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TexasStooge
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#1321 Postby TexasStooge » Sat Apr 22, 2006 12:24 pm
Code: Select all
MESOSCALE DISCUSSION 0615
NWS STORM PREDICTION CENTER NORMAN OK
1120 AM CDT SAT APR 22 2006
AREAS AFFECTED...PARTS OF NRN FL/NRN FL PEN
CONCERNING...SEVERE THUNDERSTORM POTENTIAL
VALID 221620Z - 221745Z
SEVERE POTENTIAL SEEMS LIKELY TO INCREASE ACROSS PARTS OF
NORTHEASTERN FLORIDA EARLY THIS AFTERNOON. WW IS NOT CURRENTLY
ANTICIPATED...DUE PRIMARILY TO RELATIVELY SHORT TIME DURATION AND
SOMEWHAT LIMITED AREAL COVERAGE/MAGNITUDE OF EXPECTED THREAT.
SOUTHERN BRANCH SHORT WAVE TROUGH HAS CONTRIBUTED TO MAINTENANCE OF
SMALL CONVECTIVE CLUSTER ACROSS AND EAST OF THE FLORIDA BIG BEND
REGION. STRONGEST UPDRAFTS ARE ALREADY FAIRLY VIGOROUS...AND SEEM
LIKELY TO INTENSIFY FURTHER NEXT FEW HOURS AS ELIMINATION OF NEAR
SURFACE RADIATIONAL INVERSION ALLOWS DEVELOPMENT OUT OF BOUNDARY
LAYER WITH CAPE OF 1500 TO 2000 J/KG. EMBEDDED WITHIN MODERATELY
SHEARED ENVIRONMENT BENEATH 30 TO 40 KT CYCLONIC WESTERLY MID-LEVEL
FLOW...DEVELOPING STORMS MAY POSE RISK OF MARGINALLY SEVERE HAIL AS
THEY APPROACH GAINESVILLE BY 18Z. ASSOCIATED SURFACE COLD POOL
SHOULD STRENGTHEN AS WELL...AND MAY BE ACCOMPANIED BY WINDS WHICH
COULD BRIEFLY APPROACH SEVERE LIMITS ALONG GUST FRONT AS IT SPREADS
EAST OF GAINESVILLE INTO COASTAL AREAS SOUTH OF JACKSONVILLE THROUGH
DAYTONA BEACH BY 20Z.
..KERR.. 04/22/2006
ATTN...WFO...MLB...TBW...JAX...TAE...
30248282 30348217 30158153 29688124 28928109 28918181
29208249 29438305 29858278
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TexasStooge
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#1322 Postby TexasStooge » Sat Apr 22, 2006 12:25 pm
Code: Select all
MESOSCALE DISCUSSION 0616
NWS STORM PREDICTION CENTER NORMAN OK
1207 PM CDT SAT APR 22 2006
AREAS AFFECTED...CNTRL AND ERN NC...PARTS OF ERN SC AND SE VA
CONCERNING...SEVERE THUNDERSTORM WATCH 237...
VALID 221707Z - 221830Z
CONTINUE WW 237. ADDITIONAL WW IS NOT CURRENTLY ANTICIPATED... BUT
CONVECTIVE TRENDS NEAR AND TO THE LEE OF THE SOUTHERN
APPALACHIANS...ACROSS PARTS OF NORTHEASTERN GEORGIA/SOUTH
CAROLINA...ARE BEING MONITORED.
MOST SIGNIFICANT IMPULSE EMBEDDED WITHIN BROADER SCALE SOUTHERN
BRANCH TROUGH APPEARS TO BE JUST NOW SHIFTING EAST OF THE SOUTHERN
APPALACHIANS. HOWEVER...SEVERAL WEAKER IMPULSES HAVE ALREADY
PROGRESSED THROUGH CYCLONIC FLOW EXTENDING DOWNSTREAM...THROUGH THE
SOUTHERN AND MID ATLANTIC COAST STATES. THIS INCLUDES ONE WAVE/WIND
SHIFT WHICH HAS BECOME FOCUS FOR NARROW INTENSIFYING LINE OF
CONVECTION FROM MYRTLE BEACH THROUGH RALEIGH INTO SOUTH CENTRAL
VIRGINIA. WEAK TO MODERATE INSTABILITY AHEAD OF THIS ACTIVITY WILL
SUPPORT A CONTINUING HAIL THREAT IN STRONGER STORMS. AND...30 TO 40
KT MEAN FLOW WILL CONTRIBUTE TO MODERATE NORTHEASTERLY STORM MOTIONS
AND ENHANCED RISK OF STRONG GUSTY SURFACE WINDS ACROSS EASTERN NORTH
CAROLINA/SOUTHEAST VIRGINIA THROUGH 21-22Z.
SCATTERED THUNDERSTORMS ARE BEGINNING TO INCREASE IN NUMBER
UPSTREAM...BUT LACK OF STRONGER LOW-LEVEL FOCUS AND DESTABILIZATION
IN WAKE OF DOWNSTREAM CONVECTION SEEMS LIKELY TO LIMIT SEVERE
POTENTIAL.
..KERR.. 04/22/2006
ATTN...WFO...AKQ...MHX...RAH...ILM...RNK...CHS...CAE...GSP...JAX...FFC...TAE...
32787933 32438061 31968164 31528347 32178394 34008375
35198271 35458051 36597861 36847816 37427728 37437691
36117605 35467602 34257669 33417774 33227820 33137844
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TexasStooge
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#1323 Postby TexasStooge » Sat Apr 22, 2006 4:13 pm
Code: Select all
MESOSCALE DISCUSSION 0617
NWS STORM PREDICTION CENTER NORMAN OK
0219 PM CDT SAT APR 22 2006
AREAS AFFECTED...LWR MI...NW OH...NRN AND CNTRL IND
CONCERNING...SEVERE THUNDERSTORM POTENTIAL
VALID 221919Z - 222115Z
A WW IS NOT ANTICIPATED IN THE NEAR TERM...BUT COULD BECOME
NECESSARY LATER THIS AFTERNOON. TRENDS ARE BEING MONITORED.
