Alert archive / Georgia / Flash Flood Warnings in 2010
Flash Flood Warning 15, NWS Atlanta, GA
NWS Atlanta, GA issued this flash flood warning at Aug 13, 2010, 4:34 PM EDT for 4 counties in Georgia. It was in force for 95 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 13, 2010, 4:34 PM EDT (20:34 UTC)
- Expired
- Aug 13, 2010, 6:09 PM EDT
- In force
- 95 min
- Issued by
- NWS Atlanta, GA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Clarke County, GA, Jackson County, GA, Madison County, GA, Oglethorpe County, GA
The radar
The Greer radar (KGSP), 136 km from the middle of the area, began a volume at 20:36 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
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 8.6 hours before the alert went out and 135 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
- 1732 J/kg
- Mixed-layer CIN
- -57 J/kg
- Mixed-layer LCL
- 682 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- 4 m²/s²
- 0-3 km storm-relative helicity
- 56 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
620 WGUS52 KFFC 132034 FFWFFC GAC059-157-195-221-140230- /O.NEW.KFFC.FF.W.0015.100813T2034Z-100814T0230Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE PEACHTREE CITY GA 434 PM EDT FRI AUG 13 2010 THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A * FLASH FLOOD WARNING FOR... CLARKE COUNTY IN NORTHEAST GEORGIA SOUTHEASTERN JACKSON COUNTY IN NORTHEAST GEORGIA SOUTHERN MADISON COUNTY IN NORTHEAST GEORGIA NORTHWESTERN OGLETHORPE COUNTY IN NORTHEAST GEORGIA * UNTIL 1030 PM EDT * AT 425 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED FLASH FLOODING FROM SLOW MOVING THUNDERSTORMS OVER THE WARNED AREA. RAINFALL AMOUNTS OF 2 TO 3 INCHES HAVE ALREADY FALLEN SINCE 330 PM EDT. ANOTHER 1 TO 2 INCHES CAN BE EXPECTED IN THE NEXT COUPLE OF HOURS. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO HULL... COLBERT AND COMER. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS...OR WATERS OF UNKNOWN DEPTH...ON FOOT OR IN AN AUTOMOBILE. IF YOU SEE SIGNIFICANT FLOODING CALL THE NATIONAL WEATHER SERVICE TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6. && LAT...LON 3408 8309 3387 8313 3394 8349 3409 8349 $$
1 follow-up statement
685 WGUS72 KFFC 132209 FFSFFC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE PEACHTREE CITY GA 609 PM EDT FRI AUG 13 2010 GAC059-157-195-221-132240- /O.CAN.KFFC.FF.W.0015.000000T0000Z-100814T0230Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ OGLETHORPE GA-CLARKE GA-MADISON GA-JACKSON GA- 609 PM EDT FRI AUG 13 2010 ...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SOUTHEASTERN JACKSON...SOUTHERN MADISON...CLARKE AND NORTHWESTERN OGLETHORPE COUNTIES... HEAVY RAIN OCCURRED EARLIER ALONG THE CLARKE AND MADISON COUNTY LINE. ESTIMATED RAINFALL AMOUNTS OF 2 TO 3 INCHES IN ONE HOUR WERE FROM THE SANDY CREEK RECREATION AREA NORTH OF ATHENS...THROUGH BARRETTS MILL AND HULL...TO WINTERVILLE AND CRAWFORD. COUNTY OFFICIALS HAVE INDICATED SOME LOCALIZED STREET FLOODING DID OCCUR...BUT NO FLASH FLOODING WAS OCCURRING ON THE CREEKS IN THE WARNED AREA. IF YOU SEE SIGNIFICANT FLOODING CALL THE NATIONAL WEATHER SERVICE TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6. LAT...LON 3408 8309 3387 8313 3394 8349 3409 8349 $$ 16
The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 13, 3:53 PM EDT | Severe Thunderstorm Warning | FFC | Clarke, Jackson, Madison, Oglethorpe | 37 min |
| Aug 13, 4:15 PM EDT | Severe Thunderstorm Warning | FFC | Jackson | 45 min |
| Aug 13, 6:27 PM EDT | Severe Thunderstorm Warning | FFC | Towns | 35 min |
Nearby
Flash Flood Warnings in Georgia, 2010Every flash flood warning in 2010
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.