Alert archive / Georgia / Tornado Warnings in 2017

Tornado Warning 17, NWS Charleston, SC

April 5, 20174 counties in Georgia

NWS Charleston, SC issued this tornado warning at Apr 5, 2017, 11:27 PM EDT for 4 counties in Georgia. It was in force for 33 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 5, 2017, 11:27 PM EDT (03:27 UTC)
Expired
Apr 6, 2017, 12:00 AM EDT
In force
33 min
Issued by
NWS Charleston, SC
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.25 in

Counties Bryan County, GA, Chatham County, GA, Liberty County, GA, McIntosh County, GA

The radar

The Charleston,SC radar (KCLX), 119 km from the middle of the area, began a volume at 03:25 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

Jacksonville, FL (KJAX), launched 00:00Z, 3.5 hours before the alert went out and 129 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 00:00Z on 2017-04-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1177 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 00:00Z on 2017-04-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 122 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
1177 J/kg
Mixed-layer CIN
-25 J/kg
Mixed-layer LCL
1408 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
122 m²/s²
0-3 km storm-relative helicity
132 m²/s²
Significant tornado parameter
0.6
Supercell composite
3.8

Open this sounding in Storm Lab

The text

As transmitted.

560 
WFUS52 KCHS 060327
TORCHS
GAC029-051-179-191-060400-
/O.NEW.KCHS.TO.W.0017.170406T0327Z-170406T0400Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Charleston SC
1127 PM EDT WED APR 5 2017

The National Weather Service in Charleston has issued a

* Tornado Warning for portions of...
  Bryan County in southeastern Georgia...
  Liberty County in southeastern Georgia...
  McIntosh County in southeastern Georgia...
  Chatham County in southeastern Georgia...

* Until midnight EDT
    
* At 1126 PM EDT, a severe thunderstorm capable of producing a
  tornado was located 15 miles east of Tibet, moving northeast at 35
  mph.

  HAZARD...Tornado and half dollar size hail. 

  SOURCE...Radar indicated rotation. 

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely. 

* Locations impacted include...
  Pine Harbor, Crescent, Harris Neck, Shellman Bluff, St. Catherines
  Island and Blackbeard Island.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Report damage directly to the Charleston National Weather Service at
1-888-383-2024 when it is safe to do so.

&&

LAT...LON 3161 8143 3174 8115 3162 8110 3152 8116
      3150 8137
TIME...MOT...LOC 0326Z 239DEG 30KT 3159 8134 

TORNADO...RADAR INDICATED
HAIL...1.25IN

$$

DPB
1 follow-up statement
937 
WWUS52 KCHS 060359
SVSCHS

Severe Weather Statement
National Weather Service Charleston SC
1159 PM EDT WED APR 5 2017

GAC029-051-179-191-060408-
/O.EXP.KCHS.TO.W.0017.000000T0000Z-170406T0400Z/
Bryan GA-Liberty GA-McIntosh GA-Chatham GA-
1159 PM EDT WED APR 5 2017

...THE TORNADO WARNING FOR BRYAN...LIBERTY...MCINTOSH AND CHATHAM
COUNTIES WILL EXPIRE AT MIDNIGHT EDT...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning will be allowed to expire.  However small hail
is still possible with this thunderstorm.

LAT...LON 3161 8143 3174 8115 3162 8110 3152 8116
      3150 8137
TIME...MOT...LOC 0358Z 239DEG 30KT 3172 8108 

$$

DPB

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 5, 8:12 PM EDTSpecial Weather StatementCHSLong33 min
Apr 5, 9:36 PM EDTSpecial Weather StatementCHSLiberty, Long39 min
Apr 5, 9:45 PM EDTSpecial Weather StatementCHSEvans, Tattnall45 min
Apr 5, 10:12 PM EDTSevere Thunderstorm WarningCHSLiberty, Long, McIntosh48 min
Apr 5, 10:25 PM EDTTornado WarningCHSLiberty, Long, McIntosh50 min
Apr 5, 10:48 PM EDTTornado Warning Tornado observedCHSBryan, Chatham, Liberty, McIntosh42 min
Apr 5, 11:14 PM EDTSevere Thunderstorm WarningCHSLiberty, Long, McIntosh46 min
Apr 5, 11:33 PM EDTSevere Thunderstorm WarningCHSBryan, Chatham, Liberty, McIntosh31 min
Apr 6, 12:16 AM EDTSpecial Weather StatementCHSMcIntosh44 min
Apr 6, 12:54 AM EDTSpecial Weather StatementCHSMcIntosh36 min
Apr 6, 1:36 AM EDTSpecial Weather StatementCHSMcIntosh39 min
Apr 6, 2:58 AM EDTSpecial Weather StatementCHSMcIntosh32 min

Nearby

Tornado Warnings in Georgia, 2017Every tornado warning in 2017Tornadoes in 2017

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.