AREA OF STRONGER MID-LEVEL FORCING/COOLING IS CURRENTLY
OVERSPREADING LOWER MICHIGAN ASSOCIATED WITH IMPULSE PIVOTING AROUND
SOUTHEASTERN QUADRANT OF CLOSED UPPER LOW. THIS IS CONTRIBUTING TO
WEAK DESTABILIZATION...AND ONGOING DEEPENING CONVECTIVE DEVELOPMENT
TO THE NORTHEAST/EAST OF MUSKEGON. MIXED LAYER CAPE IS STILL ONLY
ON THE ORDER OF 500 J/KG...BUT WITH FURTHER HEATING IN MODERATELY
SHEARED ENVIRONMENT...POTENTIAL FOR HAIL APPROACHING OR BRIEFLY
EXCEEDING SEVERE LIMITS SHOULD INCREASE. MOST VIGOROUS THUNDERSTORM
ACTIVITY APPEARS LIKELY TO DEVELOP SOUTHEASTWARD TOWARD THE DETROIT
AREA THROUGH 21-22Z.
THEREAFTER...MODELS SEEM TO SUGGEST STRONGER MID-LEVEL FORCING WILL
BECOME REORIENTED FROM SOUTHERN MICHIGAN SOUTHWESTWARD THROUGH PARTS
OF NORTHERN/CENTRAL INDIANA...AS A 70 KT 500 MB JET STREAK NOSES
AROUND SOUTHWESTERN PERIPHERY OF CLOSED LOW. PRE-FRONTAL THERMAL
RIDGE AXIS ACROSS THIS REGION WILL BECOME FOCUS FOR STRONGEST
DESTABILIZATION...IN KINEMATIC ENVIRONMENT SUPPORTIVE OF UPDRAFT
ROTATION. ISOLATED LOW TOPPED SUPERCELLS APPEARS POSSIBLE...WITH
LARGE HAIL/DAMAGING WIND GUSTS PRIMARY THREATS.
..KERR.. 04/22/2006
ATTN...WFO...CLE...ILN...DTX...APX...IWX...GRR...IND...
43788588 44388579 44628499 44198345 43148267 42108261
40618382 39228594 39538720 40338716 41648574
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TexasStooge
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#1324 Postby TexasStooge » Sat Apr 22, 2006 4:14 pm
Code: Select all
MESOSCALE DISCUSSION 0618
NWS STORM PREDICTION CENTER NORMAN OK
0252 PM CDT SAT APR 22 2006
AREAS AFFECTED...EASTERN NM INTO WEST/SOUTHWEST TX
CONCERNING...SEVERE THUNDERSTORM POTENTIAL
VALID 221952Z - 222145Z
LARGE HAIL/DAMAGING WIND POTENTIAL IS EXPECTED TO INCREASE REMAINDER
OF THE AFTERNOON/EARLY EVENING ACROSS EASTERN NM INTO WEST TX.
MONITORING FOR A POSSIBLE SEVERE THUNDERSTORM WATCH...POSSIBLY BY
21Z-22Z.
VISIBLE SATELLITE IMAGERY FEATURES TOWERING CU DEVELOPING IN
VICINITY NM/SOUTHWEST TX MOUNTAINS AT MID AFTERNOON...NAMELY NEAR
ROSWELL/ARTESIA NM. EVEN IN PRESENCE OF AFTERNOON BOUNDARY LAYER
MIXING...50S/LOWER 60S F SURFACE DEWPOINTS HAVE BEEN MAINTAINED
ACROSS WEST TX INTO FAR SOUTHEAST NM WITHIN LOW LEVEL SOUTHEASTERLY
UPSLOPE FLOW. CONVECTIVE INHIBITION WILL CONTINUE TO ERODE OVER THE
NEXT SEVERAL HOURS ACROSS THE EASTERN NM/WEST TX PLAINS...WITH
INCREASING THUNDERSTORM COVERAGE/SEVERE POTENTIAL SPREADING EASTWARD
EARLY THIS EVENING. LATEST RUC SOUNDINGS SUGGEST POTENTIAL FOR
1500-2000 J/KG MLCAPE.
TRENDS FROM THE TUCUMCARI/WHITE SANDS NM PROFILERS SUGGEST A
DEEPENING/LOWERING OF RELATIVELY STRONGER MID LEVEL FLOW OVER THE
PAST SEVERAL HOURS...WITH 35-40 KTS SOUTHWESTERLY WINDS COMMON IN
THE MID LEVELS. COUPLED WITH THE DEGREE OF INSTABILITY/LOW LEVEL
SOUTHEASTERLY TRAJECTORIES...IT APPEARS THAT SUFFICIENT VERTICAL
SHEAR WILL BE SUPERIMPOSED ACROSS THE AMBIENT WARM SECTOR FOR
SUPERCELLS AND/OR WELL ORGANIZED MULTICELL CLUSTERS. ACTIVITY IS
LIKELY TO DEVELOP/EVOLVE INTO WEST/NORTHWEST TX THIS EVENING WITH A
CONTINUED LARGE HAIL THREAT...WITH DAMAGING WIND POTENTIAL POSSIBLY
INCREASING AS STORMS GROW UPSCALE. IT APPEARS A SEVERE TSTM WATCH
MAY BE NEEDED BY THE 21Z-22Z TIMEFRAME.
..GUYER.. 04/22/2006
ATTN...WFO...LUB...AMA...MAF...ABQ...EPZ...
31520490 32570493 34550442 35810361 35850175 34910117
32710205 31000258 30970385
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TexasStooge
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#1325 Postby TexasStooge » Sat Apr 22, 2006 4:14 pm
Code: Select all
MESOSCALE DISCUSSION 0619
NWS STORM PREDICTION CENTER NORMAN OK
0318 PM CDT SAT APR 22 2006
AREAS AFFECTED...MO OZARKS
CONCERNING...SEVERE THUNDERSTORM POTENTIAL
VALID 222018Z - 222215Z
VIGOROUS CONVECTIVE DEVELOPMENT IS POSSIBLE BEFORE DARK.
HOWEVER...IT SEEMS LIKELY THAT ANY SEVERE THREAT WILL BE FAIRLY
LOCALIZED...AND A WW IS NOT CURRENTLY ANTICIPATED.
