Alert archive / Florida / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 151, NWS Mobile, AL

November 2, 2015Okaloosa County, Florida

NWS Mobile, AL issued this severe thunderstorm warning at Nov 2, 2015, 5:22 AM CST for Okaloosa County, Florida. It was in force for 38 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: Nov 2, 2015, 5:22 AM CST (11:22 UTC)
Expired: Nov 2, 2015, 6:00 AM CST
In force: 38 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Okaloosa County, FL

The radar

The Eglin Afb radar (KEVX), 56 km from the middle of the area, began a volume at 11:26 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

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 11.4 hours before the alert went out and 209 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: 752 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 639 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 131 m²/s²
0-3 km storm-relative helicity: 181 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 4.5

Open this sounding in Storm Lab

The text

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

572 
WUUS54 KMOB 021122
SVRMOB
FLC091-021200-
/O.NEW.KMOB.SV.W.0151.151102T1122Z-151102T1200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
522 AM CST MON NOV 2 2015

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN OKALOOSA COUNTY IN NORTHWESTERN FLORIDA...

* UNTIL 600 AM CST

* AT 522 AM CST...A SEVERE THUNDERSTORM WAS LOCATED NEAR DESTIN...
  MOVING NORTHEAST AT 35 MPH.

  HAZARD...60 MPH WIND GUSTS. 

  SOURCE...RADAR INDICATED. 

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  NICEVILLE...DESTIN...VALPARAISO...EGLIN AFB...LAKE LORRAINE...
  POSTIL

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3038 8651 3043 8656 3043 8657 3040 8659
      3040 8656 3039 8653 3039 8661 3068 8639
      3045 8639 3046 8641 3044 8642 3040 8642
      3040 8639 3038 8640
TIME...MOT...LOC 1122Z 228DEG 29KT 3035 8654 

HAIL...<.75IN
WIND...60MPH
 
$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 1, 9:46 PM CST	River Flood Warning	MOB	Okaloosa	4 days
Nov 2, 4:12 AM CST	Special Weather Statement	MOB	Okaloosa	48 min
Nov 2, 4:21 AM CST	Severe Thunderstorm Warning	MOB	Okaloosa	39 min
Nov 2, 4:41 AM CST	Areal Flood Advisory	MOB	Santa Rosa	3 hr
Nov 2, 4:53 AM CST	Special Weather Statement	MOB	Okaloosa	52 min
Nov 2, 5:04 AM CST	Areal Flood Advisory	MOB	Okaloosa	3 hr
Nov 2, 7:21 AM CST	Dense Fog Advisory	MOB	Escambia, Santa Rosa	114 min
Nov 2, 8:52 AM CST	River Flood Warning	MOB	Okaloosa, Santa Rosa	23 hr

Nearby

Severe Thunderstorm Warnings in Florida, 2015 Every severe thunderstorm warning 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; radar from the NEXRAD Level II archive.