Alert archive / Florida / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 130, NWS Mobile, AL

May 20, 2016Escambia County, Okaloosa County, Santa Rosa County, Florida

NWS Mobile, AL issued this severe thunderstorm warning at May 20, 2016, 2:30 AM CDT for Escambia County, Okaloosa County, Santa Rosa County, Florida. It was in force for 75 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
May 20, 2016, 2:30 AM CDT (07:30 UTC)
Expired
May 20, 2016, 3:45 AM CDT
In force
75 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

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

The radar

The Eglin Afb radar (KEVX), 84 km from the middle of the area, began a volume at 07:31 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.

What was reported inside it

TimeReportWhereRemark
May 20, 3:40 AM CDTTSTM WND DMG1 Wsw Destin, FLTREES DOWN ACROSS ROAD NEAR CALHOUN AND SIBERT AVE
May 20, 3:46 AM CDTTSTM WND DMG1 Nne Niceville, FLTREES DOWN NEAR 25 ST AND REDWOOD AVE

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

IssuedProductOfficeLasted
May 19, 10:52 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 7.5 hours before the alert went out and 238 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-pSkew-T log-p diagram, Tallahassee Rgnl, FL at 00:00Z on 2016-05-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2260 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tallahassee Rgnl, FL at 00:00Z on 2016-05-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 68 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
2260 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
939 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
68 m²/s²
0-3 km storm-relative helicity
68 m²/s²
Significant tornado parameter
0.5
Supercell composite
3.5

Open this sounding in Storm Lab

The text

As transmitted.

703 
WUUS54 KMOB 200730
SVRMOB
FLC033-091-113-200845-
/O.NEW.KMOB.SV.W.0130.160520T0730Z-160520T0845Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
230 AM CDT FRI MAY 20 2016

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL ESCAMBIA COUNTY IN NORTHWESTERN FLORIDA...
  SANTA ROSA COUNTY IN NORTHWESTERN FLORIDA...
  OKALOOSA COUNTY IN NORTHWESTERN FLORIDA...

* UNTIL 345 AM CDT

* AT 230 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM NEAR CENTURY TO 8 MILES SOUTH OF WARRINGTON...MOVING
  EAST AT 35 MPH.

  HAZARD...60 MPH WIND GUSTS. 

  SOURCE...RADAR INDICATED. 

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

* LOCATIONS IMPACTED INCLUDE...
  PENSACOLA...FERRY PASS...BRENT...WEST PENSACOLA...WRIGHT...FORT WALTON
  BEACH...ENSLEY...WARRINGTON...CRESTVIEW...NICEVILLE...GONZALEZ...DESTIN...
  EGLIN AFB...PACE...MILTON...VALPARAISO...GULF BREEZE...GOULDING...MARY
  ESTHER AND CENTURY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

LARGE HAIL AND DAMAGING WINDS AND CONTINUOUS CLOUD TO GROUND
LIGHTNING IS OCCURRING WITH THESE STORMS. MOVE INDOORS IMMEDIATELY.
LIGHTNING IS ONE OF NATURE'S LEADING KILLERS. REMEMBER...IF YOU CAN
HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING.

&&

LAT...LON 3022 8741 3100 8738 3099 8639 3046 8639
      3048 8633 3039 8633 3038 8650 3028 8650
      3028 8681 3022 8720
TIME...MOT...LOC 0730Z 268DEG 29KT 3099 8729 3027 8732 

HAIL...<.75IN
WIND...60MPH
 
$$
1 follow-up statement
934 
WWUS54 KMOB 200819
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
319 AM CDT FRI MAY 20 2016

FLC033-200828-
/O.CAN.KMOB.SV.W.0130.000000T0000Z-160520T0845Z/
ESCAMBIA FL-
319 AM CDT FRI MAY 20 2016

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL ESCAMBIA COUNTY IS
CANCELLED...

THE STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE WARNED
AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 500 AM CDT FOR
SOUTH CENTRAL ALABAMA...AND NORTHWESTERN FLORIDA.

LAT...LON 3027 8718 3033 8716 3037 8692 3034 8715
      3064 8704 3100 8709 3099 8639 3046 8639
      3047 8633 3039 8633 3038 8650 3028 8650
      3028 8681 3026 8692
TIME...MOT...LOC 0818Z 266DEG 36KT 3100 8689 3067 8679 3037 8682 

$$

FLC091-113-200845-
/O.CON.KMOB.SV.W.0130.000000T0000Z-160520T0845Z/
SANTA ROSA FL-OKALOOSA FL-
319 AM CDT FRI MAY 20 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 AM CDT
FOR SANTA ROSA AND OKALOOSA COUNTIES...

AT 318 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 10 MILES SOUTHEAST OF RIVERVIEW TO 10 MILES SOUTHWEST
OF BAKER TO NEAR NAVARRE BEACH...MOVING EAST AT 40 MPH.

HAZARD...60 MPH WIND GUSTS. 

SOURCE...RADAR INDICATED. 

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

LOCATIONS IMPACTED INCLUDE...
PENSACOLA...WRIGHT...FORT WALTON BEACH...CRESTVIEW...NICEVILLE...DESTIN...
EGLIN AFB...MILTON...VALPARAISO...MARY ESTHER...BAGDAD...OCEAN CITY...LAKE
LORRAINE...BAKER...ORIOLE BEACH...NAVARRE...SHALIMAR...LAUREL HILL...CINCO
BAYOU AND NAVARRE BEACH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
MOVE INDOORS IMMEDIATELY. LIGHTNING IS ONE OF NATURE'S LEADING
KILLERS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO
BE STRUCK BY LIGHTNING.

&&

LAT...LON 3027 8718 3033 8716 3037 8692 3034 8715
      3064 8704 3100 8709 3099 8639 3046 8639
      3047 8633 3039 8633 3038 8650 3028 8650
      3028 8681 3026 8692
TIME...MOT...LOC 0818Z 266DEG 36KT 3100 8689 3067 8679 3037 8682 

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

The office that day

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

IssuedProductOfficeCountiesLasted
May 20, 1:23 AM CDTSevere Thunderstorm WarningMOBEscambia, Santa Rosa67 min

Nearby

Severe Thunderstorm Warnings in Florida, 2016Every severe thunderstorm warning in 2016

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.