Alert archive / North Carolina / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 102, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Aug 21, 1990, 1:52 PM EDT for Mecklenburg County, North Carolina. It was in force for 38 min.
The area
The counties it named.
The facts
- Issued
- Aug 21, 1990, 1:52 PM EDT (17:52 UTC)
- Expired
- Aug 21, 1990, 2:30 PM EDT
- In force
- 38 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Whole counties
County Mecklenburg County, NC
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 5.9 hours before the alert went out and 125 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
- 211 J/kg
- Mixed-layer CIN
- -130 J/kg
- Mixed-layer LCL
- 550 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 118 m²/s²
- 0-3 km storm-relative helicity
- 153 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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.
In the hours before
Special weather statement, Aug 21, 8:44 AM EDT, 5 hours 8 minutes before
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</html>Special weather statement, Aug 21, 12:07 PM EDT, 1 hour 45 minutes before
SCZ001>004-211800- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC 1205 PM EDT TUE AUG 21 1990 ...A FEW SEVERE THUNDERSTORMS AND LOCALLY HEAVY RAINFALL POSSIBLE IN THE UPSTATE THIS AFTERNOON AND EVENING... THE AIRMASS OVER THE UPSTATE IS VERY MOIST...QUITE UNSTABLE...AND THERE APPEARS TO BE SUFFICIENT FOCUS FOR SIGNIFICANT THUNDERSTORM DEVELOPMENT THIS AFTERNOON. A FEW OF THE THUNDERSTORMS COULD BECOME SEVERE...MEANING THEY WOULD PRODUCE HAIL THE SIZE OF DIMES OR LARGER...AND/OR WINDS OF ABOUT 60 MPH OR HIGHER. IN ADDITION...THE WIND FIELDS IN THE MIDDLE AND UPPER ATMOSPHERE ARE VERY WEAK MEANING THAT THUNDERSTORMS COULD DUMP LARGE AMOUNTS OF RAIN VERY QUICKLY OVER SMALL AREAS. LOCAL FLOODING PROBLEMS COULD RESULT...ESPECIALLY IN URBAN AREAS AND AREAS WITH POOR DRAINAGE. THE FEW STORMS WHICH DEVELOPED YESTERDAY AFTERNOON CONTAINED QUITE A BIT OF CLOUD TO GROUND LIGHTNING...WHICH CAUSES A NUMBER OF INJURIES AND DEATHS EACH YEAR. PEOPLE IN THE UPSTATE SHOULD HEED THE VARIOUS THUNDERSTORM SAFETY RULES TODAY AS STORMS DEVELOP OR APPROACH...AND LISTEN FOR LATER INFORMATION AS DEVELOPMENT OCCURS. JONES
Special weather statement, Aug 21, 12:55 PM EDT, 57 minutes before
NCZ008-007-211900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHARLOTTE NC 1255 PM EDT TUE AUG 21 1990 ...A FEW SEVERE THUNDERSTORMS POSSIBLE TODAY OVER THE SOUTHERN PIEDMONT AND NORTHERN FOOTHILLS OF NORTH CAROLINA... A COLD FRONT STALLED OVER THE SOUTHERN PIEDMONT TODAY WILL BE THE FOCUS OF SHOWERS AND THUNDERSTORMS THROUGHOUT THE REGION THIS AFTERNOON AND EVENING. WARM AND QUITE UNSTABLE AIR ALONG THE FRONT MAY CAUSE SOME OF THE THUNDERSTORMS TO BE SEVERE. ANY STORMS THAT FORM THIS AFTERNOON WILL BE MOVING SLOWLY SO LOCALIZED FLOODING IS POSSIBLE ON ROADS AND IN LOW LYING AREAS AND ALSO NEAR STREAMS. BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS AND BE PREPARED TO SEEK SHELTER ON HIGHER GROUND IF NECESSARY. REMEMBER SEVERE THUNDERSTORMS CAN PRODUCE 3/4 INCH HAIL OR LARGER AND MAY BE ACCOMPANIED BY WINDS OF 58 MPH OR GREATER. MONITOR TV...RADIO...OR NOAA WEATHER RADIO FOR THE LATEST STATEMENTS OR POSSIBLE WARNINGS. THE NEXT STATEMENT WILL BE ISSUED AROUND 245PM IF CONDITIONS WARRANT. STEWART
The office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 21, 2:28 PM EDT | Severe Thunderstorm Warning | GSP | Burke, McDowell | 62 min |
| Aug 21, 2:40 PM EDT | Severe Thunderstorm Warning | GSP | Stanly | 35 min |
| Aug 21, 2:49 PM EDT | Severe Thunderstorm Warning | GSP | Cherokee | 56 min |
| Aug 21, 2:56 PM EDT | Severe Thunderstorm Warning | GSP | Catawba, Lincoln | 34 min |
| Aug 21, 3:20 PM EDT | Severe Thunderstorm Warning | GSP | Buncombe, Henderson | 55 min |
| Aug 21, 3:50 PM EDT | Severe Thunderstorm Warning | GSP | Cleveland | 40 min |
| Aug 21, 4:00 PM EDT | Severe Thunderstorm Warning | GSP | Polk | 60 min |
| Aug 21, 4:10 PM EDT | Severe Thunderstorm Warning | GSP | Macon, Swain | 65 min |
| Aug 21, 4:14 PM EDT | Flash Flood Warning | GSP | Buncombe, Henderson | 3 hr |
| Aug 21, 4:14 PM EDT | Severe Thunderstorm Warning | GSP | Buncombe, Henderson | 61 min |
| Aug 21, 4:29 PM EDT | Flash Flood Warning | GSP | Burke, Polk, Rutherford | 3 hr |
| Aug 21, 4:29 PM EDT | Flash Flood Warning | GSP | Haywood, Transylvania | 3 hr |
| Aug 21, 4:29 PM EDT | Flash Flood Warning | GSP | Cherokee | 3 hr |
| Aug 21, 5:09 PM EDT | Severe Thunderstorm Warning | GSP | Gaston | 66 min |
| Aug 21, 4:27 PM EDT | Severe Thunderstorm Warning | GSP | Union | 41 min |
| Aug 21, 5:31 PM EDT | Severe Thunderstorm Warning | GSP | Cherokee | 44 min |
| Aug 21, 5:44 PM EDT | Flash Flood Warning | GSP | Laurens | 3 hr |
Nearby
Severe Thunderstorm Warnings in North Carolina, 1990Every severe thunderstorm warning in 1990
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.