Alert archive / Georgia / Special Weather Statements in 2013

Special Weather Statement, NWS Atlanta, GA

August 19, 2013Upson County, Georgia

NWS Atlanta, GA issued this special weather statement at Aug 19, 2013, 8:49 PM EDT for Upson County, Georgia. It was in force for 41 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 19, 2013, 8:49 PM EDT (00:49 UTC)
Expired
Aug 19, 2013, 9:30 PM EDT
In force
41 min
Issued by
NWS Atlanta, GA

County Upson County, GA

The radar

The Atlanta radar (KFFC), 64 km from the middle of the area, began a volume at 00:52 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 00:00Z, 0.8 hours before the alert went out and 63 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-pSkew-T log-p diagram, Peachtre/Fal Fld, GA at 00:00Z on 2013-08-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1503 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peachtre/Fal Fld, GA at 00:00Z on 2013-08-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 18 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
1503 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
675 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
18 m²/s²
0-3 km storm-relative helicity
64 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

180 
WWUS82 KFFC 200049
SPSFFC

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
849 PM EDT MON AUG 19 2013

GAZ069-200130-
849 PM EDT MON AUG 19 2013

...SIGNIFICANT WEATHER ADVISORY FOR HEAVY RAIN IN UPSON COUNTY UNTIL
930 PM EDT...

AT 843 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
SHOW SHOWERS AND THUNDERSTORMS WITH HEAVY RAIN FROM AROUND HANNAHS 
MILL THROUGH THOMASTON TO SOUTH OF THOMASTON. THESE STORMS WERE 
NEARLY STATIONARY.

RUNOFF FROM THESE STORMS WILL CAUSE MINOR FLOODING OF SMALL CREEKS 
AND STREAMS...URBAN AREAS...HIGHWAYS AND STREETS ACROSS UPSON 
COUNTY...INCLUDING AREAS AROUND REDBONE CROSSROADS...THE 
ROCK...ROWLAND...HANNAHS MILL...ATWATER...CREST...SUNNYSIDE AND 
THOMASTON. ADDITIONALLY...COUNTRY ROADS...FORESTLANDS AND FARMLANDS 
ALONG THE BANKS OF CREEKS AND STREAMS ARE SUBJECT TO MINOR FLOODING. 

&&

LAT...LON 3298 8446 3297 8415 3276 8422 3272 8421
      3274 8424 3273 8425 3276 8430 3276 8433
      3279 8435 3277 8436 3278 8438 3284 8442
      3283 8445 3290 8448
TIME...MOT...LOC 0047Z 139DEG 0KT 3294 8429 3283 8433
          3277 8432

$$

The office that day

Everything else NWS Atlanta, GA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 19, 8:05 PM EDTSpecial Weather StatementFFCTaylor, Upson40 min
Aug 19, 8:29 PM EDTAreal Flood WarningFFCToombs6 hr
Aug 19, 8:37 PM EDTSpecial Weather StatementFFCHaralson38 min
Aug 19, 9:06 PM EDTFlash Flood WarningFFCUpson6 hr
Aug 19, 9:12 PM EDTSpecial Weather StatementFFCDodge, Wilcox48 min
Aug 19, 10:53 PM EDTSpecial Weather StatementFFCDade, Walker52 min
Aug 20, 3:23 AM EDTFlash Flood WatchFFCBaldwin, Bibb, Bleckley, Chattahoochee, Crawford, Crisp and 29 more20 hr
Aug 20, 12:31 PM EDTRiver Flood WarningFFCDodge, Telfair, Wilcox5 days
Aug 20, 7:37 PM EDTSpecial Weather StatementFFCChattahoochee, Muscogee38 min
Aug 20, 7:50 PM EDTSpecial Weather StatementFFCSumter25 min

Nearby

Special Weather Statements in Georgia, 2013Every special weather statement in 2013

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.