Alert archive / Georgia / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 13, NWS Charleston, SC

April 1, 2016McIntosh County, Georgia

NWS Charleston, SC issued this severe thunderstorm warning at Apr 1, 2016, 5:43 PM EDT for McIntosh County, Georgia. It was in force for 62 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 1, 2016, 5:43 PM EDT (21:43 UTC)
Expired
Apr 1, 2016, 6:45 PM EDT
In force
62 min
Issued by
NWS Charleston, SC
Area
Storm-based polygon
Tornado
Possible
Hail
0.88 in
Wind
70.0 mph

County McIntosh County, GA

The radar

The Jacksonville radar (KJAX), 105 km from the middle of the area, began a volume at 21:44 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.

IssuedProductOfficeLasted
Apr 1, 2:48 PM EDTTornado WatchSPC6 hr

The nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 9.7 hours before the alert went out and 103 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, Jacksonville, FL at 12:00Z on 2016-04-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 118 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, Jacksonville, FL at 12:00Z on 2016-04-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 140 square meters per square second.1939587897Sfc1 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
118 J/kg
Mixed-layer CIN
-235 J/kg
Mixed-layer LCL
843 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
140 m²/s²
0-3 km storm-relative helicity
176 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

207 
WUUS52 KCHS 012143
SVRCHS
GAC191-012245-
/O.NEW.KCHS.SV.W.0013.160401T2143Z-160401T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHARLESTON SC
543 PM EDT FRI APR 1 2016

THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR PORTIONS OF...
  MCINTOSH COUNTY IN SOUTHEASTERN GEORGIA...

* UNTIL 645 PM EDT

* AT 543 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED 12 MILES NORTHWEST
  OF DOCK JUNCTION...MOVING NORTHEAST AT 40 MPH.

  HAZARD...70 MPH WIND GUSTS AND NICKEL SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...EXPECT CONSIDERABLE TREE DAMAGE. DAMAGE IS LIKELY TO 
           MOBILE HOMES...ROOFS...AND OUTBUILDINGS. 

* LOCATIONS IMPACTED INCLUDE...
  DARIEN...CRESCENT...SAPELO ISLAND...RIDGEVILLE...SHELLMAN BLUFF...
  BLACKBEARD ISLAND...MERIDIAN AND VALONA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

INCREASED ROTATION HAS BEEN DETECTED AND A TORNADO WARNING MAY BE
NEEDED. REMAIN ALERT FOR A POSSIBLE TORNADO! TORNADOES CAN DEVELOP
QUICKLY FROM SEVERE THUNDERSTORMS. IF YOU SPOT A TORNADO...TAKE
SHELTER IN A CLOSET...BATHROOM OR SMALL...CENTRAL ROOM IN A STURDY
STRUCTURE.

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM EDT FOR SOUTHEASTERN
GEORGIA.

LAT...LON 3129 8141 3133 8144 3134 8149 3138 8155
      3145 8162 3163 8138 3151 8116 3140 8123
      3137 8122 3135 8124 3131 8122 3129 8131
TIME...MOT...LOC 2143Z 235DEG 35KT 3133 8166 

TORNADO...POSSIBLE
HAIL...0.88IN
WIND...70MPH
 
$$
4 follow-up statements
448 
WWUS52 KCHS 012159
SVSCHS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
559 PM EDT FRI APR 1 2016

GAC191-012245-
/O.CON.KCHS.SV.W.0013.000000T0000Z-160401T2245Z/
MCINTOSH GA-
559 PM EDT FRI APR 1 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR MCINTOSH COUNTY...

AT 558 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER DARIEN...
MOVING NORTHEAST AT 45 MPH.

HAZARD...70 MPH WIND GUSTS AND NICKEL SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...EXPECT CONSIDERABLE TREE DAMAGE. DAMAGE IS LIKELY TO MOBILE 
         HOMES...ROOFS...AND OUTBUILDINGS. 

LOCATIONS IMPACTED INCLUDE...
DARIEN...CRESCENT...SAPELO ISLAND...RIDGEVILLE...SHELLMAN BLUFF...
BLACKBEARD ISLAND...MERIDIAN AND VALONA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

INCREASED ROTATION HAS BEEN DETECTED AND A TORNADO WARNING MAY BE
NEEDED. REMAIN ALERT FOR A POSSIBLE TORNADO! TORNADOES CAN DEVELOP
QUICKLY FROM SEVERE THUNDERSTORMS. IF YOU SPOT A TORNADO TAKE SHELTER
IN A CLOSET...BATHROOM OR SMALL CENTRAL ROOM IN A STURDY STRUCTURE.

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM EDT FOR SOUTHEASTERN
GEORGIA.

