Alert archive / Georgia / Tornado Warnings in 2017

Tornado Warning 16, NWS Charleston, SC

April 5, 20174 counties in Georgia

NWS Charleston, SC issued this tornado warning at Apr 5, 2017, 10:48 PM EDT for 4 counties in Georgia. It was in force for 42 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, 10:48 PM EDT (02:48 UTC)
Expired: Apr 5, 2017, 11:30 PM EDT
In force: 42 min
Issued by: NWS Charleston, SC
Area: Storm-based polygon
Tornado: Observed
Hail: 1.5 in

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

The radar

The Charleston,SC radar (KCLX), 99 km from the middle of the area, began a volume at 02:51 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.

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 5, 12:54 PM EDT	Tornado Watch PDS	SPC	10 hr

The nearest sounding before it

Jacksonville, FL (KJAX), launched 00:00Z, 2.8 hours before the alert went out and 151 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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.

047 
WFUS52 KCHS 060248
TORCHS
GAC029-051-179-191-060330-
/O.NEW.KCHS.TO.W.0016.170406T0248Z-170406T0330Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Charleston SC
1048 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 1130 PM EDT
    
* At 1047 PM EDT, a tornado producing storm was located 11 miles east
  of Tibet, moving northeast at 45 mph.

  HAZARD...Damaging tornado and ping pong ball size hail. 

  SOURCE...Radar confirmed tornado. 

  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...
  Ossabaw Sound, Halfmoon Landing, Harris Neck, St. Catherines
  Island, Wassaw Island, Sunbury and Skidaway 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 3174 8141 3189 8105 3194 8095 3193 8086
      3171 8110 3162 8110 3157 8125
TIME...MOT...LOC 0247Z 240DEG 37KT 3163 8140 

TORNADO...OBSERVED
HAIL...1.50IN

$$

DPB

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 5, 8:12 PM EDT	Special Weather Statement	CHS	Long	33 min
Apr 5, 9:36 PM EDT	Special Weather Statement	CHS	Liberty, Long	39 min
Apr 5, 9:45 PM EDT	Special Weather Statement	CHS	Evans, Tattnall	45 min
Apr 5, 10:12 PM EDT	Severe Thunderstorm Warning	CHS	Liberty, Long, McIntosh	48 min
Apr 5, 10:25 PM EDT	Tornado Warning	CHS	Liberty, Long, McIntosh	50 min
Apr 5, 11:14 PM EDT	Severe Thunderstorm Warning	CHS	Liberty, Long, McIntosh	46 min
Apr 5, 11:27 PM EDT	Tornado Warning	CHS	Bryan, Chatham, Liberty, McIntosh	33 min
Apr 5, 11:33 PM EDT	Severe Thunderstorm Warning	CHS	Bryan, Chatham, Liberty, McIntosh	31 min
Apr 6, 12:16 AM EDT	Special Weather Statement	CHS	McIntosh	44 min
Apr 6, 12:54 AM EDT	Special Weather Statement	CHS	McIntosh	36 min
Apr 6, 1:36 AM EDT	Special Weather Statement	CHS	McIntosh	39 min
Apr 6, 2:58 AM EDT	Special Weather Statement	CHS	McIntosh	32 min

Nearby

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