Significant winter storm to unfold for Southern half of

[wxguy25]

here, this should help:

[Stormsfury]

im having a stupid moment...what are UVV's

Upward Vertical Velocites ...

heading to see Meet the Fockers ... have a good night everyone.

SF

[wxguy25]

im having a stupid moment...what are UVV's

Upward vertical velocity. positive values are imdicative of rising air on the synoptic scale leading to clouds and precip.

[wxguy25]

im having a stupid moment...what are UVV's

Upward Vertical Velocites ...

heading to see Meet the Fockers ... have a good night everyone.

SF

Let us know how it was. Enjoy

[wxguy25]

0z ETA looking like 18z thus far, however QPF is slightly less across SNE. Widespread .25-.50" vs .50-1.00".

[Anonymous]

To further add fire to the situation, TD's in Charleston have dropped 6 degrees in the past 2 hours (dewpoint now down to 23), with a current termp of 39... NNE winds at 15 MPH are PRIME for the Central Coast of South Carolina for cold air damming (which is also being someplay underprogged by current FG), which basically has me going pretty much full gong, sound the alarm that a significant winter weather event is about ready to unfold ...

Latest RUC continues to be very aggressive in the development of SN/IP/ZR just inland from the immediate coast of South Carolina, and current extrapolations lead me to believe that overnight tonight, conditions will rapidly deteoriate across the region. Sorry for the lack of updates on my website.... busy week, and over with family ATT...

SF

Ok great discussion as always SF. It's now 21:00 hrs and I just got up from a nap. Currently precip intensity is increasing based on obs in Ladson. Mostly rain at this time but some mixing with IP is certainly possible in the next few hrs. Earlier North Myrtle Beach already seeing mixed pecip 1900 hrs with TD 24. Hope that dynamic cooling at 500mb will allow for SN/IP setup rather than rain/ZR mix in the eastern sections of SC.

Will keep watching through the night.

Merry X'mas !

[Bane]

There's sleet and freezing rain falling at my house with a temp of 30.9 and the temp keeps falling.

[JenyEliza]

There's sleet and freezing rain falling at my house with a temp of 30.9 and the temp keeps falling.

Stuck at 37 at my place, and not a "precip" in sight.

[dekeoy]

33 at the airport and 34 at the beach. already below the forecasted lows with sleet/freezing rain starting about 2 hours ago. It'll be interesting to see what the morning brings.

[Anonymous]

1000 PM EST SAT DEC 25 2004

CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHARLESTON LGT RAIN 35 34 96 NE13 30.08F WCI 26

[Anonymous]

interesting statement via NWS concerning winter weather advisory:


WINTER WEATHER ADVISORY IN EFFECT UNTIL NOON EST SUNDAY...
A MIX OF FREEZING RAIN AND POSSIBLY SOME SLEET WILL AFFECT AREAS
MAINLY WEST OF HIGHWAY 17 IN SOUTHEAST SOUTH CAROLINA...AND WEST OF
INTERSTATE 95 IN SOUTHEAST GEORGIA. AREA TEMPERATURES WILL REMAIN IN
THE MIDDLE 30S MOST AREAS AWAY FROM THE IMMEDIATE COAST THROUGH
MIDNIGHT WITH NO MAJOR ICING PROBLEMS. AFTER MIDNIGHT HOWEVER...
COLDER AND DRIER AIR FROM THE NORTH MAY PUSH SOUTH INTO THE
AREA...INCREASING THE CHANCES OF SOME FREEZING RAIN AND MAYBE SOME
SLEET. BRIDGES WILL BE THE FIRST AREAS TO POSSIBLY SEE SOME ICING
CONDITIONS...WITH ROADS AND OTHER SURFACES BEING AFFECTED TOWARD
MORNING. ICE WILL BE PATCHY NEAR THE COAST...BUT WEST OF HIGHWAY 17
AND INTERSTATE 95...ACCUMULATIONS NEAR ONE TENTH OF AN INCH ARE
POSSIBLE.

TRAVELING WEST TOWARD COLUMBIA IS HIGHLY
DISCOURAGED OVERNIGHT AS SOME ROADS MAY BECOME CLOSED AND IMPASSABLE
BY EARLY SUNDAY MORNING WITH ICE ACCUMULATIONS UP TO ONE HALF INCH.
SOME REPORTS OF LIGHT SNOW AND SLEET ARE POSSIBLE ACROSS THE COASTAL
REGIONS THIS EVENING AND TONIGHT FROM CHARLESTON DOWN TO SAVANNAH.
WHILE THE ATMOSPHERE IS TOO WARM ALOFT TO SUPPORT SIGNIFICANT
SNOWFALL...PATCHES OF FREEZING RAIN AND SLEET ARE POSSIBLE ALONG
COASTAL SECTIONS LATE TONIGHT AS TEMPERATURES NEAR THE FREEZING MARK.
THE SITUATION WILL BE MONITORED CLOSELY OVER THE NEXT SEVERAL HOURS
AS THE WINTER STORM ADVISORY MAY BE EXPANDED TO INCLUDE THE COASTAL
AREAS OF SOUTHEAST SOUTH CAROLINA AND SOUTHEAST GEORGIA.

[Bane]

The dew points were still in the upper 20's at ILM. The longer they stay that cold, the better the chance the temp continues to fall.

[Anonymous]

Interesting radar out of SC - showing snow now spreading just east of Columbia in the midlands as of 23:00hrs. Interestingly about 2 hours ago, most all of this was rain. This is an indication of colder air working its way into lower and mid levels of the atmosphere in the last 2hrs.

