Alert archive / Florida / Tornado Warnings in 2015

Tornado Warning 2, NWS Jacksonville, FL

April 25, 2015Hamilton County, Suwannee County, Florida

NWS Jacksonville, FL issued this tornado warning at Apr 25, 2015, 12:34 PM EDT for Hamilton County, Suwannee County, Florida. It was in force for 26 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 25, 2015, 12:34 PM EDT (16:34 UTC)
Expired: Apr 25, 2015, 1:00 PM EDT
In force: 26 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon

Counties Hamilton County, FL, Suwannee County, FL

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 25, 9:08 AM EDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 4.6 hours before the alert went out and 113 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: 215 J/kg
Mixed-layer CIN: -111 J/kg
Mixed-layer LCL: 704 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 304 m²/s²
0-3 km storm-relative helicity: 365 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.3

Open this sounding in Storm Lab

The text

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

552 
WFUS52 KJAX 251634
TORJAX
FLC047-121-251700-
/O.NEW.KJAX.TO.W.0002.150425T1634Z-150425T1700Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1234 PM EDT SAT APR 25 2015

THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL HAMILTON COUNTY IN NORTHERN FLORIDA...
  NORTHEASTERN SUWANNEE COUNTY IN NORTHERN FLORIDA...

* UNTIL 100 PM EDT
    
* AT 1234 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED
  OVER SUWANNEE RIVER STATE PARK...AND MOVING EAST AT 45 MPH.

* LOCATIONS IMPACTED INCLUDE...
  JASPER...SUWANNEE SPRINGS...SUWANNEE RIVER STATE PARK...BLUE
  SPRINGS AND CROSSROADS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF YOU ARE IN A MOBILE
HOME OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND
PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3055 8284 3032 8282 3038 8317 3041 8318
      3042 8319 3041 8321 3042 8321 3042 8322
      3046 8322 3047 8323 3047 8324 3049 8324
TIME...MOT...LOC 1634Z 266DEG 38KT 3042 8320 

$$

PETERSON

1 follow-up statement

838 
WWUS52 KJAX 251645
SVSJAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1245 PM EDT SAT APR 25 2015

FLC047-121-251700-
/O.CON.KJAX.TO.W.0002.000000T0000Z-150425T1700Z/
HAMILTON FL-SUWANNEE FL-
1245 PM EDT SAT APR 25 2015

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 100 PM EDT FOR CENTRAL
HAMILTON AND NORTHEASTERN SUWANNEE COUNTIES...
    
AT 1244 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR
SUWANNEE RIVER STATE PARK...MOVING EAST AT 45 MPH.

LOCATIONS IMPACTED INCLUDE... JASPER AND SUWANNEE SPRINGS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF YOU ARE IN A MOBILE
HOME OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND
PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3055 8284 3032 8282 3038 8315 3039 8316
      3041 8315 3045 8315 3047 8317 3049 8316
TIME...MOT...LOC 1644Z 266DEG 38KT 3043 8307 

$$

ZIBURA

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 25, 3:34 AM EDT	Small Craft Advisory	JAX		31 hr
Apr 25, 12:24 PM EDT	Special Weather Statement	JAX	Hamilton	51 min
Apr 25, 1:00 PM EDT	Tornado Warning	JAX	Columbia, Hamilton, Suwannee	30 min
Apr 25, 1:29 PM EDT	Tornado Warning	JAX	Baker, Columbia	31 min
Apr 25, 1:57 PM EDT	Tornado Warning	JAX	Baker	33 min
Apr 25, 2:18 PM EDT	Special Weather Statement	JAX	Duval	42 min
Apr 25, 2:28 PM EDT	Severe Thunderstorm Warning	JAX	Baker, Clay, Duval, Saint Johns	47 min
Apr 25, 3:06 PM EDT	Tornado Warning	JAX	Clay, Duval, Saint Johns	24 min
Apr 25, 3:25 PM EDT	Special Weather Statement	JAX	Saint Johns	35 min
Apr 25, 3:29 PM EDT	Special Marine Warning	JAX		2 hr
Apr 25, 4:17 PM EDT	Severe Thunderstorm Warning	JAX	Hamilton	28 min
Apr 25, 4:34 PM EDT	Severe Thunderstorm Warning	JAX	Columbia, Hamilton	26 min
Apr 25, 4:53 PM EDT	Severe Thunderstorm Warning	JAX	Baker, Columbia	37 min
Apr 25, 5:29 PM EDT	Severe Thunderstorm Warning	JAX	Baker, Duval, Nassau	31 min
Apr 25, 6:00 PM EDT	Severe Thunderstorm Warning	JAX	Duval, Saint Johns	30 min
Apr 25, 6:03 PM EDT	Special Marine Warning	JAX		87 min

Nearby

Tornado Warnings in Florida, 2015 Every tornado warning in 2015 Tornadoes in 2015

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.