Alert archive / North Carolina / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 39, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at May 1, 1990, 5:14 PM EDT for Graham County, Swain County, North Carolina. It was in force for 61 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
- May 1, 1990, 5:14 PM EDT (21:14 UTC)
- Expired
- May 1, 1990, 6:15 PM EDT
- In force
- 61 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Whole counties
Counties Graham County, NC, Swain County, NC
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 1, 5:30 PM EDT | Thunderstorm Wind 0 | Graham, NC |
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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Athens Municipal, GA (KAHN), launched 12:00Z, 9.2 hours before the alert went out and 167 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
- 870 J/kg
- Mixed-layer CIN
- -193 J/kg
- Mixed-layer LCL
- 1111 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -82 m²/s²
- 0-3 km storm-relative helicity
- -178 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KAVL 012114
SVRAVL
NCC075-173-012215-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ASHEVILLE NC
514 PM EDT TUE MAY 1 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 615 PM EDT FOR PEOPLE IN THE FOLLOWING
COUNTIES
IN THE STATE OF NORTH CAROLINA
GRAHAM...SWAIN
AT 508 PM NATIONAL WEATHER SERVICE RADAR SHOWED A SEVERE THUNDER-
STORM IN MONROE COUNTY TENNESSEE MOVING EAST AT 40 MILES AN HOUR.
THIS STORM WILL MOVE INTO GRAHAM AND SWAIN COUNTIES WITHIN THE
NEXT FEW MINUTES.
IF YOU ARE CAUGHT OUTSIDE, SEEK SHELTER FROM THE WEATHER IN A
STRONG BUILDING. DAMAGING WIND, LARGE HAIL, VERY HEAVY {RAIN AND
DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. STAY
INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
SLUDERWhat 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, May 1, 12:00 PM EDT, 5 hours 14 minutes before
SCZ001>004-011800 SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREER SC 1159 AM EDT TUE MAY 1 1990 ...HOT SUMMER LIKE WEATHER SETTLES OVER THE UPSTATE... TEMPERATURES WERE CLIMBING SHARPLY DURING THE MORNING HOURS IN NORTHWESTERN SOUTH CAROLINA...AND RECORD HIGH TEMPERATURES ARE POSSIBLE THIS AFTERNOON. AT THE GREENVILLE SPARTANBURG AIRPORT THE RECORD HIGH FOR THE 1ST DAY OF MAY IS 89 DEGREES ...AND THE FORECAST CALLS FOR A HIGH TODAY IN THE LOW 90S. THE ATMOSPHERE WILL BECOME VERY UNSTABLE WITH THE AFTERNOON HEATING...THUS PRODUCING SCATTERED THUNDERSTORMS. A FEW UPSTATE COMMUNITIES MAY EXPERIENCE A POSSIBLE SEVERE THUNDERSTORM... WITH STRONG GUSTY WIND...AND HAIL...LATER THIS A/FTERNOON OR EVENING. YOU MAY WISH TO CHECK NOAA WEATHER RADIO OFTEN TODAY FOR THE LATEST STATEMENTS OR BULLETINS. MUSGROVE
Special weather statement, May 1, 3:38 PM EDT, 1 hour 36 minutes before
NCZ007-009-010-011-012-012230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ASHEVILLE NC 345 PM EDT TUE MAY 01 1990 ...A SEVERE THUNDERSTORM WATCH IN EFFECT FOR MOST OF WESTERN NORTH CAROLINA UNTIL 9 PM... AT 330 PM NATIONAL WEATHER SERVICE RADAR SHOWS A LINE OF THUNDERSTORMS IN EASTERN TENNESSEE JUST WEST OF KNOXVILLE MOVING TOWARD THE EAST AT ABOUT 40 MILES AN HOUR. THESE STORMS ARE EXPECTED TO MOVE INTO EXTREME WESTERN NORTH CAROLINA LATER THIS AFTERNOON AND EVENING. SOME OF THE HEAVIER STORMS MAY PRODUCE HAIL AND DAMAGING WINDS. IF YOU ARE IN THE PATH OF ONE OF THESE STORMS..TAKE SLELTER UNTIL IT PASSES. STAY TUNED TO THE NATIONAL WEATHER SERVICE RADIO FOR THE LATEST STATEMENTS AND WARNINGS. YOU WILL HEAR IT FIRST ON THE NATIONAL WEATHER SERVICE RADIO. THE NEXT STATEMENT WILL BE ISSUED AROUND 6 PM. OS
Special weather statement, May 1, 5:07 PM EDT, 7 minutes before
NCZ007-012200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHARLOTTE NC 500 PM EDT TUE MAY 01 1990 ... A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR MUCH OF WESTERN NORTH CAROLINA INCLUDING CATAWBA COUNTY UNTIL 9 PM EDT ... AT 5 PM ... CHARLOTTE WEATHER RADAR SHOWED SHOWERS AND THUNDERSTORMS WITH VERY HEAVY RAIN COVERING MUCH OF WESTERN NORTH CAROLINA. THESE VERY ACTIVE THUNDERSTORMS REACHED FROM NEAR ASHEVILLE NORTHEASTWARD TO JUST WEST OF GREENSBORO. ALL THE PRECIPITATION WAS MOVING TOWARD THE EAST BETWEEN 30 AND 40 MPH. EVERYONE IN AND NEAR THE WATCH AREA SHOULD REMAIN ALERT FOR POSSIBLE WARNINGS OR REPORTS OF SEVERE WEATHER. THE NEXT STATEMENT WILL BE ISSUED BY THIS OFFjICE JUST BEFORE 7 PM EDT. CLARK
The office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 1, 5:02 PM EDT | Severe Thunderstorm Warning | GSP | Avery | 58 min |
| May 1, 5:24 PM EDT | Severe Thunderstorm Warning | GSP | Polk, Rutherford | 66 min |
| May 1, 5:32 PM EDT | Severe Thunderstorm Warning | GSP | Cherokee | 58 min |
| May 1, 6:18 PM EDT | Severe Thunderstorm Warning | GSP | Caldwell | 57 min |
| May 1, 6:45 PM EDT | Severe Thunderstorm Warning | GSP | Polk, Rutherford | 60 min |
| May 1, 6:51 PM EDT | Severe Thunderstorm Warning | GSP | Burke | 69 min |
| May 1, 7:06 PM EDT | Severe Thunderstorm Warning | GSP | Gaston | 69 min |
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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.