Alert archive / South Carolina / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 108, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Apr 28, 2011, 3:09 AM EDT for Greenwood County, Laurens County, South Carolina. It was in force for 36 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Apr 28, 2011, 3:09 AM EDT (07:09 UTC)
- Expired
- Apr 28, 2011, 3:45 AM EDT
- In force
- 36 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Storm-based polygon
Counties Greenwood County, SC, Laurens County, SC
The radar
The Columbia radar (KCAE), 82 km from the middle of the area, began a volume at 07:08 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 |
|---|---|---|---|
| Apr 28, 3:10 AM EDT | HAIL 0.75 | Callison, SC |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 28, 12:56 AM EDT | Tornado Watch | SPC | 4 hr |
The nearest sounding before it
Charleston AFB, SC (KCHS), launched 00:00Z, 7.2 hours before the alert went out and 230 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
- 1949 J/kg
- Mixed-layer CIN
- -19 J/kg
- Mixed-layer LCL
- 686 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 104 m²/s²
- 0-3 km storm-relative helicity
- 101 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 5.7
The text
As transmitted, in the capitals the NWS used until 2016.
320
WUUS52 KGSP 280709
SVRGSP
SCC047-059-280745-
/O.NEW.KGSP.SV.W.0108.110428T0709Z-110428T0745Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
309 AM EDT THU APR 28 2011
THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHERN GREENWOOD COUNTY IN UPSTATE SOUTH CAROLINA...
SOUTH CENTRAL LAURENS COUNTY IN UPSTATE SOUTH CAROLINA...
* UNTIL 345 AM EDT
* AT 306 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 3 MILES
NORTHWEST OF CALLISON...OR 10 MILES SOUTH OF GREENWOOD...MOVING
NORTHEAST AT 55 MPH.
* LOCATIONS IMPACTED INCLUDE...
NINETY SIX...
DYSON...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH IS IN EFFECT FOR THE WARNED AREA. SEVERE
THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE
OR NO ADVANCE WARNING. SEEK SHELTER IN AN INTERIOR ROOM ON THE LOWEST
LEVEL OF A HOUSE OR OTHER STURDY STRUCTURE IF A TORNADO IS SPOTTED.
TO REPORT DAMAGING WINDS...LARGE HAIL...OR FLOODING...THROUGH OUR
AUTOMATED REPORTING SYSTEM...CALL OUR TOLL FREE NUMBER...
1 8 7 7...6 3 3...6 7 7 2.
&&
LAT...LON 3396 8205 3398 8205 3397 8217 3401 8225
3409 8225 3441 8181 3438 8177 3436 8178
3430 8189 3422 8192 3421 8194 3418 8190
3413 8187 3395 8202
TIME...MOT...LOC 0709Z 232DEG 55KT 3407 8211
$$
MOORE1 follow-up statement
606
WWUS52 KGSP 280723 RRA
SVSGSP
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
323 AM EDT THU APR 28 2011
SCC059-280733-
/O.CAN.KGSP.SV.W.0108.000000T0000Z-110428T0745Z/
LAURENS SC-
323 AM EDT THU APR 28 2011
...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL LAURENS COUNTY
IS CANCELLED...
THE THUNDERSTORM WILL REMAIN TO THE SOUTH OF LAURENS COUNTY. ANOTHER
THUNDERSTORM IN THE MIDDLE OF LAURENS COUNTY COULD CONTINUE TO
DEVELOP AND BECOME SEVERE BY 345 AM.
LAT...LON 3396 8205 3398 8205 3397 8217 3401 8225
3410 8219 3421 8194 3418 8190 3413 8187
3395 8202
TIME...MOT...LOC 0723Z 232DEG 55KT 3412 8192
$$
SCC047-280745-
/O.CON.KGSP.SV.W.0108.000000T0000Z-110428T0745Z/
GREENWOOD SC-
323 AM EDT THU APR 28 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 AM EDT
FOR SOUTHEASTERN GREENWOOD COUNTY...
AT 319 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS
LOCATED 6 MILES SOUTHWEST OF DYSON...OR 13 MILES SOUTHEAST OF
GREENWOOD...MOVING NORTHEAST AT 55 MPH.
THE SEVERE THUNDERSTORM WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS
OF THE INDICATED COUNTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH IS IN EFFECT FOR THE WARNED AREA. SEVERE
THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE
OR NO ADVANCE WARNING. SEEK SHELTER IN AN INTERIOR ROOM ON THE LOWEST
LEVEL OF A HOUSE OR OTHER STURDY STRUCTURE IF A TORNADO IS SPOTTED.
