Alert archive / South Carolina / Winter Storm Warnings in 2010
Winter Storm Warning 2, NWS Charleston, SC
NWS Charleston, SC issued this winter storm warning at Dec 25, 2010, 2:14 PM EST for 5 counties in South Carolina. It took effect at Dec 26, 2010, 3:00 AM EST. It was in force for 13 hr. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Dec 25, 2010, 2:14 PM EST (19:14 UTC)
- In effect from
- Dec 26, 2010, 3:00 AM EST
- Expired
- Dec 26, 2010, 4:04 PM EST
- In force
- 13 hr
- Issued by
- NWS Charleston, SC
Counties Allendale County, SC, Berkeley County, SC, Colleton County, SC, Dorchester County, SC, Hampton County, SC
The radar
The Charleston,SC radar (KCLX), 48 km from the middle of the area, began a volume at 19:16 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Dec 26, 6:34 AM EST | SNOW 0 | Moncks Corner, SC | RAIN TRANSITIONED TO A MIX OF SNOW AND SLEET WITH NO ACCUMULATION AT THIS TIME. |
| Dec 26, 9:03 AM EST | SLEET 0 | Sse Pimlico, SC | REPORT OF SLEET FALLING IN PIMLICO PLANTATION. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Charleston AFB, SC (KCHS), launched 12:00Z, 7.2 hours before the alert went out and 66 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1780 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 120 m²/s²
- 0-3 km storm-relative helicity
- 190 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
093 WWUS42 KCHS 251914 WSWCHS URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE CHARLESTON SC 214 PM EST SAT DEC 25 2010 .A STRENGTHENING AREA OF LOW PRESSURE WILL MOVE UP THE COAST OF THE SOUTHEAST UNITED STATES TONIGHT AND SUNDAY. RAIN IS EXPECTED TO CHANGE OVER TO SNOW ACROSS PORTIONS OF THE AREA LATE TONIGHT OR SUNDAY MORNING...WITH SOME ACCUMULATION EXPECTED. SCZ040-042>045-260500- /O.UPG.KCHS.WS.A.0002.101226T0800Z-101227T0500Z/ /O.NEW.KCHS.WS.W.0002.101226T0800Z-101227T0500Z/ ALLENDALE-HAMPTON-INLAND COLLETON-DORCHESTER-INLAND BERKELEY- INCLUDING THE CITIES OF...ALLENDALE...HAMPTON...WALTERBORO... ST. GEORGE...SUMMERVILLE...MONCKS CORNER 214 PM EST SAT DEC 25 2010 ...WINTER STORM WARNING IN EFFECT FROM 3 AM SUNDAY TO MIDNIGHT EST SUNDAY NIGHT... THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A WINTER STORM WARNING FOR HEAVY SNOW...WHICH IS IN EFFECT FROM 3 AM SUNDAY TO MIDNIGHT EST SUNDAY NIGHT. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. * TIMING: RAIN WILL BEGIN TO CHANGE OVER TO SNOW ACROSS INTERIOR PORTIONS OF SOUTHERN SOUTH CAROLINA BETWEEN 3 AM AND 7AM SUNDAY. PERIODS OF LIGHT TO MODERATE SNOW ARE EXPECTED FOR MUCH OF THE DAY SUNDAY ACROSS THE WARNING AREA BEFORE TAPERING OFF DURING THE LATE AFTERNOON OR EARLY EVENING HOURS. * ACCUMULATION: 1 TO 3 INCHES OF WET SNOW IS EXPECTED ACROSS THE WARNING AREA...PRIMARILY ON GRASSY OR ELEVATED SURFACES. * IMPACTS: ALTHOUGH ROAD SURFACES ARE FAIRLY WARM...SNOW COULD BEGIN TO ACCUMULATE ON ROADS AND BRIDGES DURING HEAVIER BURSTS OF SNOW. ADDITIONALLY...TREE BRANCHES OR LIMBS MAY BE KNOCKED DOWN DUE TO THE HEAVY WET SNOW RESULTING IN SPORADIC POWER OUTAGES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... ARE EXPECTED. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR EVEN IMPOSSIBLE. && $$ GAZ087-088-260500- /O.UPG.KCHS.WS.A.0002.101226T0800Z-101227T0500Z/ /O.NEW.KCHS.WW.Y.0005.101226T0800Z-101227T0500Z/ JENKINS-SCREVEN- INCLUDING THE CITIES OF...MILLEN...SYLVANIA 214 PM EST SAT DEC 25 2010 ...WINTER WEATHER ADVISORY IN EFFECT FROM 3 AM SUNDAY TO MIDNIGHT EST SUNDAY NIGHT... THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM 3 AM SUNDAY TO MIDNIGHT EST SUNDAY NIGHT. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. * TIMING: RAIN WILL BEGIN TO CHANGE OVER TO SNOW ACROSS INTERIOR PORTIONS OF SOUTHEAST GEORGIA BETWEEN 3 AM AND 7AM SUNDAY. PERIODS OF LIGHT TO MODERATE SNOW ARE EXPECTED FOR MUCH OF THE DAY SUNDAY ACROSS THE ADVISORY AREA BEFORE TAPERING OFF DURING THE LATE AFTERNOON OR EARLY EVENING HOURS. * ACCUMULATION: AROUND AN INCH OF SLUSHY SNOW ACCUMULATION IS EXPECTED ACROSS THE ADVISORY AREA...PRIMARILY ON GRASSY OR ELEVATED SURFACES. * IMPACTS: ALTHOUGH ROAD SURFACES ARE FAIRLY WARM...SNOW COULD BRIEFLY ACCUMULATE ON ROADS AND BRIDGES DURING HEAVIER BURSTS OF SNOW. