Alert archive / North Carolina / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 94, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jul 7, 1999, 12:56 PM EDT for Avery County, North Carolina. It was in force for 34 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
- Jul 7, 1999, 12:56 PM EDT (16:56 UTC)
- Expired
- Jul 7, 1999, 1:30 PM EDT
- In force
- 34 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Whole counties
County Avery County, NC
The radar
The Knoxville radar (KMRX), 133 km from the middle of the area, began a volume at 17:00 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 nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 4.9 hours before the alert went out and 182 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
- 683 J/kg
- Mixed-layer CIN
- -124 J/kg
- Mixed-layer LCL
- 1339 m above ground
- 0-6 km bulk shear
- 3 kt
- 0-1 km storm-relative helicity
- 8 m²/s²
- 0-3 km storm-relative helicity
- 53 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.
NWS Greenville-Spartanburg, SC wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 7, 10:00 AM EDT, 2 hours 56 minutes earlier.
Area forecast discussion, Jul 7, 10:00 AM EDT, 2 hours 56 minutes before
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</html>In the hours before
Special weather statement, Jul 7, 11:48 AM EDT, 1 hour 8 minutes before
GAZ010-017-018-026-028-029-NCZ033>037-048>059-062>072-082-SCZ001>014- 019-072200- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 1148 AM EDT WED JUL 7 1999 ...STRONG THUNDERSTORMS POSSIBLE ACROSS THE WESTERN CAROLINAS AND EXTREME NORTHEAST GEORGIA... STRONG THUNDERSTORMS ARE EXPECTED TO DEVELOP AGAIN THIS AFTERNOON ACROSS THE WESTERN CAROLINAS AND NORTHEAST GEORGIA. THE ATMOSPHERE ACROSS THE REGION HAS RECOVERED FROM THE ROUND OF THUNDERSTORMS ON TUESDAY AND IS ONCE AGAIN MODERATELY UNSTABLE. FURTHER...NUMEROUS BOUNDARIES REMAIN FROM YESTERDAY WHICH WILL LIKELY ACT AS A FOCUS FOR THUNDERSTORM DEVELOPMENT TODAY. ISOLATED SEVERE THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON AND EVENING WITH THE MAIN THREAT BEING DOWNBURST WIND AND HAIL. ADDITIONALLY...LIGHT WIND THROUGH A DEEP LAYER AND ABUNDANT MOISTURE IN THE LOW LEVELS OF THE ATMOSPHERE WILL CONTRIBUTE TO SLOW MOVING STORMS CAPABLE OF PRODUCING HEAVY RAIN AND POSSIBLE FLOODING. SPOTTERS SHOULD KEEP ABREAST OF THE LATEST CONDITIONS AND BE PREPARED TO ACTIVATE SPOTTER NETS THIS AFTERNOON AND EVENING. STAY TUNED TO NOAA WEATHER RADIO FOR LATER STATEMENTS. DELGADO
Special weather statement, Jul 7, 11:48 AM EDT, 1 hour 8 minutes before
GAZ010-017-018-026-028-029-NCZ033>037-048>059-062>072-082-SCZ001>014- 019-072200- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 1148 AM EDT WED JUL 7 1999 ...STRONG THUNDERSTORMS POSSIBLE ACROSS THE WESTERN CAROLINAS AND EXTREME NORTHEAST GEORGIA... STRONG THUNDERSTORMS ARE EXPECTED TO DEVELOP AGAIN THIS AFTERNOON ACROSS THE WESTERN CAROLINAS AND NORTHEAST GEORGIA. THE ATMOSPHERE ACROSS THE REGION HAS RECOVERED FROM THE ROUND OF THUNDERSTORMS ON TUESDAY AND IS ONCE AGAIN MODERATELY UNSTABLE. FURTHER...NUMEROUS BOUNDARIES REMAIN FROM YESTERDAY WHICH WILL LIKELY ACT AS A FOCUS FOR THUNDERSTORM DEVELOPMENT TODAY. ISOLATED SEVERE THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON AND EVENING WITH THE MAIN THREAT BEING DOWNBURST WIND AND HAIL. ADDITIONALLY...LIGHT WIND THROUGH A DEEP LAYER AND ABUNDANT MOISTURE IN THE LOW LEVELS OF THE ATMOSPHERE WILL CONTRIBUTE TO SLOW MOVING STORMS CAPABLE OF PRODUCING HEAVY RAIN AND POSSIBLE FLOODING. SPOTTERS SHOULD KEEP ABREAST OF THE LATEST CONDITIONS AND BE PREPARED TO ACTIVATE SPOTTER NETS THIS AFTERNOON AND EVENING. STAY TUNED TO NOAA WEATHER RADIO FOR LATER STATEMENTS. DELGADO
The office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 11:46 PM EDT | Flash Flood Warning | GSP | Madison | 4 hr |
| Jul 7, 1:34 PM EDT | Severe Thunderstorm Warning | GSP | Rutherford | 36 min |
| Jul 7, 2:34 PM EDT | Severe Thunderstorm Warning | GSP | Caldwell | 31 min |
| Jul 7, 2:39 PM EDT | Severe Thunderstorm Warning | GSP | Burke | 31 min |
| Jul 7, 3:10 PM EDT | Severe Thunderstorm Warning | GSP | Alexander, Caldwell | 30 min |
| Jul 7, 3:10 PM EDT | Severe Thunderstorm Warning | GSP | Burke | 30 min |
| Jul 7, 3:40 PM EDT | Flash Flood Warning | GSP | Burke, Caldwell | 3 hr |
| Jul 7, 3:41 PM EDT | Severe Thunderstorm Warning | GSP | Davie | 34 min |
Nearby
Severe Thunderstorm Warnings in North Carolina, 1999Every severe thunderstorm warning in 1999
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.