AHEAD OF DEVELOPING COLD FRONT...ASSOCIATED WITH IMPULSE ROTATING
AROUND SOUTHWESTERN PERIPHERY OF UPPER MISSISSIPPI VALLEY CLOSED
LOW...LOW/MID-LEVEL WARM ADVECTION IS BECOMING MAXIMIZED NEAR THE
MISSOURI OZARKS. THIS IS OCCURRING ON EASTERN FRINGE OF CAPPING
LOW/MID-LEVEL PLAINS THERMAL RIDGE...WHERE MID-LEVEL LAPSE RATES ARE
STEEP...AND CONTRIBUTING TO POTENTIAL INSTABILITY. LATEST OBJECTIVE
ANALYSIS SUGGEST MIXED LAYER CAPE MAY INCREASE INTO THE 500 TO 1000
J/KG RANGE BY LATE AFTERNOON.
MID-LEVEL SUBSIDENCE HAS SUPPRESSED CONVECTIVE DEVELOPMENT TO THIS
POINT...BUT MODELS SUGGEST THIS WILL WEAKEN/SHIFT OFF TO THE EAST
LATER THIS AFTERNOON AND EVENING. DEEPENING BOUNDARY LAYER BASED
CUMULUS FIELD IS ALREADY EVIDENT ALONG THE MISSOURI/KANSAS BORDER TO
THE NORTHEAST OF CHANUTE. IT APPEARS POSSIBLE THIS THAT ACTIVITY
COULD CONTINUE TO DEVELOP INTO ISOLATED THUNDERSTORM ACTIVITY BEFORE
23/00Z. FRONTAL FORCING WILL ENHANCE LIFT FROM SOUTH CENTRAL
MISSOURI THROUGH NORTH CENTRAL KANSAS...BUT CAP SEEMS LIKELY TO HOLD
TO THE WEST OF THE MISSOURI/KANSAS BORDER.
IF STORMS DEVELOP...SHEAR BENEATH 50+ KT NORTHWESTERLY MID-LEVEL
FLOW WILL BE SUFFICIENT FOR SUPERCELLS...WITH ENHANCED RISK OF LARGE
HAIL/DAMAGING WIND GUSTS.
..KERR.. 04/22/2006
ATTN...WFO...LSX...SGF...EAX...
38419443 38679357 38559250 38469162 37899122 37399193
37369340 37799444
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TexasStooge
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#1326 Postby TexasStooge » Sat Apr 22, 2006 5:42 pm
Code: Select all
MESOSCALE DISCUSSION 0620
NWS STORM PREDICTION CENTER NORMAN OK
0458 PM CDT SAT APR 22 2006
AREAS AFFECTED...SERN VA...ERN NC/SC....ERN GA
CONCERNING...SEVERE THUNDERSTORM POTENTIAL
VALID 222158Z - 230000Z
...NO ADDITIONAL WATCHES ARE CURRENTLY PLANNED FOR THE AREA...
SEVERAL LINES/CLUSTERS OF STRONG STORMS SHOULD CONTINUE TO POSE A
MARGINAL HAIL/WIND THREAT ACROSS PORTIONS OF EXTREME SERN VA...ERN
NC AND SC...AND ERN GA FOR A COUPLE MORE HOURS. HOWEVER...LATEST
DIAGNOSTIC DATA SUGGESTS MOIST/MARGINAL LAPSE RATES ACROSS THE
REGION AFTER SEVERAL HOURS OF DEEP CONVECTION. WHILE A FEW POCKETS
OF STRONGER INSTABILITY AND MODEST DEEP-LAYER FLOW PERSIST...
DIMINISHING DIURNAL AND LARGE SCALE FORCING SHOULD RESULT IN A
GRADUAL DECLINE IN STORM ORGANIZATION/INTENSITY. A FEW WEAKLY
ORGANIZED MULTICELLULAR CLUSTERS REMAIN ONGOING WITH ATTENDANT
THREAT OF SMALL HAIL...AND PERHAPS ONE OR TWO STRONG TO DAMAGING
WIND GUSTS...BUT A NEW SEVERE TSTM WATCH DOES NOT APPEAR LIKELY AT
THIS TIME.
..CARBIN.. 04/22/2006
ATTN...WFO...MHX...RAH...ILM...CHS...CAE...JAX...FFC...
32128084 31558289 33638080 34628004 35957914 36157822
36017727 35697697 34927671 33897796 33467905 32518033
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TexasStooge
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#1327 Postby TexasStooge » Sun Apr 23, 2006 10:11 am
Code: Select all
MESOSCALE DISCUSSION 0621
NWS STORM PREDICTION CENTER NORMAN OK
0623 PM CDT SAT APR 22 2006
AREAS AFFECTED...EASTERN NM/WEST TX
CONCERNING...SEVERE THUNDERSTORM WATCH 238...
VALID 222323Z - 230130Z
SEVERE THUNDERSTORM WATCH 238 CONTINUES UNTIL 03Z ACROSS FAR
SOUTHEAST NM/SOUTHWEST TX. MONITORING FOR AN ADDITIONAL WATCH
ISSUANCE TO THE NORTH/NORTHEAST OF WW 238 INTO WEST/NORTHWEST TX.
AS OF 2315Z...SCATTERED STRONG STORMS ARE ONGOING ACROSS EAST
CENTRAL/SOUTHEAST NM -- NAMELY ALONG HIGHWAY 285 CORRIDOR FROM
SOUTHWEST OF TUCUMCARI TO NEAR ROSWELL/LOVINGTON -- INTO THE PECOS
VALLEY/BIG BEND AREA OF SOUTHWEST TX. STORMS ARE LIKELY TO CONTINUE
TO DEVELOP NORTHEASTWARD INTO FAR WEST/NORTHWEST TX THROUGH MID
EVENING. LOW LEVEL MOISTURE INFLUX VIA SOUTHEASTERLY LOW LEVEL WINDS
IS TENDING TO OFFSET VERTICAL MIXING...WITH PERSISTENCE OF
LOWER/MIDDLE 50S F DEWPOINTS AS FAR NORTH AS THE LUBBOCK AREA PER
THE WEST TX MESONET.
LATEST TUCUMCARI PROFILER DATA SUPPORTS EFFECTIVE SHEAR OF 35-40
KTS...FAVORABLE FOR WELL ORGANIZED CLUSTERS/EMBEDDED SUPERCELLS.