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW ARE EXPECTED. TRAVEL DIFFICULTIES ARE LIKELY...AND MOTORISTS SHOULD BE PREPARED FOR SLIPPERY ROADS AND REDUCED VISIBILITIES. && $$ GAZ099-100-260500- /O.NEW.KCHS.WW.Y.0005.101226T0800Z-101227T0500Z/ CANDLER-BULLOCH- INCLUDING THE CITIES OF...METTER...STATESBORO 214 PM EST SAT DEC 25 2010 ...WINTER WEATHER ADVISORY IN EFFECT FROM 3 AM SUNDAY TO MIDNIGHT EST SUNDAY NIGHT... THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM 3 AM SUNDAY TO MIDNIGHT EST SUNDAY NIGHT. * TIMING: RAIN WILL BEGIN TO CHANGE OVER TO SNOW ACROSS INTERIOR PORTIONS OF SOUTHEAST GEORGIA BETWEEN 3 AM AND 7AM SUNDAY. PERIODS OF LIGHT TO MODERATE SNOW ARE EXPECTED FOR MUCH OF THE DAY SUNDAY ACROSS THE ADVISORY AREA BEFORE TAPERING OFF DURING THE LATE AFTERNOON OR EARLY EVENING HOURS. * ACCUMULATION: AROUND AN INCH OF SLUSHY SNOW ACCUMULATION IS EXPECTED ACROSS THE ADVISORY AREA...PRIMARILY ON GRASSY OR ELEVATED SURFACES. * IMPACTS: ALTHOUGH ROAD SURFACES ARE FAIRLY WARM...SNOW COULD BRIEFLY ACCUMULATE ON ROADS AND BRIDGES DURING HEAVIER BURSTS OF SNOW. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW ARE EXPECTED. TRAVEL DIFFICULTIES ARE LIKELY...AND MOTORISTS SHOULD BE PREPARED FOR SLIPPERY ROADS AND REDUCED VISIBILITIES. && $$ GAZ101-SCZ047>052-260500- /O.NEW.KCHS.WW.Y.0005.101226T1000Z-101227T0500Z/ EFFINGHAM-INLAND JASPER-BEAUFORT-COASTAL COLLETON-CHARLESTON- COASTAL JASPER-TIDAL BERKELEY- INCLUDING THE CITIES OF...SPRINGFIELD...RIDGELAND...BEAUFORT... HILTON HEAD...EDISTO BEACH...CHARLESTON...JASPER... DANIEL ISLAND...NAVAL WEAPONS STATION CHARLESTON 214 PM EST SAT DEC 25 2010 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 AM SUNDAY TO MIDNIGHT EST SUNDAY NIGHT... THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM 5 AM SUNDAY TO MIDNIGHT EST SUNDAY NIGHT. * TIMING: RAIN WILL BEGIN TO CHANGE OVER TO SNOW ACROSS INTERIOR PORTIONS OF SOUTHEAST GEORGIA BETWEEN 5 AM AND 9 AM SUNDAY AND BETWEEN 7 AM AND 11 AM SUNDAY ACROSS SOUTHERN SOUTH CAROLINA. PERIODS OF LIGHT TO MODERATE SNOW ARE EXPECTED FOR MUCH OF THE DAY ACROSS THE ADVISORY AREA BEFORE TAPERING OFF DURING THE LATE AFTERNOON OR EARLY EVENING HOURS. * ACCUMULATION: AROUND AN INCH OF SLUSHY SNOW ACCUMULATION IS EXPECTED ACROSS THE ADVISORY AREA...PRIMARILY ON GRASSY OR ELEVATED SURFACES. * IMPACTS: ALTHOUGH ROAD SURFACES ARE FAIRLY WARM...SNOW COULD BRIEFLY ACCUMULATE ON ROADS AND BRIDGES DURING HEAVIER BURSTS OF SNOW. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW ARE EXPECTED. TRAVEL DIFFICULTIES ARE LIKELY...AND MOTORISTS SHOULD BE PREPARED FOR SLIPPERY ROADS AND REDUCED VISIBILITIES. && $$
4 follow-up statements
663 WWUS42 KCHS 260325 WSWCHS URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE CHARLESTON SC 1025 PM EST SAT DEC 25 2010 .A STRENGTHENING AREA OF LOW PRESSURE WILL MOVE UP THE COAST OF THE SOUTHEAST UNITED STATES THROUGH SUNDAY. RAIN IS EXPECTED TO CHANGE OVER TO SNOW ACROSS PORTIONS OF THE AREA LATE TONIGHT OR SUNDAY MORNING...WITH SOME ACCUMULATION EXPECTED. SCZ040-042>045-261130- /O.CON.KCHS.WS.W.0002.101226T0800Z-101227T0500Z/ ALLENDALE-HAMPTON-INLAND COLLETON-DORCHESTER-INLAND BERKELEY- INCLUDING THE CITIES OF...ALLENDALE...HAMPTON...WALTERBORO... ST. GEORGE...SUMMERVILLE...MONCKS CORNER 1025 PM EST SAT DEC 25 2010 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 3 AM SUNDAY TO MIDNIGHT EST SUNDAY NIGHT... A WINTER STORM WARNING FOR HEAVY SNOW REMAINS IN EFFECT FROM 3 AM SUNDAY TO MIDNIGHT EST SUNDAY NIGHT. * TIMING: RAIN WILL BEGIN TO CHANGE OVER TO SNOW ACROSS INTERIOR PORTIONS OF SOUTHERN SOUTH CAROLINA BETWEEN 3 AM AND 7AM SUNDAY. PERIODS OF LIGHT TO MODERATE SNOW ARE EXPECTED FOR MUCH OF THE DAY SUNDAY ACROSS THE WARNING AREA BEFORE TAPERING OFF DURING THE LATE AFTERNOON OR EARLY EVENING HOURS. * ACCUMULATION: 1 TO 3 INCHES OF WET SNOW...PRIMARILY ON GRASSY OR ELEVATED SURFACES. * IMPACTS: ALTHOUGH ROAD SURFACES ARE FAIRLY WARM...SNOW COULD BEGIN TO ACCUMULATE ON ROADS AND BRIDGES DURING HEAVIER BURSTS OF SNOW. ADDITIONALLY...TREE BRANCHES OR LIMBS MAY BE KNOCKED DOWN DUE TO THE HEAVY WET SNOW RESULTING IN SPORADIC POWER OUTAGES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... ARE EXPECTED. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR EVEN IMPOSSIBLE. && $$ GAZ087-088-099-100-261130- /O.CON.KCHS.WW.Y.0005.101226T0800Z-101227T0500Z/ JENKINS-SCREVEN-CANDLER-BULLOCH- INCLUDING THE CITIES OF...MILLEN...SYLVANIA...METTER...STATESBORO 1025 PM EST SAT DEC 25 2010 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 3 AM SUNDAY TO MIDNIGHT EST SUNDAY NIGHT... A WINTER WEATHER ADVISORY FOR SNOW REMAINS IN EFFECT FROM 3 AM SUNDAY TO MIDNIGHT EST SUNDAY NIGHT. * TIMING: RAIN WILL BEGIN TO CHANGE OVER TO SNOW ACROSS INTERIOR PORTIONS OF SOUTHEAST GEORGIA BETWEEN 3 AM AND 7AM SUNDAY. PERIODS OF LIGHT TO MODERATE SNOW ARE EXPECTED FOR MUCH OF THE DAY SUNDAY ACROSS THE ADVISORY AREA BEFORE TAPERING OFF DURING THE LATE AFTERNOON OR EARLY EVENING HOURS. * ACCUMULATION: AROUND 1 INCH OF WET SNOW...PRIMARILY ON GRASSY OR ELEVATED SURFACES. * IMPACTS: ALTHOUGH ROAD SURFACES ARE FAIRLY WARM...SNOW COULD BRIEFLY ACCUMULATE ON ROADS AND BRIDGES DURING HEAVIER BURSTS OF SNOW. