Alert archive / Georgia / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 74, NWS Charleston, SC

May 22, 20124 counties in Georgia

NWS Charleston, SC issued this severe thunderstorm warning at May 22, 2012, 3:51 PM EDT for 4 counties in Georgia. It was in force for 36 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
May 22, 2012, 3:51 PM EDT (19:51 UTC)
Expired
May 22, 2012, 4:27 PM EDT
In force
36 min
Issued by
NWS Charleston, SC
Area
Storm-based polygon

Counties Bryan County, GA, Evans County, GA, Liberty County, GA, Tattnall County, GA

The radar

The Charleston,SC radar (KCLX), 72 km from the middle of the area, began a volume at 19:51 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.

What was reported inside it

TimeReportWhereRemark
May 22, 3:52 PM EDTTSTM WND DMG3 Nne Midway, GA1 PECAN TREE DOWN. TIME ESTIMATED FROM RADAR.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
May 22, 3:32 PM EDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 7.9 hours before the alert went out and 163 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, Charleston AFB, SC at 12:00Z on 2012-05-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 831 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, Charleston AFB, SC at 12:00Z on 2012-05-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 34 square meters per square second.1939Sfc1 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
831 J/kg
Mixed-layer CIN
-73 J/kg
Mixed-layer LCL
1209 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
34 m²/s²
0-3 km storm-relative helicity
49 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

046 
WUUS52 KCHS 221951
SVRCHS
GAC029-109-179-267-222045-
/O.NEW.KCHS.SV.W.0074.120522T1951Z-120522T2045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHARLESTON SC
351 PM EDT TUE MAY 22 2012

THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN BRYAN COUNTY IN SOUTHEAST GEORGIA...
  SOUTHEASTERN EVANS COUNTY IN SOUTHEAST GEORGIA...
  NORTHWESTERN LIBERTY COUNTY IN SOUTHEAST GEORGIA...
  EXTREME EAST CENTRAL TATTNALL COUNTY IN SOUTHEAST GEORGIA...

* UNTIL 445 PM EDT

* AT 351 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM...NEAR MIDWAY...MOVING EAST AT 25 MPH.

  PREPARE NOW FOR THE FOLLOWING HAZARDS...
  DAMAGING WINDS IN EXCESS OF 60 MPH...
  HAIL UP TO QUARTER SIZE...

* SOME LOCATIONS IN THE WARNING INCLUDE...
  MIDWAY...MIDWAY...GROVELAND...PEMBROKE...ELLABELL...LANIER...
  BLITCHTON...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE THUNDERSTORMS HAVE BLOWN DOWN TREES IN TATTNALL COUNTY. TAKE 
SHELTER AS THUNDERSTORMS APPROACH.

REPORT HAIL...DOWNED TREES...LIMBS...AND POWER LINES DIRECTLY TO THE
CHARLESTON NATIONAL WEATHER SERVICE AT 1-888-383-2024...WHEN IT IS
SAFE TO DO SO.

&&

LAT...LON 3224 8144 3222 8143 3221 8141 3216 8141
      3215 8140 3212 8141 3210 8139 3205 8137
      3203 8134 3198 8132 3201 8189 3212 8191
TIME...MOT...LOC 1951Z 262DEG 22KT 3206 8187

$$
2 follow-up statements
027 
WWUS52 KCHS 222012 RRA
SVSCHS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
412 PM EDT TUE MAY 22 2012

GAC267-222021-
/O.CAN.KCHS.SV.W.0074.000000T0000Z-120522T2045Z/
TATTNALL GA-
412 PM EDT TUE MAY 22 2012

...THE SEVERE THUNDERSTORM WARNING FOR EXTREME EAST CENTRAL TATTNALL
COUNTY HAS BEEN CANCELLED...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
TUESDAY EVENING FOR SOUTHEAST GEORGIA AND SOUTHEAST SOUTH CAROLINA.