WHILE LARGE HAIL WILL LIKELY BE THE PRIMARY HAZARD...ONE OR MORE MCS
CLUSTERS MAY EVOLVE INTO FAR WEST/NORTHWEST TX...WITH COLD POOL
GENERATION/INCREASING SOUTHERLY LOW LEVEL JET POSSIBLY SUPPORTING
SOME DAMAGING WIND THREAT AS WELL.
..GUYER.. 04/22/2006
ATTN...WFO...LUB...AMA...MAF...ABQ...
33780452 35370380 35580247 34880162 33490139 30940263
30580415 32180452
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TexasStooge
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#1328 Postby TexasStooge » Sun Apr 23, 2006 10:12 am
Code: Select all
MESOSCALE DISCUSSION 0622
NWS STORM PREDICTION CENTER NORMAN OK
0944 PM CDT SAT APR 22 2006
AREAS AFFECTED...NERN KS....WRN/CNTRL MO...
CONCERNING...SEVERE THUNDERSTORM POTENTIAL
VALID 230244Z - 230445Z
THUNDERSTORMS ARE EXPECTED TO BECOME MORE NUMEROUS OVERNIGHT FROM
NERN KS ACROSS WRN...CNTRL...AND ERN MO. A FEW OF THE STRONGER CELLS
WILL LIKELY PRODUCE HAIL.
STRENGTHENING ISENTROPIC ASCENT AND MOISTURE FLUX ACROSS NEARLY
STATIONARY FRONTAL ZONE SITUATED FROM ECNTRL KS TO SCNTRL MO WERE
LIKELY AIDING STORM INITIATION FROM TOP/MKC AREA TO SERN MO LATE
THIS EVENING. PLUME OF STEEP MID LEVEL LAPSE RATES...COUPLED WITH
STRONG THETA-E ADVECTION AROUND 850 MB...WERE CONTRIBUTING TO MUCAPE
AROUND 1000 J/KG FOR UPDRAFTS ROOTED BETWEEN 850MB AND 700MB. GIVEN
NOCTURNAL INCREASE IN LOW LEVEL MASS INFLOW ACROSS THE FRONTAL
BAND...WOULD EXPECT CONVECTION TO CONTINUE TO DEVELOP ALONG THE EDGE
OF THE PLAINS CAPPING INVERSION FOR THE NEXT FEW HOURS. VERY STRONG
EFFECTIVE SHEAR OF 50-70KT WILL PROMOTE STORM ROTATION WITH A FEW
STORMS POSSIBLY EXHIBITING SUPERCELL CHARACTERISTICS. PRIMARY THREAT
FROM THIS ACTIVITY WILL REMAIN HAIL. GREATER SEVERE STORM COVERAGE
MAY BE INHIBITED BY LACK OF MORE WELL-DEFINED LARGE SCALE INFLUENCE
ON ASCENT AS WELL AS SOMEWHAT LIMITED EXTENT OF MOIST AXIS FEEDING
INTO THE ZONE OF STRONG FORCING.
..CARBIN.. 04/23/2006
ATTN...WFO...LSX...SGF...EAX...TOP...ICT...
37929497 38249656 39279768 39629727 39629524 39379418
39069313 38349063 38099037 37889046 37649072 37589117
37609140 37629180 37629251 37789364 37819438
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TexasStooge
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#1329 Postby TexasStooge » Sun Apr 23, 2006 10:12 am
Code: Select all
MESOSCALE DISCUSSION 0623
NWS STORM PREDICTION CENTER NORMAN OK
0948 PM CDT SAT APR 22 2006
AREAS AFFECTED...NERN KS....WRN/CNTRL MO...
CONCERNING...SEVERE THUNDERSTORM POTENTIAL
VALID 230248Z - 230445Z
THUNDERSTORMS ARE EXPECTED TO BECOME MORE NUMEROUS OVERNIGHT FROM
NERN KS ACROSS WRN...CNTRL...AND ERN MO. A FEW OF THE STRONGER CELLS
WILL LIKELY PRODUCE HAIL.
STRENGTHENING ISENTROPIC ASCENT AND MOISTURE FLUX ACROSS NEARLY
STATIONARY FRONTAL ZONE SITUATED FROM ECNTRL KS TO SCNTRL MO WERE
LIKELY AIDING STORM INITIATION FROM TOP/MKC AREA TO SERN MO LATE
THIS EVENING. PLUME OF STEEP MID LEVEL LAPSE RATES...COUPLED WITH
STRONG THETA-E ADVECTION AROUND 850 MB...WERE CONTRIBUTING TO MUCAPE
AROUND 1000 J/KG FOR UPDRAFTS ROOTED BETWEEN 850MB AND 700MB. GIVEN
NOCTURNAL INCREASE IN LOW LEVEL MASS INFLOW ACROSS THE FRONTAL
BAND...WOULD EXPECT CONVECTION TO CONTINUE TO DEVELOP ALONG THE EDGE
OF THE PLAINS CAPPING INVERSION FOR THE NEXT FEW HOURS. VERY STRONG
EFFECTIVE SHEAR OF 50-70KT WILL PROMOTE STORM ROTATION WITH A FEW
STORMS POSSIBLY EXHIBITING SUPERCELL CHARACTERISTICS. PRIMARY THREAT
FROM THIS ACTIVITY WILL REMAIN HAIL. GREATER SEVERE STORM COVERAGE
MAY BE INHIBITED BY LACK OF MORE WELL-DEFINED LARGE SCALE INFLUENCE
ON ASCENT AS WELL AS SOMEWHAT LIMITED EXTENT OF MOIST AXIS FEEDING
INTO THE ZONE OF STRONG FORCING.
..CARBIN.. 04/23/2006
ATTN...WFO...LSX...SGF...EAX...TOP...ICT...
37929497 38249656 39279768 39629727 39629524 39379418
39069313 38349063 38099037 37889046 37649072 37589117
37609140 37629180 37629251 37789364 37819438
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TexasStooge
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#1330 Postby TexasStooge » Sun Apr 23, 2006 10:13 am
Code: Select all
MESOSCALE DISCUSSION 0624
NWS STORM PREDICTION CENTER NORMAN OK
0950 PM CDT SAT APR 22 2006
AREAS AFFECTED...NERN KS....WRN/CNTRL MO...
CONCERNING...SEVERE THUNDERSTORM POTENTIAL
VALID 230250Z - 230445Z
THUNDERSTORMS ARE EXPECTED TO BECOME MORE NUMEROUS OVERNIGHT FROM
NERN KS ACROSS WRN...CNTRL...AND ERN MO. A FEW OF THE STRONGER CELLS
WILL LIKELY PRODUCE HAIL.
