Alert archive / North Carolina / Flash Flood Watches in 2009

Flash Flood Watch 3, NWS Greenville-Spartanburg, SC

June 4, 200916 counties in North Carolina; 8 counties in South Carolina; 6 counties in Georgia

NWS Greenville-Spartanburg, SC issued this flash flood watch at Jun 4, 2009, 4:25 AM EDT for 16 counties in North Carolina; 8 counties in South Carolina; 6 counties in Georgia. It took effect at Jun 4, 2009, 6:00 AM EDT. It was in force for 30 hr.

The area

The counties it named.

The facts

Issued: Jun 4, 2009, 4:25 AM EDT (08:25 UTC)
In effect from: Jun 4, 2009, 6:00 AM EDT
Expired: Jun 5, 2009, 12:00 PM EDT
In force: 30 hr
Issued by: NWS Greenville-Spartanburg, SC
Flood severity: None

All 30 counties

Elbert County, GA, Franklin County, GA, Habersham County, GA, Hart County, GA, Rabun County, GA, Stephens County, GA, Alexander County, NC, Burke County, NC, Cabarrus County, NC, Caldwell County, NC, Catawba County, NC, Cleveland County, NC, Davie County, NC, Gaston County, NC, Iredell County, NC, Lincoln County, NC, McDowell County, NC, Mecklenburg County, NC, Polk County, NC, Rowan County, NC, Rutherford County, NC, Union County, NC, Abbeville County, SC, Anderson County, SC, Cherokee County, SC, Chester County, SC, Greenwood County, SC, Laurens County, SC, Union County, SC, York County, SC

The radar

The Greer radar (KGSP), 45 km from the middle of the area, began a volume at 08:26 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 00:00Z, 8.4 hours before the alert went out and 204 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1249 J/kg
Mixed-layer CIN: -59 J/kg
Mixed-layer LCL: 727 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 96 m²/s²
0-3 km storm-relative helicity: 115 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.4

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood watch 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 flash flood watch went out at Jun 4, 3:43 AM EDT, 42 minutes earlier.

Area forecast discussion, Jun 4, 3:43 AM EDT, 42 minutes before

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Hazardous weather outlook, Jun 3, 3:44 PM EDT, 12 hours 41 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
344 PM EDT WED JUN 3 2009

NCZ033-035>037-048>053-056-058-059-062>065-501>510-041945-
AVERY-ALEXANDER-IREDELL-DAVIE-MADISON-YANCEY-MITCHELL-SWAIN-HAYWOOD-
BUNCOMBE-CATAWBA-GRAHAM-NORTHERN JACKSON-MACON-SOUTHERN JACKSON-
TRANSYLVANIA-HENDERSON-CALDWELL MOUNTAINS-GREATER CALDWELL-
BURKE MOUNTAINS-GREATER BURKE-MCDOWELL MOUNTAINS-EASTERN MCDOWELL-
RUTHERFORD MOUNTAINS-GREATER RUTHERFORD-POLK MOUNTAINS-EASTERN POLK-
344 PM EDT WED JUN 3 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PIEDMONT NORTH CAROLINA AND
WESTERN NORTH CAROLINA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

SCATTERED THUNDERSTORMS WILL CONTINUE TO DEVELOP ACROSS THE REGION
INTO THIS EVENING. IN ADDITION TO LOCALLY HEAVY RAINFALL AND CLOUD
TO GROUND LIGHTNING...A FEW OF THE STORMS WILL BE CAPABLE OF
PRODUCING BRIEF PERIODS OF LARGE HAIL AND DAMAGING WINDS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTERS ARE REQUESTED TO FORWARD ANY REPORTS OF LARGE
HAIL...DAMAGING WINDS...TORNADOES OR FLASH FLOODING TO OUR OFFICE.

GAZ010-017-018-026-028-029-NCZ057-068>072-082-SCZ001>014-019-041945-
RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT-ROWAN-CLEVELAND-
LINCOLN-GASTON-MECKLENBURG-CABARRUS-UNION NC-OCONEE MOUNTAINS-
PICKENS MOUNTAINS-GREENVILLE MOUNTAINS-GREATER OCONEE-
GREATER PICKENS-GREATER GREENVILLE-SPARTANBURG-CHEROKEE-YORK-
ANDERSON-ABBEVILLE-LAURENS-UNION SC-CHESTER-GREENWOOD-
344 PM EDT WED JUN 3 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA...PIEDMONT
NORTH CAROLINA AND UPSTATE SOUTH CAROLINA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

ISOLATED THUNDERSTORMS MAY DEVELOP ACROSS THE AREA THIS EVENING.
IT IS POSSIBLE THAT LOCALIZED HEAVY RAINFALL AND CLOUD TO GROUND
LIGHTNING WILL OCCUR...AND EVEN A FEW OF THESE STORMS WILL BE
CAPABLE OF PRODUCING BRIEF PERIODS OF LARGE HAIL AND DAMAGING
WINDS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTERS ARE REQUESTED TO FORWARD ANY REPORTS OF LARGE
HAIL...DAMAGING WINDS...TORNADOES OR FLASH FLOODING TO OUR OFFICE.

In the hours before

Local storm report, Jun 3, 11:52 PM EDT, 4 hours 33 minutes before

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Special weather statement, Jun 4, 12:48 AM EDT, 3 hours 37 minutes before

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Special weather statement, Jun 4, 1:41 AM EDT, 2 hours 44 minutes before

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The office that day

Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 3, 10:11 PM EDT	Flash Flood Warning	GSP	Alexander, Burke, Caldwell, McDowell	6 hr
Jun 4, 12:20 AM EDT	Areal Flood Advisory	GSP	Iredell	55 min
Jun 4, 3:58 AM EDT	Areal Flood Advisory	GSP	Iredell	47 min
Jun 4, 4:14 AM EDT	Areal Flood Advisory	GSP	Alexander, Caldwell	2 hr
Jun 4, 1:46 PM EDT	Areal Flood Advisory	GSP	Madison	75 min

Nearby

Flash Flood Watches in North Carolina, 2009 Flash Flood Watches in South Carolina, 2009 Flash Flood Watches in Georgia, 2009 Every flash flood watch 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.