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW ARE EXPECTED. TRAVEL DIFFICULTIES ARE LIKELY...AND MOTORISTS SHOULD BE PREPARED FOR SLIPPERY ROADS AND REDUCED VISIBILITIES. && $$ GAZ101-SCZ047>052-261130- /O.CON.KCHS.WW.Y.0005.101226T1000Z-101227T0500Z/ EFFINGHAM-INLAND JASPER-BEAUFORT-COASTAL COLLETON-CHARLESTON- COASTAL JASPER-TIDAL BERKELEY- INCLUDING THE CITIES OF...SPRINGFIELD...RIDGELAND...BEAUFORT... HILTON HEAD...EDISTO BEACH...CHARLESTON...JASPER... DANIEL ISLAND...NAVAL WEAPONS STATION CHARLESTON 1025 PM EST SAT DEC 25 2010 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 AM SUNDAY TO MIDNIGHT EST SUNDAY NIGHT... A WINTER WEATHER ADVISORY FOR SNOW REMAINS IN EFFECT FROM 5 AM SUNDAY TO MIDNIGHT EST SUNDAY NIGHT. * TIMING: RAIN WILL BEGIN TO CHANGE OVER TO SNOW ACROSS INTERIOR PORTIONS OF SOUTHEAST GEORGIA BETWEEN 5 AM AND 9 AM SUNDAY AND BETWEEN 7 AM AND 11 AM SUNDAY ACROSS SOUTHERN SOUTH CAROLINA. PERIODS OF LIGHT TO MODERATE SNOW ARE EXPECTED FOR MUCH OF THE DAY ACROSS THE ADVISORY AREA BEFORE TAPERING OFF DURING THE LATE AFTERNOON OR EARLY EVENING HOURS. * ACCUMULATION: AROUND 1 INCH OF WET SNOW...PRIMARILY ON GRASSY OR ELEVATED SURFACES. * IMPACTS: ALTHOUGH ROAD SURFACES ARE FAIRLY WARM...SNOW COULD BRIEFLY ACCUMULATE ON ROADS AND BRIDGES DURING HEAVIER BURSTS OF SNOW. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW ARE EXPECTED. TRAVEL DIFFICULTIES ARE LIKELY...AND MOTORISTS SHOULD BE PREPARED FOR SLIPPERY ROADS AND REDUCED VISIBILITIES. && $$
444 WWUS42 KCHS 261043 WSWCHS URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE CHARLESTON SC 543 AM EST SUN DEC 26 2010 SCZ040-042>045-261700- /O.CON.KCHS.WS.W.0002.000000T0000Z-101227T0500Z/ ALLENDALE-HAMPTON-INLAND COLLETON-DORCHESTER-INLAND BERKELEY- INCLUDING THE CITIES OF...ALLENDALE...HAMPTON...WALTERBORO... ST. GEORGE...SUMMERVILLE...MONCKS CORNER 543 AM EST SUN DEC 26 2010 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT EST TONIGHT... A WINTER STORM WARNING FOR HEAVY SNOW REMAINS IN EFFECT UNTIL MIDNIGHT EST TONIGHT. * TIMING: RAIN WILL TRANSITION TO SNOW ACROSS INTERIOR PORTIONS OF SOUTHERN SOUTH CAROLINA AROUND DAYBREAK TODAY. SCATTERED SNOW SHOWERS WILL BE POSSIBLE THROUGH MID TO LATE MORNING...THEN BECOME MORE NUMEROUS AND CONTINUE INTO THE AFTERNOON. SNOW WILL BEGIN TO TAPER OFF LATER THIS AFTERNOON WITH ONLY FLURRIES EXPECTED AFTER 8 PM. * ACCUMULATION: 1 TO 2 INCHES OF WET SNOW...PRIMARILY ON GRASSY AND ELEVATED SURFACES. THE GREATEST ACCUMULATIONS WILL BE ACROSS NORTHERN PORTIONS OF THE WARNING AREA...GENERALLY NORTH OF A LINE FROM MONCKS CORNER TO RIDGEVILLE TO ALLENDALE. TO THE SOUTH...SNOWFALL TOTALS WILL RANGE FROM A HALF TO ONE INCH. * IMPACTS: ALTHOUGH ROAD SURFACES ARE FAIRLY WARM...SNOW COULD BEGIN TO ACCUMULATE ON ROADS AND BRIDGES DURING HEAVIER BURSTS OF SNOW. ADDITIONALLY...ISOLATED POWER OUTAGES WILL BE POSSIBLE AS THE HEAVY WET SNOW CAUSES TREE BRANCHES TO DROOP OR SNAP. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING MEANS SIGNIFICANT SNOWFALL IS EXPECTED. THIS WILL MAKE TRAVEL VERY HAZARDOUS. STAY TUNED TO NOAA WEATHER RADIO ALL HAZARDS OR WEATHER.GOV/CHS FOR THE LATEST INFORMATION. && $$ GAZ087-088-099-100-261700- /O.CON.KCHS.WW.Y.0005.000000T0000Z-101227T0500Z/ JENKINS-SCREVEN-CANDLER-BULLOCH- INCLUDING THE CITIES OF...MILLEN...SYLVANIA...METTER...STATESBORO 543 AM EST SUN DEC 26 2010 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EST TONIGHT... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EST TONIGHT. * TIMING: RAIN WILL TRANSITION TO SNOW AROUND DAYBREAK TODAY WITH ISOLATED TO SCATTERED SNOW SHOWERS EXPECTED THROUGH LATE MORNING. SNOW SHOWERS WILL BECOME MORE WIDESPREAD AFTER NOON TODAY...EVENTUALLY TAPERING OFF LATE THIS AFTERNOON. * ACCUMULATION: UP TO ONE INCH OF WET SNOW ON ELEVATED AND GRASSY SURFACES. THE HIGHEST TOTALS WILL BE ALONG AND NORTH OF A LINE FROM NEWINGTON TO PORTAL TO SWAINSBORO. * IMPACTS: ALTHOUGH ROAD SURFACES ARE FAIRLY WARM...SNOW COULD BRIEFLY ACCUMULATE ON ROADS AND BRIDGES DURING HEAVIER BURSTS OF SNOW. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW ARE EXPECTED. TRAVEL DIFFICULTIES ARE LIKELY...AND MOTORISTS SHOULD BE PREPARED FOR SLIPPERY ROADS AND REDUCED VISIBILITIES. STAY TUNED TO NOAA WEATHER RADIO ALL HAZARDS OR WEATHER.GOV/CHS FOR THE LATEST INFORMATION. && $$ GAZ101-SCZ047>052-261700- /O.CON.KCHS.WW.Y.0005.000000T0000Z-101227T0500Z/ EFFINGHAM-INLAND JASPER-BEAUFORT-COASTAL COLLETON-CHARLESTON- COASTAL JASPER-TIDAL BERKELEY- INCLUDING THE CITIES OF...SPRINGFIELD...RIDGELAND...BEAUFORT... HILTON HEAD...EDISTO BEACH...CHARLESTON...JASPER... DANIEL ISLAND...NAVAL WEAPONS STATION CHARLESTON 543 AM EST SUN DEC 26 2010 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EST TONIGHT... