Alert archive / Georgia / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 53, NWS Charleston, SC
NWS Charleston, SC issued this severe thunderstorm warning at Apr 28, 2011, 3:57 PM EDT for McIntosh County, Georgia. It was in force for 48 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
- Apr 28, 2011, 3:57 PM EDT (19:57 UTC)
- Expired
- Apr 28, 2011, 4:45 PM EDT
- In force
- 48 min
- Issued by
- NWS Charleston, SC
- Area
- Storm-based polygon
County McIntosh County, GA
The radar
The Jacksonville radar (KJAX), 116 km from the middle of the area, began a volume at 19:56 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 28, 8:48 AM EDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Jacksonville, FL (KJAX), launched 12:00Z, 8.0 hours before the alert went out and 114 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
- 1394 J/kg
- Mixed-layer CIN
- -52 J/kg
- Mixed-layer LCL
- 817 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 161 m²/s²
- 0-3 km storm-relative helicity
- 154 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.5
The text
As transmitted, in the capitals the NWS used until 2016.
674
WUUS52 KCHS 281957
SVRCHS
GAC191-282045-
/O.NEW.KCHS.SV.W.0053.110428T1957Z-110428T2045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHARLESTON SC
357 PM EDT THU APR 28 2011
THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
MCINTOSH COUNTY IN SOUTHEAST GEORGIA...
* UNTIL 445 PM EDT
* AT 350 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM...16 MILES WEST OF DARIEN...MOVING EAST AT 50
MPH.
PREPARE NOW FOR THE FOLLOWING HAZARDS...
DAMAGING WINDS IN EXCESS OF 60 MPH...
HAIL UP TO QUARTER SIZE...
TORRENTIAL RAIN WHICH MAY PRODUCE LOCALIZED FLOODING...
* SOME LOCATIONS IN THE WARNING INCLUDE...
DARIEN...SAPELO ISLAND...WOLF ISLAND...HARRIS NECK...BLACKBEARD
ISLAND...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REPORT HAIL...DOWNED TREES...LIMBS...AND POWER LINES DIRECTLY TO THE
CHARLESTON NATIONAL WEATHER SERVICE AT 1-888-383-2024.
&&
LAT...LON 3129 8141 3140 8159 3145 8162 3154 8167
3157 8157 3168 8151 3168 8147 3163 8147
3165 8144 3164 8143 3166 8132 3165 8126
3161 8119 3152 8117 3140 8125 3137 8124
3137 8127 3130 8125 3129 8130 3131 8139
TIME...MOT...LOC 1957Z 256DEG 42KT 3141 8161
$$1 follow-up statement
048
WWUS52 KCHS 282047
SVSCHS
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
447 PM EDT THU APR 28 2011
GAC191-282057-
/O.EXP.KCHS.SV.W.0053.000000T0000Z-110428T2045Z/
MCINTOSH GA-
447 PM EDT THU APR 28 2011
...THE SEVERE THUNDERSTORM WARNING FOR MCINTOSH COUNTY EXPIRED AT
445 PM EDT...
AT 445 PM EDT...RADAR INDICATED THAT THE THUNDERSTORM WHICH PROMPTED
THE WARNING HAD WEAKENED...THUS THE SEVERE THUNDERSTORM WARNING HAS
BEEN ALLOWED TO EXPIRE.
ALTHOUGH THE IMMEDIATE THREAT FOR DAMAGING WINDS AND LARGE HAIL HAS
ENDED...THUNDERSTORMS ARE STILL PRODUCING FREQUENT CLOUD TO GROUND
LIGHTNING STRIKES AND VERY HEAVY RAIN. THE SAFEST COURSE OF ACTION
IS TO REMAIN INDOORS UNTIL THE STORMS HAVE PASSED.
TO REPORT HAIL OR WIND DAMAGE...CONTACT THE CHARLESTON NATIONAL
WEATHER SERVICE AT 1-888-383-2024 OR EMAIL YOUR REPORTS TO
CHS.SKYWARN@NOAA.GOV. REPORTS CAN ALSO BE SENT THROUGH TWITTER USING
#WXREPORT.
LAT...LON 3129 8141 3140 8159 3145 8162 3154 8167
3157 8157 3168 8151 3168 8147 3163 8147
3165 8144 3164 8143 3166 8132 3165 8126
3161 8119 3152 8117 3140 8125 3137 8124
3137 8127 3130 8125 3129 8130 3131 8139
TIME...MOT...LOC 1957Z 256DEG 42KT 3141 8161
$$The office that day
Everything else NWS Charleston, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 28, 7:13 AM EDT | Special Weather Statement | CHS | Jenkins | 62 min |
| Apr 28, 7:27 AM EDT | Severe Thunderstorm Warning | CHS | Jenkins, Screven | 63 min |
| Apr 28, 9:32 AM EDT | Special Weather Statement | CHS | Bulloch, Effingham | 28 min |
| Apr 28, 12:30 PM EDT | Special Weather Statement | CHS | Jenkins, Screven | 30 min |
| Apr 28, 3:30 PM EDT | Special Weather Statement | CHS | McIntosh | 30 min |
| Apr 28, 3:42 PM EDT | Special Marine Warning | CHS | 2 hr | |
| Apr 28, 4:06 PM EDT | Tornado Warning | CHS | McIntosh | 39 min |
| Apr 28, 4:52 PM EDT | Special Marine Warning | CHS | 96 min | |
| Apr 28, 5:43 PM EDT | Special Marine Warning | CHS | 58 min | |
| Apr 28, 7:58 PM EDT | Special Marine Warning | CHS | 55 min |
Nearby
Severe Thunderstorm Warnings in Georgia, 2011Every severe thunderstorm warning in 2011
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.