Alert archive / Georgia / Special Weather Statements in 2012

Special Weather Statement, NWS Atlanta, GA

August 22, 2012Crisp County, Georgia

NWS Atlanta, GA issued this special weather statement at Aug 22, 2012, 1:21 PM EDT for Crisp County, Georgia. It was in force for 24 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 22, 2012, 1:21 PM EDT (17:21 UTC)
Expired
Aug 22, 2012, 1:45 PM EDT
In force
24 min
Issued by
NWS Atlanta, GA

County Crisp County, GA

The radar

The Robins AFB radar (KJGX), 101 km from the middle of the area, began a volume at 17:23 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

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 5.4 hours before the alert went out and 168 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, Tallahassee Rgnl, FL at 12:00Z on 2012-08-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 742 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tallahassee Rgnl, FL at 12:00Z on 2012-08-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -4 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
742 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
577 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
-4 m²/s²
0-3 km storm-relative helicity
15 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.2

Open this sounding in Storm Lab

The text

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

042 
WWUS82 KFFC 221721
SPSFFC

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
121 PM EDT WED AUG 22 2012

GAZ106-221745-
121 PM EDT WED AUG 22 2012

...SIGNIFICANT WEATHER ADVISORY FOR HEAVY RAIN IN CRISP COUNTY UNTIL
145 PM EDT...

AT 118 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM OVER WENONA...MOVING SOUTH AT 10 MPH.

RAINFALL AMOUNTS BETWEEN ONE TO TWO INCHES CAN BE EXPECTED ACROSS 
CRISP COUNTY...INCLUDING AREAS AROUND EAST 
CRISP...WENONA...RAINES...CORDELE AND ARABI. DRIVERS SHOULD USE 
CAUTION AS INTENSE RAINFALL WILL REDUCE VISIBILITIES. PONDING OF 
WATER ON ROADWAYS IS ALSO LIKELY.

&&

LAT...LON 3181 8381 3181 8383 3183 8387 3184 8391
      3199 8390 3198 8364 3180 8363 3180 8378
      3180 8380
TIME...MOT...LOC 1721Z 006DEG 7KT 3187 8377

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 22, 2:11 PM EDTSpecial Weather StatementFFCPulaski34 min
Aug 22, 2:20 PM EDTSpecial Weather StatementFFCClayton, Coweta, Fayette25 min
Aug 22, 3:04 PM EDTSpecial Weather StatementFFCDooly26 min
Aug 22, 3:27 PM EDTSpecial Weather StatementFFCClayton, DeKalb, Fayette, Spalding33 min
Aug 22, 4:33 PM EDTSpecial Weather StatementFFCDeKalb27 min
Aug 22, 4:48 PM EDTSpecial Weather StatementFFCSumter27 min
Aug 22, 4:51 PM EDTSpecial Weather StatementFFCSumter24 min
Aug 22, 6:24 PM EDTSpecial Weather StatementFFCWebster36 min

Nearby

Special Weather Statements in Georgia, 2012Every special weather statement in 2012

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.