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EST TONIGHT. * TIMING: RAIN WILL CHANGE OVER TO SNOW SHORTLY AFTER DAYBREAK TODAY. SCATTERED SNOW SHOWERS ARE THEN EXPECTED FOR MUCH OF THE DAY...MOST NUMEROUS DURING THE MIDDLE TO LATE AFTERNOON. SNOW WILL TAPER OFF BY EARLY THIS EVENING...WITH PATCHY SNOW FLURRIES POSSIBLE THROUGH MIDNIGHT. * ACCUMULATION: UP TO ONE INCH OF WET SNOW...PRIMARILY ON GRASSY OR ELEVATED SURFACES. THE GREATEST ACCUMULATIONS WILL BE ACROSS FAR NORTHERN PORTIONS OF THE ADVISORY AREA. ALONG AND EAST OF HIGHWAY 17...LITTLE TO NO ACCUMULATION IS EXPECTED. * IMPACTS: ALTHOUGH ROAD SURFACES ARE FAIRLY WARM...SNOW COULD BRIEFLY ACCUMULATE ON ROADS AND BRIDGES DURING HEAVIER BURSTS OF SNOW. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW ARE EXPECTED. TRAVEL DIFFICULTIES ARE LIKELY...AND MOTORISTS SHOULD BE PREPARED FOR SLIPPERY ROADS AND REDUCED VISIBILITIES. STAY TUNED TO NOAA WEATHER RADIO ALL HAZARDS OR WEATHER.GOV/CHS FOR THE LATEST INFORMATION. && $$ JRL
696 WWUS42 KCHS 261635 WSWCHS URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE CHARLESTON SC 1135 AM EST SUN DEC 26 2010 SCZ040-042>045-262300- /O.CON.KCHS.WS.W.0002.000000T0000Z-101227T0500Z/ ALLENDALE-HAMPTON-INLAND COLLETON-DORCHESTER-INLAND BERKELEY- INCLUDING THE CITIES OF...ALLENDALE...HAMPTON...WALTERBORO... ST. GEORGE...SUMMERVILLE...MONCKS CORNER 1135 AM EST SUN DEC 26 2010 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT EST TONIGHT... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT EST TONIGHT. * TIMING: NUMEROUS SNOW SHOWERS WILL CONTINUE TO AFFECT THE AREA THROUGH LATE THIS AFTERNOON...BEFORE TAPERING OFF TO FLURRIES THIS EVENING. * ACCUMULATION: 1 TO 2 INCHES OF WET SNOW...PRIMARILY ON GRASSY AND ELEVATED SURFACES. THE GREATEST ACCUMULATIONS WILL BE ACROSS NORTHERN PORTIONS OF THE WARNING AREA...GENERALLY NORTH OF A LINE FROM MONCKS CORNER TO RIDGEVILLE TO ALLENDALE. TO THE SOUTH OF THIS LINE...SNOWFALL TOTALS WILL RANGE FROM A HALF TO ONE INCH. * IMPACTS: ALTHOUGH ROAD SURFACES ARE FAIRLY WARM...SNOW COULD BEGIN TO ACCUMULATE ON ROADS AND BRIDGES DURING HEAVIER BURSTS OF SNOW. ADDITIONALLY...ISOLATED POWER OUTAGES WILL BE POSSIBLE IF THE HEAVY WET SNOW CAUSES TREE BRANCHES OR TREE LIMBS TO SNAP. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING MEANS SIGNIFICANT SNOWFALL IS EXPECTED. THIS WILL MAKE TRAVEL VERY HAZARDOUS. STAY TUNED TO NOAA WEATHER RADIO ALL HAZARDS OR WEATHER.GOV/CHS FOR THE LATEST INFORMATION. && $$ GAZ087-088-099-100-262300- /O.CON.KCHS.WW.Y.0005.000000T0000Z-101227T0500Z/ JENKINS-SCREVEN-CANDLER-BULLOCH- INCLUDING THE CITIES OF...MILLEN...SYLVANIA...METTER...STATESBORO 1135 AM EST SUN DEC 26 2010 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EST TONIGHT... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EST TONIGHT. * TIMING: SCATTERED TO NUMEROUS SNOW SHOWERS ARE EXPECTED THROUGH THE AFTERNOON...BEFORE TAPERING OFF TO FLURRIES BY THIS EVENING. * ACCUMULATION: A DUSTING UP TO 1 INCH OF SNOW ACCUMULATION IS EXPECTED...PRIMARILY ON GRASSY OR ELEVATED SURFACES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW ARE EXPECTED. TRAVEL DIFFICULTIES ARE LIKELY...AND MOTORISTS SHOULD BE PREPARED FOR SLIPPERY ROADS AND REDUCED VISIBILITIES. STAY TUNED TO NOAA WEATHER RADIO ALL HAZARDS OR WEATHER.GOV/CHS FOR THE LATEST INFORMATION. && $$ GAZ101-SCZ047>052-262300- /O.CON.KCHS.WW.Y.0005.000000T0000Z-101227T0500Z/ EFFINGHAM-INLAND JASPER-BEAUFORT-COASTAL COLLETON-CHARLESTON- COASTAL JASPER-TIDAL BERKELEY- INCLUDING THE CITIES OF...SPRINGFIELD...RIDGELAND...BEAUFORT... HILTON HEAD...EDISTO BEACH...CHARLESTON...JASPER... DANIEL ISLAND...NAVAL WEAPONS STATION CHARLESTON 1135 AM EST SUN DEC 26 2010 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EST TONIGHT... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EST TONIGHT. * TIMING: ANY MIX OF RAIN OR SNOW WILL TRANSITION TO ALL SNOW BY EARLY THIS AFTERNOON...WITH NUMEROUS SNOW SHOWERS EXPECTED THROUGH LATE THIS AFTERNOON. SNOW SHOWERS WILL TRANSITION TO SNOW FLURRIES THIS EVENING THEN END BY MIDNIGHT. * ACCUMULATION: A DUSTING UP TO 1 INCH OF SNOW ACCUMULATION IS EXPECTED...PRIMARILY ON GRASSY OR ELEVATED SURFACES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW ARE EXPECTED. TRAVEL DIFFICULTIES ARE LIKELY...AND MOTORISTS SHOULD BE PREPARED FOR SLIPPERY ROADS AND REDUCED VISIBILITIES. STAY TUNED TO NOAA WEATHER RADIO ALL HAZARDS OR WEATHER.GOV/CHS FOR THE LATEST INFORMATION. && $$
