Alert archive / Florida / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 21, NWS Jacksonville, FL

February 23, 2014Marion County, Florida

NWS Jacksonville, FL issued this severe thunderstorm warning at Feb 23, 2014, 2:17 PM EST for Marion County, Florida. It was in force for 28 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: Feb 23, 2014, 2:17 PM EST (19:17 UTC)
Expired: Feb 23, 2014, 2:45 PM EST
In force: 28 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon

County Marion County, FL

The radar

The Jacksonville radar (KJAX), 133 km from the middle of the area, began a volume at 19:18 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 12:00Z, 7.3 hours before the alert went out and 135 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: 49 J/kg
Mixed-layer CIN: -259 J/kg
Mixed-layer LCL: 596 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 113 m²/s²
0-3 km storm-relative helicity: 141 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

050 
WUUS52 KJAX 231917
SVRJAX
FLC083-231945-
/O.NEW.KJAX.SV.W.0021.140223T1917Z-140223T1945Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSONVILLE FL
217 PM EST SUN FEB 23 2014

THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN MARION COUNTY IN NORTHERN FLORIDA

* UNTIL 245 PM EST

* AT 217 PM EST...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
  TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
  LOCATED 18 MILES NORTHWEST OF OCALA AIRPORT...MOVING EAST AT 40
  MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO OCALA
  AIRPORT...OCALA...SPARR...SILVER SPRINGS SHORES...FORT MCCOY...
  CITRA AND ANTHONY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REPORT SEVERE WEATHER OR DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY
OR YOUR COUNTY EMERGENCY MANAGEMENT...OR YOU CAN CALL THE NATIONAL
WEATHER SERVICE IN JACKSONVILLE DIRECTLY AT 800-499-1594 TO REPORT
SEVERE WEATHER.

&&

LAT...LON 2916 8245 2922 8244 2922 8241 2949 8241
      2949 8222 2946 8219 2946 8221 2943 8221
      2942 8214 2943 8214 2944 8206 2948 8205
      2947 8200 2951 8191 2909 8197
TIME...MOT...LOC 1917Z 267DEG 33KT 2932 8242

$$

ALLEN

The office that day

Everything else NWS Jacksonville, FL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 23, 10:29 AM EST	Special Weather Statement	JAX	Gilchrist	31 min
Feb 23, 10:56 AM EST	Special Weather Statement	JAX	Gilchrist	34 min
Feb 23, 11:31 AM EST	Special Weather Statement	JAX	Gilchrist	29 min
Feb 23, 11:41 AM EST	Areal Flood Advisory	JAX	Alachua, Baker, Bradford, Columbia, Gilchrist, Hamilton and 3 more	77 days
Feb 23, 11:55 AM EST	Special Weather Statement	JAX	Alachua	35 min
Feb 23, 12:50 PM EST	Special Weather Statement	JAX	Alachua	25 min
Feb 23, 1:37 PM EST	Special Weather Statement	JAX	Putnam	23 min
Feb 23, 1:57 PM EST	Special Marine Warning	JAX		2 hr
Feb 23, 2:02 PM EST	Special Weather Statement	JAX	Flagler, Marion, Putnam	43 min
Feb 23, 2:15 PM EST	Severe Thunderstorm Warning	JAX	Flagler, Putnam	30 min
Feb 23, 2:32 PM EST	Tornado Warning	JAX	Flagler	28 min
Feb 23, 2:47 PM EST	Special Weather Statement	JAX	Putnam	28 min

Nearby

Severe Thunderstorm Warnings in Florida, 2014 Every severe thunderstorm warning in 2014

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.