LAT...LON 3129 8141 3133 8144 3134 8149 3138 8155
      3145 8162 3163 8138 3151 8116 3140 8123
      3137 8122 3135 8124 3131 8122 3129 8131
TIME...MOT...LOC 2158Z 246DEG 40KT 3140 8146 

TORNADO...POSSIBLE
HAIL...0.88IN
WIND...70MPH
 
$$
239 
WWUS52 KCHS 012207
SVSCHS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
607 PM EDT FRI APR 1 2016

GAC191-012245-
/O.CON.KCHS.SV.W.0013.000000T0000Z-160401T2245Z/
MCINTOSH GA-
607 PM EDT FRI APR 1 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR MCINTOSH COUNTY...

AT 607 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR DARIEN...
MOVING NORTHEAST AT 30 MPH.

HAZARD...60 MPH WIND GUSTS AND NICKEL SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

LOCATIONS IMPACTED INCLUDE...
DARIEN...MERIDIAN...VALONA...CRESCENT...SAPELO ISLAND...RIDGEVILLE...LITTLE
SAINT SIMONS ISLAND AND WOLF ISLAND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

INCREASED ROTATION HAS BEEN DETECTED AND A TORNADO WARNING MAY BE
NEEDED. REMAIN ALERT FOR A POSSIBLE TORNADO! TORNADOES CAN DEVELOP
QUICKLY FROM SEVERE THUNDERSTORMS. IF YOU SPOT A TORNADO TAKE SHELTER
IN A CLOSET...BATHROOM OR SMALL CENTRAL ROOM IN A STURDY STRUCTURE.

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM EDT FOR SOUTHEASTERN
GEORGIA.

LAT...LON 3129 8141 3133 8144 3134 8149 3140 8151
      3149 8148 3160 8132 3151 8116 3140 8123
      3137 8122 3135 8124 3131 8123 3129 8130
TIME...MOT...LOC 2207Z 245DEG 27KT 3141 8139 

TORNADO...POSSIBLE
HAIL...0.88IN
WIND...60MPH
 
$$
125 
WWUS52 KCHS 012220
SVSCHS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
620 PM EDT FRI APR 1 2016

GAC191-012245-
/O.CON.KCHS.SV.W.0013.000000T0000Z-160401T2245Z/
MCINTOSH GA-
620 PM EDT FRI APR 1 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR MCINTOSH COUNTY...

AT 620 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED 11 MILES NORTHEAST
OF DARIEN...MOVING NORTHEAST AT 45 MPH.

HAZARD...60 MPH WIND GUSTS AND PENNY SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

LOCATIONS IMPACTED INCLUDE...
MERIDIAN...VALONA...CRESCENT...SAPELO ISLAND...RIDGEVILLE...WOLF ISLAND...
CARNIGAN AND BLACKBEARD ISLAND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH A TORNADO IS NOT
IMMEDIATELY LIKELY...IF ONE IS SPOTTED...ACT QUICKLY AND MOVE TO A
PLACE OF SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR
SMALL INTERIOR ROOM.

&&

LAT...LON 3136 8138 3144 8143 3149 8140 3158 8129
      3151 8116 3140 8123 3139 8123 3137 8122
      3135 8124 3132 8125
TIME...MOT...LOC 2220Z 242DEG 41KT 3146 8127 

HAIL...0.75IN
WIND...60MPH
 
$$
175 
WWUS52 KCHS 012239
SVSCHS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
639 PM EDT FRI APR 1 2016

GAC191-012249-
/O.EXP.KCHS.SV.W.0013.000000T0000Z-160401T2245Z/
MCINTOSH GA-
639 PM EDT FRI APR 1 2016

...THE SEVERE THUNDERSTORM WARNING FOR MCINTOSH COUNTY WILL EXPIRE AT
645 PM EDT...
        
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM EDT FOR SOUTHEASTERN
GEORGIA.

LAT...LON 3136 8138 3144 8143 3149 8140 3158 8129
      3151 8116 3140 8123 3139 8123 3137 8122
      3135 8124 3132 8125
TIME...MOT...LOC 2237Z 235DEG 35KT 3146 8127 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 1, 9:53 AM EDTRiver Flood WarningCHSBurke, Emanuel, Jenkins59 hr
Apr 1, 11:07 AM EDTSevere Thunderstorm WarningCHSCandler35 min
Apr 1, 12:28 PM EDTSevere Thunderstorm WarningCHSEffingham, Screven47 min
Apr 1, 3:56 PM EDTSpecial Weather StatementCHSScreven34 min
Apr 1, 5:24 PM EDTSpecial Weather StatementCHSEffingham36 min
Apr 1, 5:33 PM EDTSevere Thunderstorm WarningCHSBulloch, Effingham, Screven26 min
Apr 1, 5:57 PM EDTSpecial Weather StatementCHSLong33 min
Apr 1, 6:40 PM EDTSpecial Weather StatementCHSChatham20 min
Apr 1, 7:15 PM EDTSpecial Weather StatementCHSMcIntosh30 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2016Every severe thunderstorm warning in 2016

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.