483 WWUS42 KCHS 262104 WSWCHS URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE CHARLESTON SC 404 PM EST SUN DEC 26 2010 SCZ040-042>045-270500- /O.CAN.KCHS.WS.W.0002.000000T0000Z-101227T0500Z/ /O.EXA.KCHS.WW.Y.0005.000000T0000Z-101227T0500Z/ ALLENDALE-HAMPTON-INLAND COLLETON-DORCHESTER-INLAND BERKELEY- INCLUDING THE CITIES OF...ALLENDALE...HAMPTON...WALTERBORO... ST. GEORGE...SUMMERVILLE...MONCKS CORNER 404 PM EST SUN DEC 26 2010 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL MIDNIGHT EST TONIGHT... ...WINTER STORM WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT UNTIL MIDNIGHT EST TONIGHT. THE WINTER STORM WARNING HAS BEEN CANCELLED. * TIMING: SCATTERED LIGHT TO MODERATE SNOW SHOWERS WILL CONTINUE TO IMPACT THE ADVISORY AREA THIS EVENING BEFORE TAPERING TO FLURRIES PRIOR TO MIDNIGHT. * ACCUMULATION: A DUSTING UP TO 1 INCH OF SNOW ACCUMULATION IS EXPECTED...PRIMARILY ON GRASSY OR ELEVATED SURFACES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW ARE EXPECTED OR OCCURRING. TRAVEL DIFFICULTIES ARE LIKELY...AND MOTORISTS SHOULD BE PREPARED FOR SLIPPERY ROADS AND REDUCED VISIBILITIES. STAY TUNED TO NOAA WEATHER RADIO ALL HAZARDS OR WEATHER.GOV/CHS FOR THE LATEST INFORMATION. && $$ GAZ087-088-099>101-SCZ047>052-270500- /O.CON.KCHS.WW.Y.0005.000000T0000Z-101227T0500Z/ JENKINS-SCREVEN-CANDLER-BULLOCH-EFFINGHAM-INLAND JASPER-BEAUFORT- COASTAL COLLETON-CHARLESTON-COASTAL JASPER-TIDAL BERKELEY- INCLUDING THE CITIES OF...MILLEN...SYLVANIA...METTER... STATESBORO...SPRINGFIELD...RIDGELAND...BEAUFORT...HILTON HEAD... EDISTO BEACH...CHARLESTON...JASPER...DANIEL ISLAND... NAVAL WEAPONS STATION CHARLESTON 404 PM EST SUN DEC 26 2010 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EST TONIGHT... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EST TONIGHT. * TIMING: SCATTERED LIGHT TO MODERATE SNOW SHOWERS WILL CONTINUE TO IMPACT THE ADVISORY AREA THIS EVENING BEFORE TAPERING TO FLURRIES PRIOR TO MIDNIGHT. * ACCUMULATION: A DUSTING UP TO 1 INCH OF SNOW ACCUMULATION IS EXPECTED...PRIMARILY ON GRASSY OR ELEVATED SURFACES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW ARE EXPECTED OR OCCURRING. TRAVEL DIFFICULTIES ARE LIKELY...AND MOTORISTS SHOULD BE PREPARED FOR SLIPPERY ROADS AND REDUCED VISIBILITIES. STAY TUNED TO NOAA WEATHER RADIO ALL HAZARDS OR WEATHER.GOV/CHS FOR THE LATEST INFORMATION. && $$
What forecasters said that day
The local office's own words before this winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Charleston, SC wrote its last area forecast discussion before this winter storm warning went out at Dec 25, 12:35 PM EST, 1 hour 39 minutes earlier.
Area forecast discussion, Dec 25, 12:35 PM EST, 1 hour 39 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHARLESTON SC
1235 PM EST SAT DEC 25 2010
.SYNOPSIS...
HIGH PRESSURE WILL SHIFT OFF THE COAST TODAY BEFORE A COMPLEX LOW
PRESSURE SYSTEM MOVES OUT OF THE GULF OF MEXICO AND UP THE
SOUTHEAST COAST LATE TONIGHT. SIGNIFICANT MOISTURE WILL WRAP
AROUND THE BACK SIDE OF THE DEPARTING LOW ON SUNDAY BEFORE DRIER
HIGH PRESSURE FILTERS IN FROM THE NORTHWEST SUNDAY NIGHT THROUGH
TUESDAY. ATLANTIC HIGH PRESSURE WILL DELIVER MUCH MILDER WEATHER
TOWARD THE END OF NEXT WEEK.
&&
.NEAR TERM /UNTIL 6 PM THIS EVENING/...
HIGH PRESSURE WILL CONTINUE TO PUSH EASTWARD AND INTO THE ATLANTIC
THIS AFTERNOON...WHILE A DEVELOPING AREA OF LOW PRESSURE CURRENTLY
LOCATED IN THE NORTH-CENTRAL GULF OF MEXICO TRACKS INTO THE BIG BEND
OF FLORIDA BY THIS EVENING. VISIBLE SATELLITE IMAGERY DEPICTS MOSTLY
CLEAR/PARTLY CLOUDY CONDITIONS ACROSS THE FORECAST AREA...WITH CLOUD
COVER QUICKLY INCREASING OFF TO THE WEST. THIS CLOUD COVER WILL
CONTINUE TO SHIFT EASTWARD THROUGH THE AFTERNOON HOURS...SO WILL
LOOK FOR INCREASING CLOUDS WITH SKIES BECOMING MOSTLY CLOUDY ALL
LOCALES BY MID AFTERNOON. THE 12Z NAM APPEARS TO BE HANDLING
UPSTREAM PRECIPITATION WELL...SO WILL FOLLOW IT/S SOLUTIONS FOR
AFTERNOON POPS. WITH GOOD FORCING FOR ASCENT OVERSPREADING THE AREA
IN ASSOCIATION WITH THE SHORTWAVE TROUGH ALONG THE NORTH/CENTRAL
GULF COAST...ALONG WITH THE ARRIVAL OF DEEPER MOISTURE SHOWN IN
H85-H5 CONDENSATION PRESSURE DEFICITS FALLING TO 30 MB OR LESS
ACROSS A LARGE PORTION OF THE CWA BY 00Z SUNDAY...EXPECT THAT SOME
SCATTERED SHOWERS/LIGHT RAIN WILL DEVELOP BY LATE THIS AFTERNOON
ACROSS MOST LOCALES. WILL CARRY HIGH CHANCE POPS ACROSS MAINLY
INTERIOR SOUTHEAST GEORGIA ZONES...WITH SLIGHT CHANCE POPS ELSEWHERE
EXCEPT FOR FAR NORTHEASTERN ZONES WHERE RAIN SHOULD HOLD OFF UNTIL
THIS EVENING. TEMPERATURES ARE EXPECTED TO TOP OUT IN THE MID 50S
ACROSS THE WESTERN TIER OF COUNTIES...AND IN THE UPPER 50S NORTH TO
AROUND 60/LOWER 60S SOUTH IN LOCATIONS CLOSER TO THE COAST. UPDATE
OUT SHORTLY.