&&
LAT...LON 3396 8205 3398 8205 3397 8217 3401 8225
3410 8219 3421 8194 3418 8190 3413 8187
3395 8202
TIME...MOT...LOC 0723Z 232DEG 55KT 3412 8192
$$
MOOREWhat 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 Greenville-Spartanburg, SC wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 28, 2:44 AM EDT, 25 minutes earlier.
Area forecast discussion, Apr 28, 2:44 AM EDT, 25 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
244 AM EDT THU APR 28 2011
.SYNOPSIS...
LOW PRESSURE WILL MOVE FROM THE MISSISSIPPI RIVER VALLEY TO THE
GREAT LAKES TONIGHT...DRAGGING A COLD FRONT TOWARD THE SOUTHERN
APPALACHIANS. THE FRONT WILL CROSS THE AREA EARLY TOMORROW MORNING.
HIGH PRESSURE WILL THEN RETURN ON FRIDAY AND LINGER THROUGH
SUNDAY...WITH ANOTHER COLD FRONT ARRIVING FROM THE NORTHWEST EARLY
NEXT WEEK.
&&
.NEAR TERM /UNTIL 6 PM THIS EVENING/...
AS OF 240 AM...THE NC MTN COUNTIES OF SWAIN/MACON...AND THE NE GA
MTN COUNTIES OF RABUN/HABERSHAM HAVE BEEN CLEARED FROM WW248.
LATER THIS MORNING...THE PRE-FRONTAL DEEP CONVECTION AND COLD FRONT
WILL PUSH EAST OF THE CWFA SHORTLY AFTER SUNRISE. DRY AIR WILL
INCREASE ACROSS THE FORECAST AREA THROUGH THE MORNING...DROPPING
POPS TO NEAR ZERO. GUSTY WEST-SOUTHWEST WINDS WILL REDEVELOP BY MID-
DAY AND CONTINUE THROUGH THE AFTERNOON. DOWNSLOPE FLOW AND
INCREASING INSOLATION WILL ALLOW TEMPS TO PEAK AROUND 5 DEGREES
ABOVE NORMAL.
TONIGHT...ADDITIONAL ENERGY WILL ROTATE THRU THRU BASE OF EASTWARD
TRANSLATING EASTERN CONUS L/WV...BUT DRY AIR THRU A DEEP LAYER WILL
RESULT IN SKIES REMAINING CLEAR. WITHIN LINGERING MIXING AND WEAK
LLVL CAA REGIME FRIDAY MORNING MIN TEMPS WILL AVERAGE ABOUT A
CATEGORY BELOW CLIMO.
&&
.SHORT TERM /6 PM THIS EVENING THROUGH SATURDAY/...
AS OF 2 AM THURSDAY...A TRAILING UPPER WAVE WILL CROSS THE NRN TIER
OF THE FORECAST AREA ON FRIDAY...WITH LIMITED MOISTURE. RIDGING WILL
THEN BUILD IN FROM THE WEST ON SATURDAY. OTHER THAN BRIEF NRN TIER
CLOUDS...EXPECT MOSTLY CLEAR CONDITIONS THROUGH THE PERIOD WITH
SEASONABLE MAX TEMPS ON FRI...INCREASING TO A CATEGORY ABOVE NORMAL
ON SAT. DRY AIRMASS ALONG WITH LIGHT OVERNIGHT WINDS...WILL PROMOTE
IDEAL RADIATIONAL COOLING. SCATTERED FROST LOOKS LIKE A GOOD BET FRI
NIGHT IN MANY MOUNTAIN VALLEY LOCATIONS IN NC WITH LOWS IN THE MID
TO UPPER 30S THERE. GENERALLY USED A MOS BLEND FOR TEMPS THROUGH THE
PERIOD.
&&
.LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/...
AS OF 2 AM THURSDAY...NO SIGNIFICANT CHANGES ARE EXPECTED FROM THE
PREVIOUS PACKAGE. THE H5 RIDGE OVER THE REGION WILL MIGRATE OFFSHORE
SUNDAY. A COLD FRONT WILL APPROACH FROM THE NW ON MONDAY...STALL
ACROSS THE REGION TUESDAY AND THEN SLIP SOUTHEAST OF THE AREA ON
WEDNESDAY. THE BEST POPS WILL BE CENTERED AROUND MON NIGHT THROUGH
TUE. ABOVE NORMAL TEMPS SUN AND MON WILL FALL BELOW NORMAL TUE AND
WEDNESDAY.
