Alert archive / South Carolina / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 11, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Mar 31, 2002, 1:55 PM EST for Union County, South Carolina. It was in force for 35 min. 1 report 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
- Mar 31, 2002, 1:55 PM EST (18:55 UTC)
- Expired
- Mar 31, 2002, 2:30 PM EST
- In force
- 35 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Whole counties
County Union County, SC
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 31, 2:15 PM EST | Hail 1 | Monarch Mills, SC |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 6.9 hours before the alert went out and 220 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
- 472 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 132 m²/s²
- 0-3 km storm-relative helicity
- 230 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS52 KGSP 311855 SVRGSP SCC087-311930- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 155 PM EST SUN MAR 31 2002 THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHEASTERN UNION COUNTY IN UPSTATE SOUTH CAROLINA * UNTIL 230 PM EST * AT 155 PM EST...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE HAIL AND DAMAGING WINDS OVER UNION...MOVING NORTHEAST AT 35 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... ADAMSBURG AT 200 PM EST. PEOPLE IN THE PATH OF THIS SEVERE THUNDERSTORM SHOULD BE ALERT FOR LARGE HAIL AND DAMAGING WINDS. FREQUENT LIGHTNING AND LOCALLY HEAVY RAIN CAN OCCUR WITH ANY THUNDERSTORM. $$ MCAVOY
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 Greenville-Spartanburg, SC wrote its last area forecast discussion before this severe thunderstorm warning went out at Mar 31, 10:40 AM EST, 3 hours 15 minutes earlier.
Area forecast discussion, Mar 31, 10:40 AM EST, 3 hours 15 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 1040 AM EST SUN MAR 31 2002 NOT A BAD LOOKING SETUP FOR SOME SEVERE LATER THIS AFTERNOON. SFC BNDRY CURRENTLY DRAPED ACROSS THE NC/SC BORDER. IF ANYTHING...THIS BNDRY HAS BEEN MOVING A LITTLE SOUTH THE PAST COUPLE HOURS. 12 UTC FFC SOUNDING HAD A 21 DEG TEMP DELTA FROM H7 TO H5...THOUGH THE SOUNDING WAS RATHER CAPPED. WE WL BE IN THE ENTRANCE REGION OF A 60 KT H5 JET LATER THIS AFTN...WITH A DEEP AREA OF GOOD UPPER DIVERGENCE AHEAD OF THE SRN STREAM VORT AS IT SHEARS OUT. BY 00 UTC...COUPLED JET CIRCULATION ALSO DEVELOPS OVER THE REGION. NOT SURE IF ANYTHING WL ACTUALLY DEVELOP ON THE WARM FRONT...BUT IF IT DOES...THE POTENTIAL WOULD EXISTS FRO A FEW SUPERCELLS WITH HIGH HELICITY ALONG THE FRONT. MORE LIKELY...MCS WL DEVELOP ALONG SFC BNDRY AND RAPIDLY TRANSLATE E INTO CWA BY LATE AFTN. WITH THE STEEP LAPSE RATES AND DWPT RECOVERY INTO THE L-M60S BY LATE AFTN...THINK THE SC AND SRN NC PIEDMONT STAND A GOOD CHANCE TO SEE SOME DAMAGING WINDS AND HAIL. FCSTID = 14 GSP 70 45 67 45 / 90 70 0 0 AND 72 46 68 46 / 90 70 0 0 CLT 65 47 66 44 / 90 70 0 0 HKY 59 46 65 42 / 90 60 0 0 AVL 64 43 60 39 / 90 60 0 10 .GSP... GA...NONE. NC...NONE. SC...NONE. MCAVOY
In the hours before
Special weather statement, Mar 31, 11:52 AM EST, 2 hours 3 minutes before
GAZ010-017-018-026-028-029-NCZ033>037-048>059-062>072-082-SCZ001>014- 019-312100- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 1152 AM EST SUN MAR 31 2002 ...A FEW SEVERE THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON AND EVENING... LOW PRESSURE WILL MOVE FROM THE GULF STATES INTO THE WESTERN CAROLINAS THIS EVENING. THE ATMOSPHERE AHEAD OF THE LOW PRESSURE AREA IS MODERATELY UNSTABLE AND IS FAVORABLE FOR THE DEVELOPMENT OF THUNDERSTORMS. A FEW OF THESE STORMS COULD BE SEVERE ACROSS THE WESTERN CAROLINAS AND EXTREME NORTHEAST GEORGIA...ESPECIALLY NEAR AND TO THE SOUTH OF A LINE FROM CLARKESVILLE GEORGIA...TO GREENVILLE SOUTH CAROLINA...TO STATESVILLE NORTH CAROLINA. WHILE THE MAIN THREATS WITH THESE STORMS WILL BE DAMAGING WINDS AND HAIL...ISOLATED TORNADOES ARE ALSO POSSIBLE. IN ADDITION...LOCALIZED FLOODING COULD QUICKLY DEVELOP FROM HEAVY RAINFALL ASSOCIATED WITH THESE THUNDERSTORMS...PARTICULARLY IN THE NORTH CAROLINA MOUNTAINS. ALL INTERESTS SHOULD BE AWARE OF THIS POTENTIAL FOR SEVERE WEATHER AND KEEP POSTED ON WEATHER STATEMENTS...WATCHES...OR WARNINGS WHICH MAY BE ISSUED BY THE NATIONAL WEATHER SERVICE. BE PREPARED TO TAKE QUICK ACTION IF THREATENING WEATHER IS SIGHTED OR A WARNING IS ISSUED FOR YOUR AREA. SPOTTER GROUPS SHOULD BE PREPARED TO ACTIVATE QUICKLY LATE THIS AFTERNOON. DISPATCHERS SHOULD ENSURE COUNTY EMERGENCY PREPAREDNESS OFFICIALS ARE AWARE OF THIS INFORMATION. HANDEL
The office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 31, 2:17 PM EST | Severe Thunderstorm Warning | GSP | York | 43 min |
| Mar 31, 2:24 PM EST | Tornado Warning | GSP | York | 36 min |
| Mar 31, 2:47 PM EST | Severe Thunderstorm Warning | GSP | Chester | 43 min |
Nearby
Severe Thunderstorm Warnings in South Carolina, 2002Every severe thunderstorm warning in 2002
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.