Tornado outbreak Saturday - Central states

[Bunkertor]

Is there a better radar /satelite available except http://www.nws.noaa.gov/ ?

[CrazyC83]

50 knots of shear on that Nebraska TVS. Could easily be putting down a solid tornado.

[CrazyC83]

Is there a better radar /satelite available except http://www.nws.noaa.gov/ ?

http://www.wunderground.com - Click on NEXRAD at the top...

[Bunkertor]

Is there a better radar /satelite available except http://www.nws.noaa.gov/ ?

http://www.wunderground.com - Click on NEXRAD at the top...

Oh, that´s fine to watch. Thanks. And good luck from good ol´germany.

Impressive listing: http://kamala.cod.edu/svr/

[CrazyC83]

MESOSCALE DISCUSSION 1977
NWS STORM PREDICTION CENTER NORMAN OK
0737 PM CDT SAT SEP 16 2006

AREAS AFFECTED...ERN NEB INTO CENTRAL KS, WRN OK, NWRN TX

CONCERNING...TORNADO WATCH 775...778...

VALID 170037Z - 170230Z

TORNADO THREAT CONTINUES MAINLY ACROSS CNTRL/NERN KS AND ERN NEB.
SEVERE THREAT CONTINUES FARTHER S INTO NWRN OK AND THE EXTREME ERN
TX PANHANDLE.

STORMS OVER KS WILL CONTINUE TO STRENGTHEN AS THEY SHIFT NEWD AS
WILL THE STORMS IN NEB. TORNADO THREAT PERSISTS GIVEN STRONG SHEAR
PROFILES IN PLACE...AND LOWERING LCLS. HOWEVER...THREAT WILL
TRANSITION TO WIND AND HAIL AS STORMS GET UNDERCUT BY COLD FRONT.
00Z OAX AND TOP SOUNDINGS SHOW RELATIVELY WEAK MID LEVEL LAPSE RATES
WITH WARM NOSE NEAR 600 MB. THIS HAS SURELY SLOWED DEVELOPMENT...BUT
CONTINUED COOLING ALOFT WITH UPPER TROUGH AND STRONG LOW LEVEL
CONVERGENCE SHOULD OVERCOME ANY CAPPING.

FARTHER S...TCU ARE CONSOLIDATING ALONG DRYLINE IN ERN TX PANHANDLE
INTO NWRN OK...WHILE WATER VAPOR IMAGERY SHOWS PERHAPS SOME ENHANCED
LIFT NOW ENTERING THE TX/OK PANHANDLES. STORMS MAY STILL DEVELOP
HERE AND MOVE ACROSS FAR NWRN/NRN OK. CU FIELD HAS DISSIPATED OVER
MUCH OF SWRN OK AND NWRN TX...WHERE DEVELOPMENT IS LESS LIKELY.
HOWEVER...FURTHER DEVELOPMENT IS LIKELY OVERNIGHT ALONG COLD FRONT
WITH A MARGINAL WIND/HAIL THREAT.

..JEWELL.. 09/17/2006


ATTN...WFO...TOP...ICT...OUN...DDC...LUB...AMA...

39069845 38919747 37979753 35789854 34559928 34480008
34630077 34810119 35150142 35470152 36540087 37800004
38949944

[CrazyC83]

Question: what is more prominent when it comes to producing severe weather, the cold front or the dryline?

[Bunkertor]

Question: what is more prominent when it comes to producing severe weather, the cold front or the dryline?

In germany the coldfront - harharhar

[CrazyC83]

WFUS53 KMPX 170104
TORMPX
MNC129-170145-
/O.NEW.KMPX.TO.W.0021.060917T0102Z-060917T0145Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
802 PM CDT SAT SEP 16 2006

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* TORNADO WARNING FOR...
RENVILLE COUNTY IN CENTRAL MINNESOTA...

* UNTIL 845 PM CDT

* AT 758 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A ROTATING WALL
CLOUD 13 MILES SOUTHWEST OF BECHYN...OR ABOUT 8 MILES WEST OF
REDWOOD FALLS. RADAR SHOWED THE SEVERE STORM ..AND MOVING
NORTHEAST AT 45 MPH.