[Mike2002]

Okay, I have read that these types of storms are really hard to forecast but does anyone have any estimate to how much the Richmond area is going to see. I live about 15 miles west of Richmond and am curious as to how my drive to work is going to be tomorrow.

[Skywatch_NC]

Okay, I have read that these types of storms are really hard to forecast but does anyone have any estimate to how much the Richmond area is going to see. I live about 15 miles west of Richmond and am curious as to how my drive to work is going to be tomorrow.

Right now the NWS is saying for Richmond:

Sunday:

Cloudy with light snow likely. Snow accumulation up to 1 inch. Highs in the lower 30s. North winds 10 to 15 mph. Chance of snow 60 percent.

[Anonymous]

ok I will go to bed now at midnight but will set my clock alarm for 2:00AM. Or if I hear any I/P or sleet - hopefully I'll wake up to hear that............

[Anonymous]

well..............looks like nothing but a soaking rain most of the night and early morning hours in the eastern Carolinas. But we needed this rain real bad after a dry fall/early December. Most of the frozen accumulating precip appears to have remained to our west for now, including Columbia/Orangeburg/Florence. Here are some additional morning obs:

Ken

700 AM EST SUN DEC 26 2004
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHARLESTON RAIN 34 34 100 N21G30 29.89F FOG WCI 22
WATERFRONT PRK N/A 36 N/A N/A N18G26 N/A WCI 25
BEAUFORT NOT AVBL
HILTON HEAD IS NOT AVBL
ORANGEBURG MIX PCPN 32 31 96 MISG 29.98S
COLUMBIA FRZ RAIN 31 28 89 N9 30.03F WCI 23
SUMTER NOT AVBL
FLORENCE MIX PCPN 32 30 92 MISG 30.01R FOG
MYRTLE BEACH RAIN 34 30 86 N17 29.94F WCI 23
N MYRTLE BEACH LGT RAIN 33 31 92 N16G22 29.93F FOG WCI 23

interestingly, some flurries were observed this morning at CHAS airport at 6:00 hrs:

CHARLESTON FLURRIES 34 34 100 N20G25 29.90F WCI 23

[Stormsfury]

im having a stupid moment...what are UVV's

Upward Vertical Velocites ...

heading to see Meet the Fockers ... have a good night everyone.

SF

Let us know how it was. Enjoy

Extremely funny movie ...

[Stormsfury]

Just a follow up to CHS actual observed weather for Sunday morning (beginning at midnight) ...

CDUS42 KCHS 270547
CLICHS

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
1239 AM EST MON DEC 27 2004

...................................

...THE CHARLESTON AIRPORT CLIMATE SUMMARY FOR DECEMBER 26 2004...

CLIMATE NORMAL PERIOD 1971 TO 2000
CLIMATE RECORD PERIOD 1860 TO 2004

WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
..................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 37 427 PM 78 1942 60 -23 58
MINIMUM 28 1018 PM 11 1983 38 -10 26
AVERAGE 33 49 -16 42

PRECIPITATION (IN)
YESTERDAY 0.62 2.04 1941 0.11 0.51 0.00
MONTH TO DATE 1.04 2.64 -1.60 1.85
SINCE DEC 1 1.04 2.64 -1.60 1.85
SINCE JAN 1 39.24 50.93 -11.69 50.98

SNOWFALL (IN)
YESTERDAY T
MONTH TO DATE T
SINCE DEC 1 T
SINCE JUL 1 T
SNOW DEPTH 0

DEGREE DAYS
HEATING
YESTERDAY 32 16 16 23
MONTH TO DATE 387 357 30 470
SINCE DEC 1 387 357 30 470
SINCE JUL 1 617 664 -47 651
..................................................................

WIND (MPH)
HIGHEST WIND SPEED 24 HIGHEST WIND DIRECTION N (10)
HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION N (10)
AVERAGE WIND SPEED 13.1

SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.7

WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HEAVY RAIN
RAIN
LIGHT RAIN
FREEZING RAIN
LIGHT SNOW
SLEET
FOG

RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 1200 AM
LOWEST 75 500 PM
AVERAGE 88
..........................................................

THE CHARLESTON AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 60 78 1971
MINIMUM TEMPERATURE (F) 38 16 1935

SUNRISE AND SUNSET
DECEMBER 27 2004......SUNRISE 722 AM EST SUNSET 521 PM EST
DECEMBER 28 2004......SUNRISE 722 AM EST SUNSET 522 PM EST

- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.

&&

DOWNTOWN CHARLESTON CLIMATE DATA:
AT THE DOWNTOWN CHARLESTON WEATHER STATION, THE HIGH YESTERDAY WAS
38 DEGREES AND THE LOW WAS 34 DEGREES. THE NORMAL HIGH FOR YESTERDAY
IS 58 AND THE NORMAL LOW IS 44. THE RECORD HIGH FOR YESTERDAY IS 74,
SET IN 1982, AND THE RECORD LOW IS 18, SET IN 1983. 0.86 INCHES OF
PRECIPITATION FELL YESTERDAY, WHICH A NEW RECORD PRECIPITATION FOR
THE DAY. THE PREVIOUS RECORD WAS 0.80 INCHES SET IN 1976. THE
MONTHLY TOTAL NOW STANDS AT 1.20 INCHES AND THE YEARLY TOTAL IS NOW
41.21 INCHES.

$$

CHS airport got the whole works, including areas around the CHS region. What likely happened overnight with the initial surge of colder air was a lowering of temperatures to the FRZ mark, but with the dry slot, and somewhat warmer 850mb, allowed the temperature to rise just ABV FRZ, and prevent a major icing event. As the wraparound emcompassed across the Lowcountry, a variety of precip continued off and on until it came to an end by 17z (Noon) ...

SF