Alert archive / Florida / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 41, NWS Mobile, AL

April 7, 2014Escambia County, Okaloosa County, Santa Rosa County, Florida; Covington County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Apr 7, 2014, 8:40 AM CDT for Escambia County, Okaloosa County, Santa Rosa County, Florida; Covington County, Alabama. It was in force for 65 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 7, 2014, 8:40 AM CDT (13:40 UTC)
Expired: Apr 7, 2014, 9:45 AM CDT
In force: 65 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon

Counties Covington County, AL, Escambia County, FL, Okaloosa County, FL, Santa Rosa County, FL

The radar

The Eglin Afb radar (KEVX), 93 km from the middle of the area, began a volume at 13:43 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 7, 7:46 AM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 1.7 hours before the alert went out and 249 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: 7 J/kg
Mixed-layer CIN: -158 J/kg
Mixed-layer LCL: 1052 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 283 m²/s²
0-3 km storm-relative helicity: 339 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

491 
WUUS54 KMOB 071340
SVRMOB
ALC039-FLC033-091-113-071445-
/O.NEW.KMOB.SV.W.0041.140407T1340Z-140407T1445Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
840 AM CDT MON APR 7 2014

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN ESCAMBIA COUNTY IN NORTHWEST FLORIDA...
  OKALOOSA COUNTY IN NORTHWEST FLORIDA...
  SOUTHERN SANTA ROSA COUNTY IN NORTHWEST FLORIDA...
  SOUTHERN COVINGTON COUNTY IN SOUTH CENTRAL ALABAMA...

* UNTIL 945 AM CDT

* AT 840 AM CDT...A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING
  DAMAGING WINDS OVER 60 MPH WERE LOCATED ALONG A LINE EXTENDING FROM
  15 MILES NORTH OF CRESTVIEW TO 9 MILES SOUTHEAST OF ORANGE BEACH...
  AND MOVING EAST AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  PENSACOLA INTERNATIONAL AIRPORT...          MIDWAY...
  WOODLAWN BEACH...     TIGER POINT...        ROEVILLE...
  PEA RIDGE...          NAVARRE BEACH...      MULAT...
  HOLLEY...

THIS INCLUDES INTERSTATE 10 IN FLORIDA BETWEEN MILE MARKERS 13 AND
67.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE ARE DANGEROUS STORMS. PREPARE FOR DAMAGING WINDS. PEOPLE 
OUTSIDE SHOULD MOVE INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

TO REPORT SEVERE WEATHER...CALL (800) 284-9059.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 PM CDT MONDAY AFTERNOON
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA.

&&

LAT...LON 3098 8639 3065 8638 3039 8666 3029 8746
      3055 8717 3043 8717 3038 8726 3033 8726
      3034 8716 3036 8721 3037 8720 3042 8699
      3045 8695 3050 8703 3054 8703 3043 8710
      3057 8716 3123 8642 3122 8619 3100 8618
TIME...MOT...LOC 1340Z 269DEG 25KT 3098 8656 3024 8740

$$

1 follow-up statement

904 
WWUS54 KMOB 071422
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
922 AM CDT MON APR 7 2014

FLC033-071431-
/O.CAN.KMOB.SV.W.0041.000000T0000Z-140407T1445Z/
ESCAMBIA FL-
922 AM CDT MON APR 7 2014

...THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED FOR
SOUTHEASTERN ESCAMBIA COUNTY...

AT 921 AM CDT...THE STORM THAT PROMPTED THE WARNING FOR SOUTHEASTERN 
ESCAMBIA COUNTY HAS MOVED EAST OUT OF THE COUNTY...THUS THE SEVERE 
THUNDERSTORM WARNING HAS BEEN CANCELLED.

TO REPORT SEVERE WEATHER...CALL (800) 284-9059.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 PM CDT MONDAY AFTERNOON
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA.

LAT...LON 3099 8638 3098 8639 3065 8638 3039 8666
      3037 8689 3037 8692 3039 8687 3038 8702
      3045 8695 3051 8702 3069 8690 3122 8619
      3100 8619
TIME...MOT...LOC 1421Z 269DEG 25KT 3098 8623 3025 8707

$$

ALC039-FLC091-113-071445-
/O.CON.KMOB.SV.W.0041.000000T0000Z-140407T1445Z/
COVINGTON AL-OKALOOSA FL-SANTA ROSA FL-
922 AM CDT MON APR 7 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 AM CDT
FOR SOUTHEASTERN SANTA ROSA...OKALOOSA AND SOUTHEASTERN COVINGTON
COUNTIES...

