Alert archive / South Carolina / Severe Thunderstorm Warnings in 2006
Severe Thunderstorm Warning 83, NWS Wilmington, NC
NWS Wilmington, NC issued this severe thunderstorm warning at May 20, 2006, 6:03 PM EDT for Florence County, Georgetown County, Williamsburg County, South Carolina. It was in force for 57 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 20, 2006, 6:03 PM EDT (22:03 UTC)
- Expired
- May 20, 2006, 7:00 PM EDT
- In force
- 57 min
- Issued by
- NWS Wilmington, NC
- Area
- Counties, with a storm outline in the text
Counties Florence County, SC, Georgetown County, SC, Williamsburg County, SC
The radar
The Wilmington radar (KLTX), 111 km from the middle of the area, began a volume at 22:07 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 20, 3:34 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Charleston AFB, SC (KCHS), launched 12:00Z, 10.1 hours before the alert went out and 96 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
- 8 J/kg
- Mixed-layer CIN
- -289 J/kg
- Mixed-layer LCL
- 2105 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 258 m²/s²
- 0-3 km storm-relative helicity
- 293 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Wilmington, NC wrote its last area forecast discussion before this severe thunderstorm warning went out at May 20, 3:29 PM EDT, 2 hours 34 minutes earlier.
Area forecast discussion, May 20, 3:29 PM EDT, 2 hours 34 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE WILMINGTON NC 329 PM EDT SAT MAY 20 2006 .SHORT TERM /TONIGHT AND SUNDAY/... FRONTAL BOUNDARY TO OUR NW TO DROP INTO THEN AREA TONIGHT AND LINGER INTO SUNDAY AS IMPULSES IN NW FLOW ALOFT AFFECT THE REGION. EXPECT TO SEE THUNDERSTORMS TO THE NW MOVE INTO THE AREA DURING THE LATE AFTERNOON AND EVENING. MORE SHOWERS AND STORMS ARE POSSIBLE ON SUNDAY. && .LONG TERM /SUNDAY NIGHT THROUGH SATURDAY/... A MORE SIGNIFICANT FRONT WILL APPROACH FROM THE NW SUNDAY NIGHT AND MOVE SLOWLY THROUGH THE AREA MONDAY AND MONDAY NIGHT. COULD SEE WIDELY SCATTERED TO SCATTERED SHOWERS AND STORMS SUNDAY NIGHT THROUGH MONDAY EVENING BEFORE THE FRONT GOES THROUGH. DRY WEATHER IS EXPECTED TUESDAY THROUGH WEDNESDAY NIGHT. THURSDAY THROUGH SATURDAY...THE OLD FRONT IS EXPECTED TO OSCILLATE ACROSS THE AREA...YIELDING A CHANCE OF SHOWERS AND STORMS THROUGH THE PERIOD. && .AVIATION... ILL DEFINED W TO E FRONTAL BOUNDARY PAIRED WITH A DEVELOPING PIEDMONT TROUGH WILL BRING A GENERAL SW SYNOPTIC FLOW WITH A COASTAL BACKING ON ACCOUNT OF SEA BREEZE. THIS SETUP ALSO SOMETIMES GIVES RISE TO TRICKY-TO-TIME CONVECTION POPPING UP TO THE NW AND HEADING THIS WAY. RUC FCST SEEMS RATHER PLAUSIBLE IN TAKING A PIECE OF ENERGY ACRS THE REGION AROUND 22Z. TSRA WILL BE POSSIBLE AHEAD OF THIS IMPLUSE THIS AFTERNOON. ANOTHER PIECE MAY TRAVERSE THE AREA IN A SIMILAR FASHION JUST AFTER SUNSET SO THE VCTS WILL HAVE TO BE LEFT IN MOST TERMINALS UNTIL 0300Z OR SO. IF SOME MORE CERTAINTY REGARDING THE TIMING AND PLACEMENT COMES ABOUT THEN TEMPO GROUPS CAN BE INSERTED. && .MARINE... RESIDUAL CONVECTIVE COLD POOL AND ASSOCIATED DISTURBED SURFACE WIND FIELDS CONTINUE TO AFFECT MAINLY THE OFFSHORE WATERS SOUTH OF THE FRYING PAN SHOALS BUOY. THE SYNOPTIC SW FLOW HAS REESTABLISHED ITSELF OVER MOST OTHER AREAS WITH THE SEABREEZE NOW PRODUCING SOLID 15 KT WINDS NEARSHORE WITH A FEW