LAT...LON 3215 8180 3224 8144 3221 8141 3219 8142
      3215 8140 3212 8141 3210 8139 3205 8137
      3203 8134 3198 8132 3206 8179
TIME...MOT...LOC 2011Z 262DEG 22KT 3208 8173

$$

GAC029-109-179-222045-
/O.CON.KCHS.SV.W.0074.000000T0000Z-120522T2045Z/
EVANS GA-LIBERTY GA-BRYAN GA-
412 PM EDT TUE MAY 22 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR NORTHWESTERN BRYAN...EXTREME NORTHWESTERN LIBERTY AND
SOUTHEASTERN EVANS COUNTIES...

AT 411 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM NEAR GROVELAND...MOVING EAST AT 25
MPH.

PREPARE NOW FOR THE FOLLOWING HAZARDS...
DAMAGING WINDS IN EXCESS OF 60 MPH...
HAIL UP TO QUARTER SIZE...

LAW ENFORCEMENT AND TRAINED WEATHER SPOTTERS HAVE REPORTED THAT 
TREES AND A POWER POLE HAVE BEEN BLOWN DOWN IN TATTNALL AND EVANS 
COUNTIES. 

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
BLITCHTON...ELLABELL...GROVELAND...LANIER AND PEMBROKE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
TUESDAY EVENING FOR SOUTHEAST GEORGIA AND SOUTHEAST SOUTH CAROLINA.

&&

LAT...LON 3215 8180 3224 8144 3221 8141 3219 8142
      3215 8140 3212 8141 3210 8139 3205 8137
      3203 8134 3198 8132 3206 8179
TIME...MOT...LOC 2011Z 262DEG 22KT 3208 8173

$$
166 
WWUS52 KCHS 222027
SVSCHS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
427 PM EDT TUE MAY 22 2012

GAC029-109-179-222037-
/O.CAN.KCHS.SV.W.0074.000000T0000Z-120522T2045Z/
EVANS GA-LIBERTY GA-BRYAN GA-
427 PM EDT TUE MAY 22 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN BRYAN...EXTREME
NORTHWESTERN LIBERTY AND SOUTHEASTERN EVANS COUNTIES HAS BEEN
CANCELLED...

AT 427 PM EDT...RADAR INDICATED THAT THE THUNDERSTORM THAT PROMPTED
THE WARNING HAD WEAKENED...THUS THE WARNING HAS BEEN CANCELED.

ALTHOUGH THE SEVERE THUNDERSTORM WARNING IS NO LONGER IN EFFECT...
ADDITIONAL SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS 
AND LARGE HAIL MAY AFFECT THE AREA THIS AFTERNOON INTO THIS EVENING. 
CONTINUE TO MONITOR NOAA WEATHER RADIO ALL HAZARDS FOR THE LATEST 
FORECASTS...WARNINGS AND STATEMENTS FROM THE NATIONAL WEATHER 
SERVICE OFFICE IN CHARLESTON.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
TUESDAY EVENING FOR SOUTHEAST GEORGIA AND SOUTHEAST SOUTH CAROLINA.

LAT...LON 3215 8180 3224 8144 3221 8141 3219 8142
      3215 8140 3212 8141 3210 8139 3205 8137
      3203 8134 3198 8132 3206 8179
TIME...MOT...LOC 2027Z 262DEG 22KT 3209 8162

$$

The office that day

Everything else NWS Charleston, SC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 22, 3:05 PM EDTSevere Thunderstorm WarningCHSEvans, Tattnall55 min
May 22, 4:23 PM EDTSpecial Weather StatementCHSLong37 min
May 22, 4:26 PM EDTSpecial Weather StatementCHSScreven34 min
May 22, 4:34 PM EDTSevere Thunderstorm WarningCHSBulloch, Effingham, Screven40 min
May 22, 5:12 PM EDTSpecial Weather StatementCHSChatham33 min
May 22, 5:28 PM EDTSevere Thunderstorm WarningCHSBryan, Chatham45 min
May 22, 5:31 PM EDTSpecial Marine WarningCHS89 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2012Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.