AT 921 AM CDT...A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING
DAMAGING WINDS OVER 60 MPH WERE LOCATED ALONG A LINE EXTENDING FROM 4
MILES EAST OF FLORALA TO 9 MILES SOUTHEAST OF GULF BREEZE...MOVING
EAST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE...
  WOODLAWN BEACH...     NAVARRE BEACH...      HOLLEY...
  OCEAN CITY...         NAVARRE...            WRIGHT...
  MARY ESTHER...        LAUREL HILL...        CRESTVIEW...

THIS INCLUDES INTERSTATE 10 IN FLORIDA BETWEEN MILE MARKERS 33 AND
67.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE ARE DANGEROUS STORMS. PREPARE FOR DAMAGING WINDS. PEOPLE
OUTSIDE SHOULD MOVE INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

TO REPORT SEVERE WEATHER...CALL (800) 284-9059.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 PM CDT MONDAY AFTERNOON
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA.

&&

LAT...LON 3099 8638 3098 8639 3065 8638 3039 8666
      3037 8689 3037 8692 3039 8687 3038 8702
      3045 8695 3051 8702 3069 8690 3122 8619
      3100 8619
TIME...MOT...LOC 1421Z 269DEG 25KT 3098 8623 3025 8707

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 7, 6:49 AM CDT	Severe Thunderstorm Warning	MOB	Escambia, Santa Rosa	56 min
Apr 7, 8:04 AM CDT	Areal Flood Advisory	MOB	Escambia, Santa Rosa	116 min
Apr 7, 8:20 AM CDT	Severe Thunderstorm Warning	MOB	Escambia, Okaloosa, Santa Rosa	55 min
Apr 7, 8:28 AM CDT	Areal Flood Advisory	MOB	Escambia, Okaloosa, Santa Rosa	2 hr
Apr 7, 9:47 AM CDT	Severe Thunderstorm Warning	MOB	Okaloosa	28 min
Apr 7, 12:26 PM CDT	River Flood Warning	MOB	Escambia	6 days
Apr 6, 7:16 PM CDT	Severe Thunderstorm Warning	MOB	Butler, Crenshaw	74 min
Apr 6, 7:36 PM CDT	Severe Thunderstorm Warning	MOB	Butler, Crenshaw	24 min
Apr 6, 8:01 PM CDT	Severe Thunderstorm Warning	MOB	Crenshaw	14 min
Apr 6, 11:30 PM CDT	Areal Flood Warning	MOB	Butler, Choctaw, Clarke, Conecuh, Covington, Crenshaw and 3 more	12 hr
Apr 7, 3:22 AM CDT	Tornado Warning	MOB	Clarke, Washington	38 min
Apr 7, 3:50 AM CDT	Flash Flood Warning	MOB	Choctaw, Clarke, Conecuh, Monroe, Washington, Wilcox	4 hr
Apr 7, 3:50 AM CDT	Tornado Warning	MOB	Monroe, Wilcox	40 min
Apr 7, 4:41 AM CDT	Tornado Warning	MOB	Baldwin, Clarke, Mobile, Monroe	49 min
Apr 7, 4:58 AM CDT	Severe Thunderstorm Warning	MOB	Butler	62 min
Apr 7, 5:23 AM CDT	Severe Thunderstorm Warning	MOB	Mobile	52 min
Apr 7, 5:41 AM CDT	Areal Flood Advisory	MOB	Baldwin, Clarke, Mobile, Washington	2 hr
Apr 7, 6:08 AM CDT	Flash Flood Warning	MOB	Baldwin, Clarke, Mobile, Washington	112 min
Apr 7, 6:10 AM CDT	Tornado Warning	MOB	Butler, Conecuh, Monroe	50 min
Apr 7, 6:16 AM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Conecuh, Escambia, Monroe	44 min
Apr 7, 6:23 AM CDT	Special Marine Warning	MOB		97 min
Apr 7, 6:30 AM CDT	Flash Flood Warning	MOB	Baldwin, Clarke, Conecuh, Escambia, Monroe	2 hr
Apr 7, 6:43 AM CDT	Severe Thunderstorm Warning	MOB	Butler, Conecuh, Covington, Crenshaw, Escambia, Monroe	47 min
Apr 7, 7:36 AM CDT	Special Marine Warning	MOB		84 min
Apr 7, 8:35 AM CDT	Special Marine Warning	MOB		55 min
Apr 7, 8:56 AM CDT	Special Marine Warning	MOB		94 min
Apr 7, 9:29 AM CDT	Special Marine Warning	MOB		91 min
Apr 7, 10:45 AM CDT	Special Marine Warning	MOB		60 min

Nearby

Severe Thunderstorm Warnings in Florida, 2014 Severe Thunderstorm Warnings in Alabama, 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.