STRENGTHENING ISENTROPIC ASCENT AND MOISTURE FLUX ACROSS NEARLY
STATIONARY FRONTAL ZONE SITUATED FROM ECNTRL KS TO SCNTRL MO WERE
LIKELY AIDING STORM INITIATION FROM TOP/MKC AREA TO SERN MO LATE
THIS EVENING. PLUME OF STEEP MID LEVEL LAPSE RATES...COUPLED WITH
STRONG THETA-E ADVECTION AROUND 850 MB...WERE CONTRIBUTING TO MUCAPE
AROUND 1000 J/KG FOR UPDRAFTS ROOTED BETWEEN 850MB AND 700MB. GIVEN
NOCTURNAL INCREASE IN LOW LEVEL MASS INFLOW ACROSS THE FRONTAL
BAND...WOULD EXPECT CONVECTION TO CONTINUE TO DEVELOP ALONG THE EDGE
OF THE PLAINS CAPPING INVERSION FOR THE NEXT FEW HOURS. VERY STRONG
EFFECTIVE SHEAR OF 50-70KT WILL PROMOTE STORM ROTATION WITH A FEW
STORMS POSSIBLY EXHIBITING SUPERCELL CHARACTERISTICS. PRIMARY THREAT
FROM THIS ACTIVITY WILL REMAIN HAIL. GREATER SEVERE STORM COVERAGE
MAY BE INHIBITED BY LACK OF MORE WELL-DEFINED LARGE SCALE INFLUENCE
ON ASCENT AS WELL AS SOMEWHAT LIMITED EXTENT OF MOIST AXIS FEEDING
INTO THE ZONE OF STRONG FORCING.
..CARBIN.. 04/23/2006
ATTN...WFO...LSX...SGF...EAX...TOP...ICT...
37929497 38249656 39279768 39629727 39629524 39379418
39069313 38349063 38099037 37889046 37649072 37589117
37609140 37629180 37629251 37789364 37819438
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TexasStooge
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#1331 Postby TexasStooge » Sun Apr 23, 2006 10:13 am
Code: Select all
MESOSCALE DISCUSSION 0625
NWS STORM PREDICTION CENTER NORMAN OK
0212 AM CDT SUN APR 23 2006
AREAS AFFECTED...PORTIONS W TX AND EXTREME SERN NM.
CONCERNING...SEVERE THUNDERSTORM POTENTIAL
VALID 230712Z - 230945Z
TSTMS ARE FORMING OVER PORTIONS PECOS VALLEY/PERMIAN BASIN
REGIONS...FROM ERN CULBERSON COUNTY TX ENEWD ACROSS SERN CORNER OF
NM. THIS ACTIVITY MAY INCREASE IN COVERAGE/INTENSITY AS IT MOVES
ENEWD 15-20 KT ACROSS DISCUSSION AREA. OCCASIONAL HAIL IS
POSSIBLE...HOWEVER SEVERE THREAT DOES NOT APPEAR SUFFICIENTLY
ORGANIZED ATTM TO WARRANT WW.
CONVENTIONAL SFC DATA AND W TX MESONET OBS INDICATE OUTFLOW BOUNDARY
FROM EARLIER ACTIVITY EXTENDS FROM KENT COUNTY SWWD ACROSS MARTIN
COUNTY TX...TO NEAR SERN TIP OF NM...BEFORE BECOMING DIFFUSE. AIR
MASS ON BOTH SIDES OF BOUNDARY SHOULD CONTINUE GRADUAL DIABATIC
COOLING...BENEATH 40-50 KT SSELY LLJ NOW EVIDENT IN MAF VWP AND JTN
PROFILER. SUFFICIENT MOISTURE IS EVIDENT UPSTREAM TO SUPPORT
CURRENT AND ADDITIONAL CONVECTIVE DEVELOPMENT OVER THIS
REGION...BASED ON 00Z DRT RAOB AND 850 MB ANALYSIS. ACTIVITY SHOULD
REMAIN ROOTED ABOVE SFC...WITH 8-9 DEG C/KM MIDLEVEL LAPSE RATES
SUPPORTING ELEVATED MUCAPES AROUND 1000 J/KG ABOVE WRN PORTION OF
OUTFLOW AIR MASS.
CONVECTION SHOULD CONTINUE TO BECOME MORE DISORGANIZED WITH EWD
EXTENT ACROSS SOUTH PLAINS/PERMIAN BASIN REGION. WEAK MIDLEVEL FLOW
IN 500-700 MB LAYER WILL BE A LIMITING FACTOR FOR DEEP-LAYER
SHEAR...RESULTING IN EFFECTIVE SHEARS IN 20-35 KT RANGE.
ALSO...MODIFIED RUC SOUNDINGS SUGGEST INCREASING CINH FROM MAF/LBB
LONGITUDE EWD.
..EDWARDS.. 04/23/2006
ATTN...WFO...LUB...MAF...
31300378 31500407 31920405 32230386 32650305 33000220
32790134 32330129 31430229 31120332 31150370
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TexasStooge
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#1332 Postby TexasStooge » Mon Apr 24, 2006 7:30 am
Code: Select all
MESOSCALE DISCUSSION 0626
NWS STORM PREDICTION CENTER NORMAN OK
0314 PM CDT SUN APR 23 2006
AREAS AFFECTED...WRN KS TO ERN TX PANHANDLE
CONCERNING...SEVERE THUNDERSTORM POTENTIAL
VALID 232014Z - 232215Z
...SEVERE THUNDERSTORM WATCH WILL BE REQUIRED FOR PORTIONS OF THE
HIGH PLAINS OF KS...OK/TX PANHANDLE...
BOUNDARY LAYER HAS WARMED RAPIDLY ACROSS THE CNTRL/SRN HIGH
PLAINS...ESPECIALLY POST DRYLINE WHERE LOWEST 3KM LAPSE RATES ARE
NEAR DRY ADIABATIC. IT APPEARS DRYLINE HAS MIXED AS FAR EAST AS IT
WILL GO THIS AFTERNOON...WITH AN APPARENT NWWD MOISTURE SURGE NOW
ADVECTING INTO THE ERN TX PANHANDLE AS PRESSURE FALLS FOCUS IN THE
LEE OF THE SRN CO ROCKIES. STEEP LAPSE RATE ENVIRONMENT HAS AIDED
HIGH BASED CONVECTION WITH ISOLATED LIGHTNING OVER SERN CO/SWRN
KS...WHICH IS SPREADING NEWD AT ROUGHLY 40KT. THIS SPEED WOULD
ALLOW DEEP CONVECTION/BOUNDARY LAYER MOISTURE INTERSECTION BY 21Z.