* LOCATIONS IMPACTED INCLUDE...
BECHYN...
BIRD ISLAND...
HECTOR...
BUFFALO LAKE...

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CDT SUNDAY MORNING FOR
SOUTHERN MINNESOTA.

LAT...LON 4468 9530 4461 9516 4456 9504 4453 9492
4452 9479 4480 9482 4471 9521

$$

[WindRunner]

Tornado warning for Renville County in central MN (about halfway across the state from Minneapolis) mentions a rotating wall cloud . . . storm looks far less impressive than it did about 10 mins ago.

Central NE is getting our first squall line of the night going, very intense lightning.

EDIT: completely missed this page, and the posting above of what I just said . . .

[CrazyC83]

MESOSCALE DISCUSSION 1978
NWS STORM PREDICTION CENTER NORMAN OK
0815 PM CDT SAT SEP 16 2006

AREAS AFFECTED...WRN IA

CONCERNING...TORNADO WATCH 775...776...

VALID 170115Z - 170315Z

TORNADO POTENTIAL APPEARS TO BE INCREASING ACROSS PARTS OF
WESTERN/CENTRAL IOWA THIS EVENING. ADDITIONAL WWS MAY BE NEEDED
EAST OF WW 775 AND WW 776.

INCREASING CONVECTIVE DEVELOPMENT IS ONGOING IN TONGUE OF RETURNING
MOISTURE...AHEAD OF SURFACE COLD FRONT WHICH IS MERGING INTO DRY
LINE ACROSS EAST CENTRAL NEBRASKA...INTO CENTRAL KANSAS. THIS
APPEARS TO BE SUPPORTED BY A STRENGTHENING POSITIVE DIFFERENTIAL
VORTICITY PATTERN AHEAD OF LARGE SCALE UPPER TROUGH SHIFTING EAST OF
THE ROCKIES INTO THE NORTHERN/CENTRAL PLAINS. AS THIS FORCING
CONTINUES TO OVERSPREAD MOISTURE/INSTABILITY AXIS THIS
EVENING...FURTHER INCREASE/INTENSIFICATION OF CONVECTION IS
EXPECTED...WITH BROKEN SQUALL LINE EVOLVING.

AHEAD OF COLD FRONT...RESIDUAL CONVECTIVE BOUNDARY/CONFLUENCE ZONE
PERSISTS ALONG THE MISSOURI RIVER...WITH FLOW BACKED TO A MORE
SOUTHEASTERLY DIRECTION TO ITS EAST...ACROSS WESTERN IOWA...WHERE
DEW POINTS ARE NEAR 70F. STORMS DEVELOPING IN THIS
ENVIRONMENT...AND CROSSING BOUNDARY INTO THIS ENVIRONMENT...SEEM
LIKELY TO POSSESS AN ENHANCED RISK FOR TORNADOES NEXT FEW HOURS...AS
LOW-LEVEL HODOGRAPHS BECOME MAXIMIZED BENEATH INTENSIFYING LOW-LEVEL
JET AXIS.

..KERR.. 09/17/2006


ATTN...WFO...DMX...FSD...OAX...

42989640 43629553 43199462 42359395 41469300 40679373
40759488 42009599

[CrazyC83]

Activity shifting to Iowa:

WFUS53 KDMX 170129
TORDMX
IAC047-170215-
/O.NEW.KDMX.TO.W.0027.060917T0129Z-060917T0215Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
829 PM CDT SAT SEP 16 2006

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* TORNADO WARNING FOR...
CRAWFORD COUNTY IN WEST CENTRAL IOWA

* UNTIL 915 PM CDT

* AT 824 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED 7 MILES SOUTHWEST OF DENISON...OR 26 MILES SOUTH
OF IDA GROVE...AND MOVING NORTHEAST AT 40 MPH.

* THIS STORM WILL BE NEAR...
DENISON BY 835 PM CDT.

THE TOWNS OF ARION...DENISON AIRPORT...DELOIT...VAIL AND KIRON ARE
ALSO IN THE PATH OF THIS TORNADIC STORM.

THIS TORNADO WARNING REPLACES THE SEVERE THUNDERSTORM WARNING THAT
WAS IN EFFECT FOR THE SAME AREA. GO TO A BASEMENT OR SMALL INTERIOR
ROOM ON THE LOWEST FLOOR!