&&
.SHORT TERM /6 PM THIS EVENING THROUGH TUESDAY/...
A 135 KT JET STREAK MOVING OFF THE NORTHERN FL COAST WILL
INCREASE UPPER LEVEL DIFFLUENCE ACROSS SOUTHERN SC AND SOUTHEAST
GA LATE THIS AFTERNOON/EARLY THIS EVENING. MEANWHILE...LOW LEVEL
MOISTURE WILL RAPIDLY INCREASE AS THE UPPER LONGWAVE TROUGH DIGS
SOUTHEAST AND THE LOW AND MID LEVEL FLOW BACKS IN RESPONSE. STRONG
POSITIVE VORTICITY ADVECTION WILL OVERSPREAD THE AREA FROM THE
SOUTHWEST AFTER 21Z...WITH 700 MB OMEGA MAXIMIZED BETWEEN 03-09Z.
ADDITIONALLY...ALL GUIDANCE INDICATES STRONG Q-VECTOR CONVERGENCE
BETWEEN 06-12Z IN RESPONSE TO THE DEEPENING UPPER LOW AS IT TRACKS
EAST THROUGH SC/GA. WE EXPECT RAIN TO BEGIN MOVING INTO WESTERN
ZONES LATE THIS AFTERNOON WITH WIDESPREAD RAIN AFFECTING ALL AREAS
BY MID TO LATE EVENING. THE HEAVIEST ACTIVITY SHOULD BE FOCUSED
ACROSS SOUTHEAST GA THIS EVENING AND ACROSS SOUTHERN SC AFTER
MIDNIGHT.
THE REAL INTERESTING PART OF THIS FORECAST REVOLVES AROUND THE
EVOLUTION OF THE THERMAL PROFILE LATER TONIGHT. MUCH COLDER AIR
WILL ROTATE INTO THE REGION OVERNIGHT AS THE UPPER LOW GRADUALLY
BECOMES VERTICALLY STACKED AND MOVES EAST. ONE OF THE FEW ISSUES
THAT THE DYNAMICAL MODELS CURRENTLY AGREE ON IS THE DEEP-LAYERED
COLD ADVECTION LATER TONIGHT. CRITICAL THICKNESS PROGS ARE
SURPRISINGLY SIMILAR BETWEEN THE GFS/NAM/ECMWF/GEM...INDICATING
THE COLUMN DROPPING BELOW FREEZING FOR ALL BUT THE LOWEST 800-1000
FT FOR OUR INTERIOR TWO-THIRDS BETWEEN 08-12Z SUN. THE NAM AND
ECMWF ARE A BIT MORE CONSERVATIVE WITH THE DEEP COOLING LATE
TONIGHT VS THE GFS AND GEM. A COMPROMISE BETWEEN THE TWO CAMPS
WOULD STILL ALLOW RAIN TO CHANGE OVER TO SNOW ACROSS THE INTERIOR
THIRD OF THE FORECAST AREA WITH SOME SNOW LIKELY MIXING IN ACROSS
THE CENTRAL THIRD TOWARD DAYBREAK SUNDAY.
WE HAVE INDICATED THIS TRANSITION IN OUR WEATHER GRIDS. WE BUMPED
POPS UP TO CATEGORICAL IN MOST AREAS OVERNIGHT. SURFACE
TEMPERATURES LATE TONIGHT DURING WHICH WE EXPECT THE P-TYPE
TRANSITION ARE VERY TRICKY. THE GFS LAMP AND NAM-12 TEMP PROGS
SEEMED PRETTY REASONABLE...SHOWING SFC TEMPS DROPPING INTO THE
LOWER 30S CLOSE TO DAYBREAK SUNDAY FAR INLAND...WITH MIDDLE 30S
MOST OTHER LOCALES INLAND FROM THE COAST.
IN THE PAST COUPLE OF MODEL CYCLES...WE HAVE SEEN A SHIFT TO A
SCENARIO WHICH FAVORS INCREASED MOISTURE OVER EASTERN SOUTH
CAROLINA IN THE COLD SIDE OF THE STORM. THE GFS AND ECMWF BOTH
HAVE SIMILAR SOLUTIONS WITH THE TRACK AND TIMING OF ATLC COASTAL
LOW PRES WHICH ROCKETS NE OVER THE N WALL OF GULF STREAM OFF THE
NORTH CAROLINA COAST BY EARLY SUNDAY AFTERNOON. WE HAVE SEEN
PERSISTENT MODEL TRENDS FOR SEVERAL DAYS INDICATING IMPRESSIVE
Q-G FORCING AND VARIOUS OTHER UPPER LEVEL DYNAMICS ASSOCIATED
WITH THE POWERFUL MID LEVEL TROUGH REFLECTION AND CORE OF THE
500 MB LOW INTO THE SOUTH CAROLINA MIDLANDS BY EARLY AFTERNOON.
THE QUESTIONS HAVE BEEN BACKSIDE MOISTURE AND QPF AND OF
COURSE THE ALWAYS TRICKY LOW LEVEL THERMAL PROFILES IN TANDEM
WITH CAROLINA SNOWFALLS. TONIGHT WE HAVE SEEN IMPRESSIVE NAM
AND SREF SOLUTIONS WHICH PAINT ACCUMULATING 2-4 SNOWS OVER OUR
INLAND TIER OF ZONES FROM THE SAVANNAH RIVER GEORGIA ZONES
ADJACENT TO THE CSRA EAST TO THE NORTHERN FRINGES OF THE
CHARLESTON TRI-COUNTY AREA. THE ENTIRE LOW LEVEL COLD AIR MASS
UP THROUGH 850 MB IS EXPECTED TO ROCK CYCLONICALLY ALLOWING
RAIN TO SNOW CHANGEOVER TO OCCUR LAST ALONG COASTAL CHARLESTON
COUNTY AND BY THEN IT COULD JUST BE SNOW SHOWERS. WE THINK INLAND
RAIN AND SNOW WILL SWITCH OVER THE SNOW FAIRLY QUICKLY BY MID
MORNING SUNDAY TO THE W OF I-95 AND SAVANNAH PROPER AND SNOWFALL
ACCUMULATIONS IN BANDS ARE EXPECTED TO BE VERY WET AND SLUSHY.