ADDITIONALLY...BOUNDARY LAYER CU IS DEVELOPING RAPIDLY ALONG DRYLINE
ACROSS THE TX PANHANDLE. IT APPEARS SIGNIFICANT THUNDERSTORM
DEVELOPMENT WILL OCCUR ACROSS THIS REGION OVER THE NEXT FEW HOURS
AND SEVERE THUNDERSTORM WATCH WILL BE ISSUED SOON.
..DARROW.. 04/23/2006
ATTN...WFO...OUN...GID...DDC...GLD...AMA...
34830182 36570138 37800086 39520128 39419944 35450020
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TexasStooge
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#1333 Postby TexasStooge » Mon Apr 24, 2006 7:30 am
Code: Select all
MESOSCALE DISCUSSION 0627
NWS STORM PREDICTION CENTER NORMAN OK
0512 PM CDT SUN APR 23 2006
AREAS AFFECTED...ERN KS...SWRN MO
CONCERNING...SEVERE THUNDERSTORM POTENTIAL
VALID 232212Z - 232345Z
ERN KS AND SWRN MO CONTINUE TO BE MONITORED FOR POTENTIALLY RAPID
SEVERE TSTM DEVELOPMENT THIS EVENING.
WARM FRONT...REINFORCED BY CONVECTIVE OUTFLOW ACROSS SWRN
MO...APPEARS IN LATEST MESOANALYSIS NORTH OF A SLN-EMP-JLN LINE.
PERSISTENT MESOSCALE FORCING NEAR THE BOUNDARY...COUPLED WITH STRONG
HEATING AND MOISTENING ACROSS THE WARM SECTOR...ARE EXPECTED TO
RESULT IN TSTM INITIATION THIS EVENING. LARGE SCALE LIFT BENEATH
UPPER RIDGE...WHILE NOT CURRENTLY SIGNIFICANT...MAY BE ENHANCED BY
APPROACH OF MID/UPPER LEVEL DISTURBANCE CRESTING THE RIDGE AXIS
ACROSS NWRN KS ATTM. NOCTURNAL INCREASE IN LOW LEVEL JET ACROSS THE
FRONT WILL ALSO INCREASE TSTM DEVELOPMENT POTENTIAL.
AIR MASS BEING TRANSPORTED INTO THE ZONE OF FORCING IS VERY UNSTABLE
AND SHOULD FUEL INTENSE UPDRAFTS. LATEST MODEL GUIDANCE APPEARS TO
SUPPORT STORM DEVELOPMENT ACROSS THE AREA IN THE 00Z-03Z TIME FRAME
WITH THE STRONGEST VERTICAL MOTION OCCURRING NORTH OF THE SURFACE
BOUNDARY. GENERALLY WEAK LOW LEVEL FLOW TOPPED BY MODEST WLY FLOW OF
40-50KT IN THE MID LEVELS WILL RESULT IN SUFFICIENT SHEAR FOR STORM
ROTATION. SHEAR NEAR THE BOUNDARY WILL LIKELY STRENGTHEN THIS
EVENING AS LOW LEVEL FLOW INCREASES AND STORM INTERACTIONS LOCALLY
REINFORCE HORIZONTAL THERMAL GRADIENTS. SEVERE HAIL AND WIND APPEAR
POSSIBLE AND A TORNADO OR TWO CANNOT BE RULED FROM ANY CELL TRACKING
NEAR THE FRONT THIS EVENING.
..CARBIN.. 04/23/2006
ATTN...WFO...SGF...EAX...TOP...ICT...
38149294 36919331 37339741 38869763 39519684 39149403
38799317
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TexasStooge
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#1334 Postby TexasStooge » Mon Apr 24, 2006 7:31 am
Code: Select all
MESOSCALE DISCUSSION 0628
NWS STORM PREDICTION CENTER NORMAN OK
0646 PM CDT SUN APR 23 2006
AREAS AFFECTED...TX SOUTH PLAINS/CAPROCK VICINITY
CONCERNING...SEVERE THUNDERSTORM POTENTIAL
VALID 232346Z - 240115Z
ALTHOUGH CONVECTIVE INITIATION REMAINS UNCERTAIN...A CONDITIONAL
THREAT FOR LARGE HAIL/DAMAGING WINDS EXISTS GIVEN THUNDERSTORM
DEVELOPMENT EARLY THIS EVENING ACROSS THE TX SOUTH PLAINS/CAPROCK
VICINITY. A WATCH IS NOT CURRENTLY ANTICIPATED.
VISIBLE SATELLITE OVER THE PAST FEW HOURS PORTRAYS MODEST CU
FIELD/FAILED ATTEMPTS AT CONVECTIVE INITIATION NEAR THE LUBBOCK
VICINITY LATE THIS AFTERNOON. WHILE MASS FIELDS ARE BETTER FOCUSED
TO THE NORTH/EAST OF THE REGION...SUFFICIENT HEATING/MIXING IN
VICINITY OF THE DRYLINE HAS LARGELY ERODED THE CONVECTIVE INHIBITION
ACROSS THE TX SOUTH PLAINS/CAPROCK VICINITY PER ADJUSTED RUC
SOUNDINGS/18Z REESE RAOB. IN PRESENCE OF MODEST MASS
CONVERGENCE...SOME WINDOW FOR THUNDERSTORM DEVELOPMENT YET REMAINS
OVER THE NEXT FEW HOURS ACROSS WEST TX. GIVEN
INITIATION...COMBINATION OF MODERATE INSTABILITY/MODEST VERTICAL
SHEAR OF 25-30 KTS WOULD SUPPORT AT LEAST A SHORT-LIVED SEVERE
THREAT...WITH LARGE HAIL/DAMAGING WIND POTENTIAL. EVEN PROVIDED
CONVECTIVE INITIATION...CURRENT EXPECTATIONS ARE THAT DEVELOPMENT
WOULD REMAIN SUFFICIENTLY ISOLATED TO PRECLUDE A WATCH ISSUANCE.