&&
.AVIATION /07Z THURSDAY THROUGH MONDAY/...
AT KCLT AND ELSEWHERE...VERY GUSTY SOUTHERLY WINDS WILL REMAIN IN
PLACE AHEAD OF AND COINCIDENT WITH APPROACHING LINE OF STG TO SVR
TSTMS...WHICH SHOULD BE EAST OF CLT BEFORE 11 UTC. ANY CIG
REDUCTIONS TO MVFR EARLY THIS MORNING WILL QUICKLY IMPROVE AFTER
SUNRISE BUT GUSTY SW WINDS SHOULD LINGER UNTIL MIDDAY BEFORE VEERING
AND LESS GUSTY CONDITIONS SPREAD IN DURING THE LATE AFTERNOON.
OUTLOOK...QUIET WX IS EXPECTED FRIDAY THRU SUNDAY.
&&
.GSP WATCHES/WARNINGS/ADVISORIES...
GA...LAKE WIND ADVISORY UNTIL 7 AM EDT THIS MORNING FOR GAZ010-017-
018-026-028-029.
NC...LAKE WIND ADVISORY UNTIL 7 AM EDT THIS MORNING FOR NCZ033-
035>037-048>053-056>059-062>065-068>072-082-501>510.
SC...LAKE WIND ADVISORY UNTIL 7 AM EDT THIS MORNING FOR SCZ001>014-
019.
&&
SYNOPSIS...JPT
NEAR TERM...CSH
SHORT TERM...HG
LONG TERM...HG
AVIATION...ARK/CSHHazardous weather outlook, Apr 28, 3:02 AM EDT, 7 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 302 AM EDT THU APR 28 2011 GAZ018-026-028-029-NCZ033-035>037-048>050-052-053-056-057-059- 063>065-068>072-082-501>510-SCZ001>014-019-290715- STEPHENS-FRANKLIN-HART-ELBERT-AVERY-ALEXANDER-IREDELL-DAVIE-MADISON- YANCEY-MITCHELL-HAYWOOD-BUNCOMBE-CATAWBA-ROWAN-NORTHERN JACKSON- SOUTHERN JACKSON-TRANSYLVANIA-HENDERSON-CLEVELAND-LINCOLN-GASTON- MECKLENBURG-CABARRUS-UNION NC-CALDWELL MOUNTAINS-GREATER CALDWELL- BURKE MOUNTAINS-GREATER BURKE-MCDOWELL MOUNTAINS-EASTERN MCDOWELL- RUTHERFORD MOUNTAINS-GREATER RUTHERFORD-POLK MOUNTAINS-EASTERN POLK- OCONEE MOUNTAINS-PICKENS MOUNTAINS-GREENVILLE MOUNTAINS- GREATER OCONEE-GREATER PICKENS-GREATER GREENVILLE-SPARTANBURG- CHEROKEE-YORK-ANDERSON-ABBEVILLE-LAURENS-UNION SC-CHESTER-GREENWOOD- 302 AM EDT THU APR 28 2011 ...LAKE WIND ADVISORY IN EFFECT UNTIL 7 AM EDT THIS MORNING... ...TORNADO WATCH 248 IN EFFECT UNTIL 8 AM EDT THIS MORNING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA...PIEDMONT NORTH CAROLINA...WESTERN NORTH CAROLINA AND UPSTATE 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. LAKE WIND ADVISORY. TORNADO WATCH. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SKYWARN SPOTTERS ARE REQUESTED TO FORWARD ANY REPORTS OF LARGE HAIL...DAMAGING WINDS...TORNADOES OR FLASH FLOODING TO OUR OFFICE. GAZ010-017-NCZ051-058-062-290715- RABUN-HABERSHAM-SWAIN-GRAHAM-MACON- 302 AM EDT THU APR 28 2011 ...LAKE WIND ADVISORY IN EFFECT UNTIL 7 AM EDT THIS MORNING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA AND WESTERN NORTH 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. LAKE WIND ADVISORY. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... NONE.
In the hours before
Local storm report, Apr 28, 2:02 AM EDT, 1 hour 7 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
202 AM EDT THU APR 28 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0150 AM TSTM WND DMG LITTLE RIVER 35.24N 82.63W
04/28/2011 TRANSYLVANIA NC COUNTY OFFICIAL
TREES AND POWER LINES DOWN.