IN FACT...THE BIG QUESTIONS ARE WHEN/WHERE AND WHETHER IT WILL
SNOW HARD ENOUGH TO START REACHING CRITERIA ACCUMULATIONS. WE
THINK THE BEST CHANCE WILL BE OVER OUR NW TIER OF ZONES BORDERING
THE CSRA/MIDLANDS/SRN PEE DEE. PER COORDINATION WITH WFOS CAE/ILM
THIS MORNING...WE HAVE ISSUED A WINTER STORM WATCH FOR THIS
REGION AND EXPECT UP TO 2 INCHES POSSIBLE IN SOME AREAS. MESO-
SCALE BANDING MAY TAKE OVER THE SNOW PRODUCTION REALM AND THIS IS
WHERE THE FORECAST GETS VERY TRICKY AS SOME LOCATIONS COULD SEE
EVEN HIGHER TOTALS WHILE OTHER AREAS STRUGGLE TO SEE MORE THAN
LIGHT SNOW SHOWERS BY LATE MORNING INTO THE AFTERNOON. IT IS A
VERY TRICKY FORECAST AND WITH HOLIDAY WEEKEND TRAVEL CONCERNS AND
A BETTER SUITE OF MODELS SHOWING POTENTIAL ACCUMULATIONS...WE WERE
COMFORTABLE WITH A WATCH AT THIS POINT. CLOSER TO THE SOUTH
CAROLINA COAST GETS EVEN DICIER BY AFTERNOON...NOT ENOUGH
CONFIDENCE TO SHOW MUCH SNOW ACCUMULATION AT THIS POINT. WE
CONTINUE TO TREND DOWN ON TEMPERATURES ON SUNDAY WITH STEADY OR
FALLING READINGS MANY AREAS AS THE COLD AIR WORKS IN. MANY AREAS
IN GEORGIA COULD GET BREEZY TO WINDY AS THE DYNAMICS TIGHTEN THE
OFFSHORE PRES GRADIENT DURING THE DAY IN THAT AREA ALONG WITH
LOWER POPS AFTER MIDDAY.
SUNDAY NIGHT...ANY REMAINING LIGHT SNOW BANDS OR FLURRIES WILL
END AND SKIES SHOULD CLEAR LATE. NOT MUCH CHANGE TO A COLD MON WITH
HIGHS IN THE MID 40S AT BEST. HIGHS CLOSER TO 50 ON TUE WITH MORE
SUNSHINE. OVERNIGHT WINDS WILL BE TRICKY FOR LOW TEMPERATURE
PROGNOSTICATIONS...WE KEPT SOLID PERSISTENCE WITH THE PREVIOUS
FORECAST.
&&
.LONG TERM /TUESDAY NIGHT THROUGH FRIDAY/...
SIGNIFICANT MODERATION IN TEMPERATURES WILL BEGIN MID WEEK WITH
COLD AIR ADVECTION SHUTTING DOWN AND A MODIFIED CONTINENTAL AIR
MASS BUILDING IN FROM THE MID SOUTH REGION TAKING HOLD. AN ATLC
RIDGE WILL PUMP WARMER AND MOIST AIR INTO GEORGIA AND THE
CAROLINAS BY LATE WEEK. NO CHANGES TO THINKING WITH HIGHS WELL
INTO THE 50S ON WED...60S THU...AND PERHAPS AROUND 70 BY FRI. ANY
RAIN CHANCES APPEAR VERY SMALL UNTIL A COLD FRONT APPROACHES
SOMETIME NEXT WEEKEND.
&&
.AVIATION /18Z SATURDAY THROUGH WEDNESDAY/...
VFR CONDITIONS WILL PREVAIL THROUGH AT LEAST 00Z THIS EVENING.
CLOUDS WILL INCREASE THROUGH THE DAY WITH LOWERING CIGS INTO MVFR
TONIGHT AS A SIGNIFICANT LOW PRESSURE SYSTEM MOVES INTO THE AREA
FROM THE WEST. RAIN WILL SPREAD IN FROM THE SOUTHWEST WITH PRECIPITATION
BEGINNING AROUND 02-03Z. THE LOW PRESSURE SYSTEM WILL INTENSIFY OFF
THE COAST OVERNIGHT INCREASING NORTH TO NORTHWESTERLY WINDS TO
AROUND 10 KNOTS. CIGS WILL CONTINUE TO LOWER INTO IFR AND POSSIBLY
LIFR CONDITIONS AS DEEP LAYER MOISTURE INCREASES AFTER 05Z. THE
BIG QUESTION WILL BE WITH PRECIPITATION TYPE SUNDAY MORNING WHERE
SNOW MAY BEGIN TO MIX IN WITH RAIN AT BOTH SITES. BY THE AFTERNOON
ANY PRECIPITATION WILL LIKELY BE ALL SNOW. VSBYS WILL DROP IN ANY
SNOW SHOWERS. LAST...GUSTY WINDS BETWEEN 20 AND 25 KNOTS WILL BE
POSSIBLE AFTER 14Z AT SAV AS GEOSTROPHIC WINDS INCREASE.
EXTENDED AVIATION OUTLOOK...MVFR/IFR CIGS CONTINUING INTO SUN
AFTERNOON. LOWER VSBYS AT TIMES SUNDAY AFTERNOON IN SNOW SHOWERS.
VFR CONDITIONS TO RETURN SUNDAY EVENING THROUGH MUCH OF NEXT WEEK.
&&
.MARINE...
A VERY WEAK PRESSURE GRADIENT WILL EXIST OVER THE COASTAL WATERS
THROUGH MIDDAY AS A SURFACE HIGH MEANDERS OVERHEAD. AN INCREASING
SOUTHWESTERLY FLOW IS ANTICIPATED THIS AFTERNOON AND EVENING AHEAD
OF A POWERFUL UPPER LOW. THEN WINDS WILL SHIFT TO WNW AFTER
MIDNIGHT AND RAPIDLY INCREASE ONCE THE SURFACE LOW PULLS OFF TO
THE NORTHEAST.