GUSTS NOW RECORDED OVER 20 KNOTS AT COASTAL MESONET SITES. AN INDISTINCT BOUNDARY SOMEWHERE ACROSS THE EASTERN CAROLINAS WILL BECOME MORE DISTINCT OVERNIGHT AS IT LIKELY FOCUSES CONVECTION ALONG IT. BY MORNING THE FRONT SHOULD BE IN THE MYRTLE BEACH VICINITY. ALTHOUGH THE FRONT WILL RETURN NORTH DURING THE DAY SUNDAY...EXPECT TO SEE WINDS SHIFT YET AGAIN LATE SUNDAY NIGHT. MONDAY THROUGH WEDNESDAY WILL SEE GENERALLY EASTERLY FLOW WITH THE FRONT FINALLY SOUTH OF THE FORECAST AREA. BY THURSDAY AND FRIDAY...A CLIMATOLOGICALLY FAVORED SOUTHERLY FLOW WILL REDEVELOP WITH HIGH PRESSURE OFFSHORE. ASIDE FROM OCCASIONAL SEABREEZE-INDUCED GUSTS NEARSHORE AROUND 20 KNOTS THROUGH THIS EVENING AND AGAIN SUNDAY AFTERNOON/EVENING... WINDS THROUGHOUT THE PERIOD SHOULD REMAIN 15 KT OR LESS. SEAS WILL BE HIGHEST THROUGH SUNDAY...THEN FALL TO 2-3 FT THROUGH THE REMAINDER OF THE PERIOD WITH GENERALLY LIGHTER FLOW EXPECTED. && .ILM WATCHES/WARNINGS/ADVISORIES... NC...NONE. SC...NONE. MARINE...NONE. && SHORT/LONG TERM...31 AVIATION...05 MARINE...09
Hazardous weather outlook, May 20, 3:40 PM EDT, 2 hours 23 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE WILMINGTON NC 340 PM EDT SAT MAY 20 2006 NCZ087-096-097-099>101-SCZ017-023-024-032>034-039-046-210830- ROBESON-BLADEN-PENDER-COLUMBUS-BRUNSWICK-NEW HANOVER-MARLBORO- DARLINGTON-DILLON-FLORENCE-MARION-HORRY-WILLIAMSBURG-GEORGETOWN- 340 PM EDT SAT MAY 20 2006 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST NORTH CAROLINA AND NORTHEAST SOUTH CAROLINA. .DAY ONE...TODAY AND TONIGHT A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 11 PM. STRONG THUNDERSTORMS ARE EXPECTED TO MOVE INTO THE AREA FROM THE NORTHWEST THROUGH THE EVENING HOURS. A FEW OF THE STRONGER CELLS WILL BE CAPABLE OF PRODUCING WIND GUSTS UP TO 60 MPH AND HAIL TO THE SIZE OF QUARTERS. STAY TUNED FOR ANY WARNINGS FROM THE NATIONAL WEATHER SERVICE OFFICE IN WILMINGTON. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS REQUESTED. AMZ250-252-254-256-210830- SURF CITY TO CAPE FEAR NC OUT 20 NM- CAPE FEAR NC TO LITTLE RIVER INLET SC OUT 20 NM- LITTLE RIVER INLET TO MURRELLS INLET SC OUT 20 NM- MURRELLS INLET TO SOUTH SANTEE RIVER SC OUT 20 NM- 340 PM EDT SAT MAY 20 2006 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF THE ADJACENT COASTAL WATERS. .DAY ONE...TODAY AND TONIGHT A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 11 PM. STRONG THUNDERSTORMS ARE EXPECTED TO MOVE INTO THE AREA FROM THE NORTHWEST THROUGH THE EVENING HOURS. A FEW OF THE STRONGER CELLS WILL BE CAPABLE OF PRODUCING WIND GUSTS UP TO 60 MPH AND HAIL TO THE SIZE OF QUARTERS. STAY TUNED FOR ANY WARNINGS FROM THE NATIONAL WEATHER SERVICE OFFICE IN WILMINGTON. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED. 05
In the hours before
Special weather statement, May 20, 5:47 PM EDT, 16 minutes before
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</html>The office that day
Everything else NWS Wilmington, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 20, 7:12 PM EDT | Severe Thunderstorm Warning | ILM | Horry | 48 min |
| May 20, 7:15 PM EDT | Severe Thunderstorm Warning | ILM | Florence, Marion | 39 min |
Nearby
Severe Thunderstorm Warnings in South Carolina, 2006Every severe thunderstorm warning in 2006
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.