Alert archive / Florida / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 65, NWS Mobile, AL

March 12, 2001Santa Rosa County, Florida

NWS Mobile, AL issued this severe thunderstorm warning at Mar 12, 2001, 12:30 PM CST for Santa Rosa County, Florida. It was in force for 45 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, 12:30 PM CST (18:30 UTC)
Expired: Mar 12, 2001, 1:15 PM CST
In force: 45 min
Issued by: NWS Mobile, AL
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Santa Rosa 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

Slidell Radar S, LA (KSIL), launched 12:00Z, 6.5 hours before the alert went out and 262 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: 1587 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 469 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 367 m²/s²
0-3 km storm-relative helicity: 453 m²/s²
Significant tornado parameter: 4.1
Supercell composite: 19.2

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KMOB 121831
SVRMOB
FLC113-121915-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1230 PM CST MON MAR 12 2001

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SANTA ROSA COUNTY IN NORTHWEST FLORIDA

* UNTIL 115 PM CST

* AT 1230 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM 21 MILES NORTH OF BERRYDALE TO 8
  MILES NORTHWEST OF CHUMUCKLA...MOVING SOUTHEAST AT 15 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  BERRYDALE...CHUMUCKLA BY 100 PM CST

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. REMAIN CALM BUT BE ALERT FOR RAPIDLY
CHANGING WEATHER CONDITIONS.

LAT...LON 3099 8709 3084 8729 3063 8721 3044 8680
          3097 8679

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, 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
Mar 12, 2:06 PM CST	Severe Thunderstorm Warning	MOB	Okaloosa	24 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.