&&
HGLocal storm report, Apr 28, 2:06 AM EDT, 1 hour 3 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
206 AM EDT THU APR 28 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0156 AM FUNNEL CLOUD HENDERSONVILLE 35.32N 82.46W
04/28/2011 HENDERSON NC PUBLIC
PUBLIC REPORTS FUNNEL CLOUD
&&
KRENTZSpecial weather statement, Apr 28, 2:06 AM EDT, 1 hour 3 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
206 AM EDT THU APR 28 2011
GAZ029-SCZ010-011-019-280645-
ABBEVILLE-ANDERSON-ELBERT-GREENWOOD-
206 AM EDT THU APR 28 2011
...A STRONG THUNDERSTORM WILL AFFECT ABBEVILLE...ELBERT...
NORTHWESTERN GREENWOOD AND SOUTHEASTERN ANDERSON COUNTIES THROUGH 245
AM EDT...
AT 203 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR RUCKERSVILLE...OR 7 MILES NORTHEAST OF
ELBERTON...MOVING NORTHEAST AT 50 MPH.
OTHER STRONG TO SEVERE THUNDERSTORMS WERE MOVING QUICKLY NORTHEAST
ACROSS NORTHEAST GEORGIA AND MAY AFFECT ELBERT...ABBEVILLE...AND
GREENWOOD COUNTIES BY 3 AM.
PEOPLE IN ABBEVILLE...ELBERT...NORTHWESTERN GREENWOOD AND
SOUTHEASTERN ANDERSON COUNTIES...INCLUDING THE FOLLOWING LOCATIONS...
RUCKERSVILLE...LOWNDESVILLE...IVA...SECESSION LAKE...ANTREVILLE AND
HONEA PATH...
SHOULD MONITOR THE WEATHER SITUATION CLOSELY. LISTEN FOR POSSIBLE
WARNINGS AND BE PREPARED TO TAKE APPROPRIATE ACTION SHOULD SEVERE
WEATHER THREATEN.
SMALL HAIL...AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS
STORM.
LAT...LON 3398 8266 3397 8277 3408 8300 3421 8294
3426 8287 3429 8278 3432 8278 3457 8242
3449 8232 3435 8217 3433 8217 3430 8209
3406 8230 3405 8242 3407 8253 3401 8259
3397 8258Local storm report, Apr 28, 2:33 AM EDT, 36 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
233 AM EDT THU APR 28 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0220 AM TSTM WND DMG 4 NE DANA 35.37N 82.33W
04/28/2011 HENDERSON NC COUNTY OFFICIAL
TREES AND POWER LINES DOWN
&&
HGLocal storm report, Apr 28, 2:34 AM EDT, 35 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
234 AM EDT THU APR 28 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1115 PM TORNADO MOUNTAIN CITY 34.92N 83.39W
04/27/2011 RABUN GA AMATEUR RADIO
FIRE STATION SEVERELY DAMAGED.
&&
HGLocal storm report, Apr 28, 3:00 AM EDT, 9 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
300 AM EDT THU APR 28 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1112 PM TORNADO MOUNTAIN CITY 34.92N 83.39W
04/27/2011 RABUN GA TRAINED SPOTTER
HAM RADIO OPERATOR RELAYED A REPORT OF SEVERAL HOUSES
DESTROYED.
&&
KRENTZThe office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 27, 11:22 PM EDT | Tornado Warning | GSP | Oconee, Pickens | 38 min |
| Apr 28, 12:04 AM EDT | Tornado Warning | GSP | Oconee | 41 min |
| Apr 28, 12:21 AM EDT | Tornado Warning | GSP | Oconee | 39 min |
| Apr 28, 12:54 AM EDT | Tornado Warning | GSP | Oconee, Pickens | 51 min |
| Apr 28, 1:31 AM EDT | Tornado Warning | GSP | Greenville, Oconee, Pickens | 44 min |
| Apr 28, 2:06 AM EDT | Special Weather Statement | GSP | Abbeville | 39 min |
| Apr 28, 2:29 AM EDT | Severe Thunderstorm Warning | GSP | Abbeville, Greenwood | 46 min |
Nearby
Severe Thunderstorm Warnings in South Carolina, 2011Every severe thunderstorm warning in 2011
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.