THIS IS A HAZARDOUS SITUATION. SEEK SHELTER IN A BASEMENT...OR IN AN
INTERIOR ROOM. STAY AWAY FROM WINDOWS. IF YOU ARE OUTSIDE OR IN A
CAR...SEEK SHELTER IN A REINFORCED BUILDING.

LAT...LON 4193 9557 4193 9523 4220 9510 4221 9548

$$

JUNGBLUTH

[TexasStooge]

Pretty soon, my hometown may get its fair share tomorrow while I'm at church.

[WindRunner]

This one in IA has a good hook and decent couplet, but the volume rendering indicates any possible tornado is probably still up in the cloud right now. Watch this one, as it certainly had the power to produce about 20 mins ago. Currently you can see the storm collapsing downward, with 50dBz tops falling from 40kft at 01:22Z to their current 19kft now (01:40Z). Still think this one could refire within the hour, though.

[CrazyC83]

From last night:

Following Friday night storms, Governor Dave Heineman has declared a disaster area in Butler County. The Village of Surprise was hit by a tornado, damaging several homes and businesses. None of the 44 residents were hurt. In Saunders County, several roads have been closed after heavy rain.

http://www.action3news.com/NewsArticle/ ... fault.aspx

[CrazyC83]

New severe hook about 30 miles SW of Omaha. 139 knots of shear on the TVS! No warning on it yet.

[TexasStooge]

I've already e-mailed the cousins of my family living in Minnesota telling them about the tornado outbreak. I'm sure they already got the notice via the News.

[CrazyC83]

139 knot shear = instant F3 if it touches down.

[WindRunner]

The one near Memphis, due south of KOAX? I'm only catching about 110kts with the level II data, but still impressive. Everything points to a tornado, including the volume rendering. It needs a warning now!

[CrazyC83]

The one near Memphis, due south of KOAX?

That is correct. KOAX = the radar site. The city of Omaha is about 20-30 miles to the northeast.

Yes I agree, especially at night - if there is any sign of a tornado, issue the tornado warning. These are people's lives at risk and they can't see it coming at night!

[CrazyC83]

SEL9

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 779
NWS STORM PREDICTION CENTER NORMAN OK
835 PM CDT SAT SEP 16 2006

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

SOUTHWEST...CENTRAL AND NORTHEAST IOWA
SOUTHEAST MINNESOTA

EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 835 PM
UNTIL 400 AM CDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 40 STATUTE
MILES EAST AND WEST OF A LINE FROM 25 MILES NORTHEAST OF
ROCHESTER MINNESOTA TO 70 MILES SOUTH SOUTHWEST OF DES MOINES
IOWA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED
WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9).

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.

OTHER WATCH INFORMATION...CONTINUE...WW 774...WW 775...WW
776...WW 777...WW 778...

DISCUSSION...DISCRETE STORMS NOW FORMING ALONG LOW LEVEL CONFLUENCE
AXIS AHEAD OF ERN NEB COLD FRONT EXPECTED TO INTENSIFY AND
MOVE/DEVELOP NEWD ACROSS IA THROUGH EARLY SUNDAY...IN RESPONSE TO
STRENGTHENING LLJ AND HEIGHT FALLS DOWNSTREAM FROM PROGRESSIVE UPPER
TROUGH. COMBINATION OF LOW LCLS AND STRONG LOW LEVEL
SPEED/DIRECTIONAL SHEAR SUGGEST TORNADIC POTENTIAL OF STORMS NOW IN
WRN IA MAY PERSIST AS ENTIRE PATTERN SHIFTS E/NE LATER TONIGHT.
WITH TIME...EXPECT STORMS WILL EVOLVE INTO A SQUALL LINE AS COLD
FRONT OVERTAKES CONFLUENCE AXIS. SUPERCELLS EMBEDDED IN LINE MAY
YIELD HIGH WIND AND HAIL AS THE LINE CONTINUES ENE EARLY SUNDAY.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 24040.


...CORFIDI

New watch - Des Moines --> Waterloo --> Rochester. Should be a PDS watch IMO.