..GUYER.. 04/23/2006
ATTN...WFO...LUB...MAF...
34260284 34560161 34280043 32610079 32850264
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TexasStooge
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#1335 Postby TexasStooge » Mon Apr 24, 2006 7:31 am
Code: Select all
MESOSCALE DISCUSSION 0629
NWS STORM PREDICTION CENTER NORMAN OK
0709 PM CDT SUN APR 23 2006
AREAS AFFECTED...NERN CO
CONCERNING...SEVERE THUNDERSTORM POTENTIAL
VALID 240009Z - 240145Z
TSTMS WITH HAIL MAY INCREASE FROM THE FRONT RANGE ENEWD ACROSS NERN
CO THIS EVENING.
STRONG FRONTAL SURGE AND DEEPENING UPSLOPE FLOW WILL COMBINE WITH
POST FRONTAL MOISTURE AND INSTABILITY TO FUEL A FEW STRONG TO SEVERE
STORMS ACROSS THE REGION TONIGHT. INITIATION ON THE FRONT RANGE HAS
BEGUN WITH HAIL RECENTLY REPORTED IN THE DENVER AREA. GIVEN
STRENGTHENING LARGE SCALE ASCENT ASSOCIATED WITH THE APPROACH OF
FOUR CORNERS SHORT WAVE TROUGH...AND PRESENCE OF DEVELOPING LEE-SIDE
CYCLONE AND SURFACE FRONT EXTENDING EWD INTO NWRN KS...FEATURES
APPEAR IN PLACE TO SUPPORT ADDITIONAL TSTM DEVELOPMENT ACROSS THE
REGION. STRONG DIRECTIONAL AND SPEED SHEAR WITHIN THE CLOUD-BEARING
LAYER WILL FURTHER PROMOTE STORM INTENSITY WITH HAIL APPEARING TO BE
THE PRIMARY THREAT. AREA WILL CONTINUE TO BE MONITORED FOR
INCREASING STORM COVERAGE BUT A WATCH DOES NOT APPEAR IMMINENT.
..CARBIN.. 04/24/2006
ATTN...WFO...GLD...PUB...BOU...
39050316 38890428 38940503 39200523 39600527 40180497
40560425 40750370 40810322 40740290 40640268 40510233
40210214 39920209 39640204 39320203
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TexasStooge
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#1336 Postby TexasStooge » Mon Apr 24, 2006 7:31 am
Code: Select all
MESOSCALE DISCUSSION 0630
NWS STORM PREDICTION CENTER NORMAN OK
0758 PM CDT SUN APR 23 2006
AREAS AFFECTED...ERN KS...WRN MO
CONCERNING...SEVERE THUNDERSTORM WATCH 240...
VALID 240058Z - 240230Z
ISOLATED CELLS HAVE RECENTLY DEVELOPED ALONG QUASI-STATIONARY
BOUNDARY FROM NERN KS INTO WRN MO. BASED ON LATEST SOUNDING
INFORMATION FROM SGF AND TOP...MODIFIED FOR ESTIMATED ENVIRONMENTAL
CONDITIONS NEAR THE FRONT...ISOLATED TORNADO POTENTIAL MAY BE
INCREASING.
RECENT DISCRETE STORM DEVELOPMENT ON THE FRONT IN OTTAWA AND MORRIS
COUNTIES HAS OCCURRED ON THE SYNOPTIC FRONT WHERE SOUNDING AND
PROFILER DATA SUGGEST STORM RELATIVE HELICITY (SRH) MAY BE QUITE
HIGH. BASED ON PROXIMITY RAOB AND PROFILER DATA...0-1KM SRH WAS
CURRENTLY ESTIMATED AT OVER 150 M2/S2...WHILE 0-3KM SRH MAY BE AS
HIGH AS 400 M2/S2 FOR 300/12KT CELL MOTION. IN ADDITION TO
RELATIVELY LOW LFC OF AROUND 1-2KM NEAR THE BOUNDARY THIS WOULD
SUPPORT THE POTENTIAL FOR STRONG LOW LEVEL STORM ROTATION AND
PERHAPS TORNADO FORMATION FOR UPDRAFTS REMAINING NEAR THE FRONTAL
ZONE OVER THE NEXT HOUR OR SO.
..CARBIN.. 04/24/2006
ATTN...WFO...SGF...EAX...TOP...ICT...GID...
37759380 38229621 38669810 39219836 39319755 38939604
38479444 38359385 38249336 37799314
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TexasStooge
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#1337 Postby TexasStooge » Mon Apr 24, 2006 7:32 am
Code: Select all
MESOSCALE DISCUSSION 0631
NWS STORM PREDICTION CENTER NORMAN OK
0926 PM CDT SUN APR 23 2006
AREAS AFFECTED...TX/OK PNHDLS...NWRN OK...WRN KS
CONCERNING...SEVERE THUNDERSTORM WATCH 239...
VALID 240226Z - 240330Z
TSTM COVERAGE AND INTENSITY WAS DECREASING ACROSS SEVERE TSTM WATCH
239 AT THIS HOUR. DRY LINE WAS RETREATING NWWD ACROSS THE WRN
PORTIONS OF THE PNHDLS AS LEE-SIDE LOW GRADUALLY STRENGTHENS OVER
SERN CO. LATEST RUC AND SREF GUIDANCE INDICATED THE THREAT FOR
ORGANIZED SEVERE STORMS WITHIN WATCH 239 REGION SHOULD REMAIN LOW
FOR THE REMAINDER OF THE NIGHT AND NO ADDITIONAL WATCHES ARE
ANTICIPATED IN THIS AREA.
..CARBIN.. 04/24/2006
ATTN...WFO...SGF...EAX...TOP...ICT...GID...
37759380 38229621 38669810 39219836 39319755 38939604
38479444 38359385 38249336 37799314
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TexasStooge
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#1338 Postby TexasStooge » Mon Apr 24, 2006 7:32 am
Code: Select all
MESOSCALE DISCUSSION 0632
NWS STORM PREDICTION CENTER NORMAN OK
0947 PM CDT SUN APR 23 2006
AREAS AFFECTED...ERN KS...WRN MO
CONCERNING...SEVERE THUNDERSTORM WATCH 240...