WE CONTINUE TO RAMP UP OUR FORECAST CONDITIONS FOR THIS UPCOMING
GALE EVENT WITH MODELS INDICATING SIGNATURES THAT GALES WILL DEVELOP
ALONG THE EXTREME SOUTHERN SOUTH CAROLINA AND GEORGIA COASTS SUNDAY
IN THE WAKE OF THE DEPARTING COASTAL STORM TO THE NE. UPWARDS OF
50 KT GEOSTROPHIC FLOW AND RAPIDLY IMPROVING MIXED LAYER CONDITIONS
SHOULD RESULT IN WNW FLOW 25 TO 35 KT WITH GUSTS TO 40 KT WELL OFF
THE GEORGIA COAST DURING THIS EVENT. THE RAPID DEEPENING OF THE
GULF STREAM LOW PRES AND FORECAST PRES PATTERNS SUGGEST THE INCREASES
IN WINDS AND SEAS MAY BE SUDDEN AND INTENSE FOR THIS EVENT.
GALES ARE CERTAINLY POSSIBLE OFF THE CHARLESTON COUNTY COAST BUT WE
THINK THE BEST BET AT THIS TIME FAVORS AREAS S OF EDISTO BEACH.
LOOK FOR SMALL CRAFT ADVISORIES TO GO UP LATER TODAY FOR THE
REMAINDER OF OUR WATERS INCLUDING THE CHARLESTON HARBOR FOR LATER
SUNDAY AND CONTINUING INTO MON.
NW FLOW WILL SHUT OFF BY EARLY TUE THEN MUCH LIGHTER WINDS AND SEAS
ARE ANTICIPATED LATER TUE INTO WED.
&&
.CHS WATCHES/WARNINGS/ADVISORIES...
GA...WINTER STORM WATCH FROM LATE TONIGHT THROUGH SUNDAY EVENING
FOR GAZ087-088.
SC...WINTER STORM WATCH FROM LATE TONIGHT THROUGH SUNDAY EVENING
FOR SCZ040-042>045.
MARINE...GALE WATCH FROM SUNDAY MORNING THROUGH LATE SUNDAY NIGHT FOR
AMZ352-354-374.
&&Hazardous weather outlook, Dec 25, 4:52 AM EST, 9 hours 22 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHARLESTON SC 452 AM EST SAT DEC 25 2010 GAZ087-088-SCZ040-042>044-261000- JENKINS-SCREVEN-ALLENDALE-HAMPTON-INLAND COLLETON-DORCHESTER- 452 AM EST SAT DEC 25 2010 ...WINTER STORM WATCH IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST GEORGIA AND SOUTHEAST SOUTH CAROLINA. .DAY ONE...TODAY AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. WINTER STORM WATCH. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. WINTER STORM WATCH. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. GAZ099>101-114>116-118-137-138-140-SCZ047>052-261000- CANDLER-BULLOCH-EFFINGHAM-TATTNALL-EVANS-INLAND BRYAN-INLAND CHATHAM- LONG-INLAND LIBERTY-INLAND MCINTOSH-INLAND JASPER-BEAUFORT- COASTAL COLLETON-CHARLESTON-COASTAL JASPER-TIDAL BERKELEY- 452 AM EST SAT DEC 25 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST GEORGIA AND SOUTHEAST SOUTH CAROLINA. .DAY ONE...TODAY AND TONIGHT. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. WINTER WEATHER...A STRONG AND COMPLEX COASTAL LOW PRESSURE SYSTEM WILL IMPACT THE REGION TONIGHT THROUGH SUNDAY. SUBSTANTIAL COLD AIR WILL SHIFT INTO THE REGION WITH THIS SYSTEM...AND THE RAIN IS EXPECTED TO CHANGE OVER TO SNOW SUNDAY. FORECAST DETAILS SUCH AS DURATION AND ACCUMULATION OF ANY WET SNOW REMAIN UNCERTAIN AT THIS TIME...AS ANY VARIATIONS IN THE EXACT STRENGTH AND TRACK OF THE COASTAL LOW COULD GREATLY ALTER IMPACTS. CONDITIONS WILL CONTINUE TO BE CLOSELY MONITORED AS WINTER WEATHER WATCHES OR ADVISORIES COULD POSSIBLY BE NEEDED FOR PORTIONS OF THE AREA SUNDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. AMZ352-354-374-261000- WATERS FROM EDISTO BEACH SC TO SAVANNAH GA OUT 20 NM- WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA OUT 20 NM...INCLUDING GRAYS REEF NATIONAL MARINE SANCTUARY- WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA EXTENDING FROM 20 TO 60 NM- 452 AM EST SAT DEC 25 2010 ...GALE WATCH IN EFFECT FROM SUNDAY MORNING THROUGH LATE SUNDAY NIGHT... THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS. .DAY ONE...TODAY AND TONIGHT. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. GALE WATCH. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. AMZ330-350-261000- CHARLESTON HARBOR- WATERS FROM SOUTH SANTEE RIVER TO EDISTO BEACH SC OUT 20 NM- 452 AM EST SAT DEC 25 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS. .DAY ONE...TODAY AND TONIGHT. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. GALES...STRONG OFFSHORE WINDS WILL DEVELOP ON SUNDAY THEN CONTINUE INTO MONDAY IN THE WAKE OF A DEPARTING ATLANTIC COASTAL STORM. OCCASIONAL GUSTS TO GALE FORCE ARE POSSIBLE DURING THIS TIME OVER THE ATLANTIC COASTAL WATERS...MAINLY OUTSIDE THE CHARLESTON HARBOR. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. GAZ117-119-139-141-261000- COASTAL BRYAN-COASTAL CHATHAM-COASTAL LIBERTY-COASTAL MCINTOSH- 452 AM EST SAT DEC 25 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST GEORGIA. .DAY ONE...TODAY AND TONIGHT. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. SCZ045-261000- INLAND BERKELEY- 452 AM EST SAT DEC 25 2010 ...WINTER STORM WATCH IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST SOUTH CAROLINA. .DAY ONE...TODAY AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. WINTER STORM WATCH. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. WINTER STORM WATCH. LAKE WINDS...ON LAKE MOULTRIE...A LAKE WIND ADVISORY WILL LIKELY BE NEEDED FOR LATER SUNDAY INTO THE FIRST PART OF THE UPCOMING WEEK. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
The office that day
Everything else NWS Charleston, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 25, 4:03 AM EST | Winter Storm Watch | CHS | Allendale, Berkeley, Colleton, Dorchester, Hampton | 10 hr |
| Dec 25, 2:14 PM EST | Winter Weather Advisory | CHS | Allendale, Berkeley, Colleton, Dorchester, Hampton | 33 hr |
Nearby
Winter Storm Warnings in South Carolina, 2010Every winter storm warning in 2010
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.