Alert archive / North Carolina / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 374, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Sep 9, 2009, 3:15 AM EDT for Madison County, North Carolina. It was in force for 60 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
- Sep 9, 2009, 3:15 AM EDT (07:15 UTC)
- Expired
- Sep 9, 2009, 4:15 AM EDT
- In force
- 60 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Storm-based polygon
County Madison County, NC
The radar
The Knoxville radar (KMRX), 71 km from the middle of the area, began a volume at 07:15 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
Roanoke, VA (KRNK), launched 00:00Z, 7.3 hours before the alert went out and 323 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
- 1084 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 737 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 72 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Sep 9, 2:47 AM EDT, 28 minutes earlier.
Area forecast discussion, Sep 9, 2:47 AM EDT, 28 minutes before
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HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 614 PM EDT TUE SEP 8 2009 GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065- 068>072-082-501>510-SCZ001>014-019-092215- RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT-AVERY-ALEXANDER- IREDELL-DAVIE-MADISON-YANCEY-MITCHELL-SWAIN-HAYWOOD-BUNCOMBE-CATAWBA- ROWAN-GRAHAM-NORTHERN JACKSON-MACON-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- 614 PM EDT TUE SEP 8 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA...PIEDMONT NORTH CAROLINA...WESTERN NORTH CAROLINA AND UPSTATE SOUTH CAROLINA. .DAY ONE...TONIGHT. ISOLATED TO SCATTERED THUNDERSTORMS WILL CONTINUE ACROSS THE REGION THIS EVENING. A FEW OF THESE STORMS MAY BECOME SEVERE WITH LARGE HAIL AND DAMAGING WINDS. SEVERE STORMS ARE MOST LIKELY OVER THE UPSTATE OF SOUTH CAROLINA. REMEMBER...CLOUD TO GROUND LIGHTNING AND BRIEF HEAVY RAINFALL IS POSSIBLE WITH ANY THUNDERSTORM. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... NONE.
In the hours before
Special weather statement, Sep 9, 12:55 AM EDT, 2 hours 20 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 1255 AM EDT WED SEP 9 2009 NCZ501>504-090545- BURKE MOUNTAINS-CALDWELL MOUNTAINS-GREATER BURKE-GREATER CALDWELL- 1255 AM EDT WED SEP 9 2009 ...HEAVY RAINFALL TO AFFECT BURKE AND CALDWELL COUNTIES THROUGH 200 AM EDT... AT 1250 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED NUMEROUS THUNDERSTORMS DEVELOPING OVER THE NORTH CAROLINA FOOTHILLS...PRODUCING HEAVY RAINFALL ACROSS MUCH OF BURKE AND CALDWELL COUNTIES. THESE THUNDERSTORMS WERE PRODUCING RAINFALL AT RATES APPROACHING TWO INCHES PER HOUR...AND THIS HEAVY RAINFALL WILL LIKELY CONTINUE UNTIL 2 AM. ISOLATED FLOODING MAY DEVELOP IN LOW LYING AREAS...ESPECIALLY FROM EDGEMONT TO MORGANTON. RAPID RISES ARE EXPECTED ON AREA STREAMS AND CREEKS...ESPECIALLY WILSON CREEK IN WESTERN CALDWELL COUNTY...AND BRISTOL CREEK IN NORTHERN BURKE COUNTY. DO NOT ATTEMPT TO DRIVE THROUGH ANY FLOODED ROADWAYS. HG
Local storm report, Sep 9, 1:29 AM EDT, 1 hour 46 minutes before
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</html>The office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 9, 1:02 AM EDT | Severe Thunderstorm Warning | GSP | Burke | 58 min |
| Sep 9, 3:11 AM EDT | Severe Thunderstorm Warning | GSP | McDowell, Rutherford | 64 min |
| Sep 9, 4:48 AM EDT | Severe Thunderstorm Warning | GSP | Cleveland, Rutherford | 57 min |
| Sep 9, 11:58 AM EDT | Severe Thunderstorm Warning | GSP | Buncombe, Madison | 62 min |
| Sep 9, 12:43 PM EDT | Severe Thunderstorm Warning | GSP | Buncombe | 62 min |
| Sep 9, 1:43 PM EDT | Severe Thunderstorm Warning | GSP | Buncombe, Madison | 36 min |
| Sep 9, 1:46 PM EDT | Severe Thunderstorm Warning | GSP | Buncombe, Henderson | 59 min |
| Sep 9, 2:01 PM EDT | Severe Thunderstorm Warning | GSP | Burke, McDowell | 59 min |
| Sep 9, 2:13 PM EDT | Severe Thunderstorm Warning | GSP | Buncombe, McDowell | 62 min |
| Sep 9, 2:26 PM EDT | Severe Thunderstorm Warning | GSP | Haywood, Jackson | 50 min |
| Sep 9, 2:33 PM EDT | Severe Thunderstorm Warning | GSP | Henderson, Polk | 57 min |
| Sep 9, 3:27 PM EDT | Severe Thunderstorm Warning | GSP | Polk | 63 min |
| Sep 9, 3:46 PM EDT | Severe Thunderstorm Warning | GSP | Henderson | 59 min |
| Sep 9, 3:50 PM EDT | Severe Thunderstorm Warning | GSP | Transylvania | 55 min |
| Sep 9, 4:07 PM EDT | Severe Thunderstorm Warning | GSP | Greenville, Laurens, Spartanburg | 53 min |
| Sep 9, 4:27 PM EDT | Severe Thunderstorm Warning | GSP | Oconee | 48 min |
| Sep 9, 4:51 PM EDT | Severe Thunderstorm Warning | GSP | Laurens, Spartanburg, Union | 54 min |
| Sep 9, 5:38 PM EDT | Severe Thunderstorm Warning | GSP | Laurens, Union | 35 min |
Nearby
Severe Thunderstorm Warnings in North Carolina, 2009Every severe thunderstorm warning in 2009
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.