VALID 240247Z - 240415Z
...LARGE AND POTENTIALLY DANGEROUS MCS HAS EVOLVED ACROSS SERN KS...
EXPECT LINEAR MCS WITH MESOCYCLONIC COMMA-HEAD COMPLEX TO CONTINUE
MOVING EAST AT UP TO 50KT ACROSS SERN KS OVER THE NEXT COUPLE OF
HOURS. STRONG TO DAMAGING WIND GUSTS AND VERY LARGE HAIL SHOULD
ACCOMPANY THIS SYSTEM ACROSS LYON...COFFEY...GREENWOOD...AND WOODSON
COUNTIES OVER THE NEXT HOUR AND A HALF. ACTIVITY MAY THEN MERGE WITH
OTHER INTENSE STORMS FORMING NEAR STATIONARY WARM FRONT FROM ALLEN
AND ANDERSON COUNTIES IN EXTREME SERN KS...TO VERNON...ST.
CLAIR...CEDAR...AND HICKORY COUNTIES IN WRN MO.
ANOTHER INTENSE RIGHT-MOVING SUPERCELL STORM WAS CROSSING THE
LAWRENCE KS AREA. IN ADDITION TO TORNADO POTENTIAL AND DAMAGING
WINDS FROM THIS CELL... VERY LARGE AND DAMAGING HAIL WILL ALSO BE
POSSIBLE.
..CARBIN.. 04/24/2006
ATTN...WFO...SGF...EAX...TOP...ICT...GID...
37759380 38229621 38669810 39219836 39319755 38939604
38479444 38359385 38249336 37799314
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TexasStooge
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#1339 Postby TexasStooge » Mon Apr 24, 2006 7:33 am
Code: Select all
MESOSCALE DISCUSSION 0633
NWS STORM PREDICTION CENTER NORMAN OK
1010 PM CDT SUN APR 23 2006
AREAS AFFECTED...NERN CO...WRN NEB...NWRN KS
CONCERNING...SEVERE THUNDERSTORM POTENTIAL
VALID 240310Z - 240445Z
THREAT FOR ELEVATED SUPERCELLS WITH LARGE HAIL APPEARS TO BE
INCREASING ACROSS NERN CO THIS EVENING. DYNAMICS AND INSTABILITY
SHOULD SUPPORT THE EVOLUTION OF A SMALL MCS ACROSS THE NWRN KS/SWRN
NEB BORDER AREA OVER THE NEXT FEW HOURS. A WATCH WILL BE ISSUED
SHORTLY.
..CARBIN.. 04/24/2006
ATTN...WFO...GID...LBF...GLD...BOU...
39100023 39670288 41040228 40469964
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TexasStooge
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#1340 Postby TexasStooge » Mon Apr 24, 2006 7:33 am
Code: Select all
MESOSCALE DISCUSSION 0634
NWS STORM PREDICTION CENTER NORMAN OK
0127 AM CDT MON APR 24 2006
AREAS AFFECTED...PORTIONS S-CENTRAL/SERN KS...N-CENTRAL-NERN OK.
CONCERNING...SEVERE THUNDERSTORM POTENTIAL
VALID 240627Z - 240830Z
TSTMS MAY CONTINUE TO INCREASE IN COVERAGE ON BOTH SIDES OF KS/OK
BORDER...N OF OUTFLOW BOUNDARY LEFT BEHIND BY MCS THAT NOW IS
DECAYING OVER SRN MO. MAIN THREAT SHOULD BE LARGE HAIL. GUST
POTENTIAL BECOMES LARGER WITH SWD EXTENT THROUGH DISCUSSION
AREA...AND PROXIMITY TO OUTFLOW BOUNDARY. 61 KT GUST WAS MEASURED
IN WOODWARD COUNTY OK AT 540Z.
6Z SFC ANALYSIS INDICATES OUTFLOW BOUNDARY FROM SERN DELAWARE COUNTY
OK SWWD TO LINCOLN COUNTY...THEN NWWD ACROSS LOGAN/GARFIELD COUNTIES
TO VICINITY NRN MAJOR/EXTREME SERN WOODS COUNTY. BOUNDARY WILL
CONTINUE TO MOVE SEWD ACROSS NERN OK THROUGH AT LEAST 8Z.
HOWEVER...IT SHOULD STALL SOON FROM LINCOLN COUNTY NWWD TO NEAR
END...AND ALREADY HAS BECOME NEARLY STATIONARY FARTHER W. BAND OF
TSTMS IS BECOMING BETTER ORGANIZED FROM PORTIONS PRATT COUNTY KS SWD
TO WRN MAJOR COUNTY OK AND SHOULD CONTINUE MOVING EWD ALONG BOTH
SIDES KS/OK BORDER. ANOTHER BAND OF CONVECTION IS EVIDENT FROM
STAFFORD COUNTY KS SEWD TO KAY COUNTY OK...IN ZONE OF 850 MB WIND
SHIFT AND APPARENT ISENTROPIC ASCENT MAX.
MOST ACTIVITY SHOULD REMAIN ALONG AND N OF OUTFLOW BOUNDARY...IN
REGIME OF ELEVATED LOW LEVEL WAA AIDED BY 40-50 KT LLJ EVIDENT IN
VWP DATA. MODIFIED RUC SOUNDINGS INDICATE MIDLEVEL LAPSE RATES
APCHG 9 DEG C/KM...ALONG WITH 850 MB DEW POINTS 13.5-15 DEG
C...SUPPORTING ELEVATED MUCAPES 2000-3000 J/KG ROOTED AT TOP OF
OUTFLOW AIR...WHICH DEEPENS WITH NWD EXTENT. 30-40 KT EFFECTIVE
SHEAR PROFILES SHOULD AID IN STORM ORGANIZATION...MAINLY
MULTICELLULAR IN CHARACTER. STRONG CINH EVIDENT S OF OUTFLOW AIR
MASS SHOULD PRECLUDE SIGNIFICANT SWD PROPAGATION/BACKBUILDING OF
THIS ACTIVITY.
..EDWARDS.. 04/24/2006
ATTN...WFO...SGF...TSA...TOP...ICT...OUN...DDC...
36119939 36709876 37319883 38249896 38399866 38339652
38069545 37599495 36769520 36259635 36199874
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