Alert archive / Florida / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 74, NWS Mobile, AL

March 12, 2001Okaloosa County, Florida

NWS Mobile, AL issued this severe thunderstorm warning at Mar 12, 2001, 2:06 PM CST for Okaloosa County, Florida. It was in force for 24 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: Mar 12, 2001, 2:06 PM CST (20:06 UTC)
Expired: Mar 12, 2001, 2:30 PM CST
In force: 24 min
Issued by: NWS Mobile, AL
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Okaloosa 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
Mar 12, 11:30 AM CST	Tornado Watch	SPC	4 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 8.1 hours before the alert went out and 219 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 946 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 166 m²/s²
0-3 km storm-relative helicity: 232 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KMOB 122007
SVRMOB
FLC091-122030-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
206 PM CST MON MAR 12 2001

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  OKALOOSA COUNTY IN NORTHWEST FLORIDA

* UNTIL 230 PM CST

* AT 206 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM NEAR DORCAS TO 16 MILES SOUTH OF
  GALLIVER...MOVING SOUTH AT 10 MPH.

* THE SEVERE STORMS WILL REMAIN OVER MAINLY RURAL AREAS OF           
  SOUTHERN OKALOOSA COUNTY.

STRONG DAMAGING WIND...LARGE HAIL...AND HEAVY RAIN ARE LIKELY WITH
THESE STORMS.  IF IN THE PATH OF THESE STORMS...TAKE COVER IN A
STURDY SHELTER UNTIL THE STORMS HAVE PASSED.

A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER...
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH
LITTLE OR NO ADVANCE WARNING. RE4MAIN CALM BUT BE ALERT FOR RAPIDLY
CHANGING WEATHER CONDITIONS.

LAT...LON 3098 8639 3070 8678 3042 8678 3063 8640

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 12, 3:01 AM CST	Severe Thunderstorm Warning	MOB	Escambia, Santa Rosa	29 min
Mar 12, 3:31 AM CST	Severe Thunderstorm Warning	MOB	Okaloosa, Santa Rosa	29 min
Mar 12, 12:12 PM CST	Severe Thunderstorm Warning	MOB	Escambia	48 min
Mar 12, 12:30 PM CST	Severe Thunderstorm Warning	MOB	Santa Rosa	45 min
Mar 12, 1:02 PM CST	Severe Thunderstorm Warning	MOB	Escambia	28 min
Mar 12, 1:11 PM CST	Severe Thunderstorm Warning	MOB	Okaloosa	49 min
Mar 12, 1:17 PM CST	Severe Thunderstorm Warning	MOB	Santa Rosa	43 min

Nearby

Severe Thunderstorm Warnings in Florida, 2001 Every severe thunderstorm warning in 2001

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.