Alert archive / Florida / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 68, NWS Mobile, AL

April 15, 2021Escambia County, Florida; Baldwin County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Apr 15, 2021, 7:45 AM CDT for Escambia County, Florida; Baldwin County, Alabama. It was in force for 45 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
Apr 15, 2021, 7:45 AM CDT (12:45 UTC)
Expired
Apr 15, 2021, 8:30 AM CDT
In force
45 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Baldwin County, AL, Escambia County, FL

The radar

The Mobile radar (KMOB), 76 km from the middle of the area, began a volume at 12:47 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
Apr 15, 7:56 AM CDTHAIL 12 Wsw Foley, ALCORRECTS PREVIOUS HAIL REPORT FROM 2 WSW FOLEY. REPORT OF QUARTER-SIZE HAIL IN SOUTHWEST FOLEY. TIME AND LOCATION GIVEN BY LOCAL POLICE.
Apr 15, 7:56 AM CDTHAIL 12 Wsw Foley, ALREPORT OF QUARTER-SIZE HAIL IN SOUTHWEST FOLEY. TIME AND LOCATION GIVEN FROM LOCATION GIVEN BY LOCAL POLICE.

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

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 0.8 hours before the alert went out and 203 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, Slidell Radar S, LA at 12:00Z on 2021-04-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 231 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 12:00Z on 2021-04-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 317 square meters per square second.19395878Sfc1 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
231 J/kg
Mixed-layer CIN
-168 J/kg
Mixed-layer LCL
440 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
317 m²/s²
0-3 km storm-relative helicity
375 m²/s²
Significant tornado parameter
0.0
Supercell composite
8.6

Open this sounding in Storm Lab

The text

As transmitted.

339 
WUUS54 KMOB 151245
SVRMOB
ALC003-FLC033-151330-
/O.NEW.KMOB.SV.W.0068.210415T1245Z-210415T1330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
745 AM CDT Thu Apr 15 2021

The National Weather Service in Mobile has issued a

* Severe Thunderstorm Warning for...
  Southern Baldwin County in southwestern Alabama...
  South central Escambia County in northwestern Florida...

* Until 830 AM CDT.

* At 745 AM CDT, severe thunderstorms were located along a line
  extending from 5 miles east of Point Clear to 6 miles southwest of
  Magnolia Springs to 4 miles northeast of Fort Morgan, moving east
  at 35 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Warrington, Gulf Shores, Foley, Orange Beach, Lillian, Myrtle
  Grove, Magnolia Springs, Bon Secour, Summerdale, Perdido Beach,
  Elberta and Fort Morgan.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3041 8722 3012 8728 2995 8750 3023 8808
      3035 8792 3057 8789
TIME...MOT...LOC 1245Z 292DEG 32KT 3048 8783 3033 8786 3026 8795 

HAIL...1.00IN
WIND...60MPH
 
$$

JLH
2 follow-up statements
295 
WWUS54 KMOB 151304
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
804 AM CDT Thu Apr 15 2021

FLC033-151314-
/O.CAN.KMOB.SV.W.0068.000000T0000Z-210415T1330Z/
Escambia FL-
804 AM CDT Thu Apr 15 2021

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

The storms which prompted the warning have weakened. Therefore, the 
warning has been cancelled.

LAT...LON 3022 8790 3031 8780 3044 8778 3035 8742
      3033 8744 3032 8742 3032 8750 3031 8744
      3030 8745 3029 8749 3030 8741 3031 8743
      3031 8740 3032 8738 3033 8733 3031 8724
      3022 8726
TIME...MOT...LOC 1304Z 300DEG 38KT 3038 8766 3023 8769 3016 8778 

$$

ALC003-151330-
/O.CON.KMOB.SV.W.0068.000000T0000Z-210415T1330Z/
Baldwin AL-
804 AM CDT Thu Apr 15 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 AM CDT
FOR SOUTHEASTERN BALDWIN COUNTY...

At 804 AM CDT, severe thunderstorms were located along a line
extending from near Foley to Gulf Shores to 11 miles south of Bon
Secour, moving southeast at 45 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Gulf Shores, Foley, Orange Beach, Magnolia Springs, Bon Secour and
Perdido Beach.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3022 8790 3031 8780 3044 8778 3035 8742
      3033 8744 3032 8742 3032 8750 3031 8744
      3030 8745 3029 8749 3030 8741 3031 8743
      3031 8740 3032 8738 3033 8733 3031 8724
      3022 8726
TIME...MOT...LOC 1304Z 300DEG 38KT 3038 8766 3023 8769 3016 8778 

HAIL...1.00IN
WIND...60MPH
 
$$

JLH
450 
WWUS54 KMOB 151333
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
833 AM CDT Thu Apr 15 2021

ALC003-151342-
/O.EXP.KMOB.SV.W.0068.000000T0000Z-210415T1330Z/
Baldwin AL-
833 AM CDT Thu Apr 15 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BALDWIN COUNTY
HAS EXPIRED...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning has been allowed to expire.  However heavy
rain is still possible with these thunderstorms.

LAT...LON 3022 8790 3031 8780 3044 8778 3035 8742
      3033 8744 3032 8742 3032 8750 3031 8744
      3030 8745 3029 8749 3030 8741 3031 8743
      3031 8740 3032 8738 3033 8733 3031 8724
      3022 8726
TIME...MOT...LOC 1332Z 292DEG 32KT 3029 8740 3014 8743 3007 8752 

$$

JLH

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 14, 7:13 PM CDTSpecial Marine WarningMOB62 min
Apr 14, 8:24 PM CDTSpecial Marine WarningMOB96 min
Apr 14, 10:00 PM CDTSpecial Marine WarningMOB97 min
Apr 15, 2:17 AM CDTSpecial Weather StatementMOBWashington43 min
Apr 15, 3:05 AM CDTSpecial Marine WarningMOB55 min
Apr 15, 3:23 AM CDTSpecial Weather StatementMOBMobile52 min
Apr 15, 3:42 AM CDTSmall Craft AdvisoryMOB11 hr
Apr 15, 3:48 AM CDTSevere Thunderstorm WarningMOBBaldwin, Mobile42 min
Apr 15, 4:00 AM CDTSpecial Marine WarningMOB45 min
Apr 15, 4:52 AM CDTAreal Flood AdvisoryMOBMobile113 min
Apr 15, 5:00 AM CDTSpecial Marine WarningMOB60 min
Apr 15, 5:13 AM CDTSpecial Weather StatementMOBWashington47 min
Apr 15, 5:19 AM CDTSpecial Weather StatementMOBMobile41 min
Apr 15, 5:23 AM CDTSpecial Marine WarningMOB97 min
Apr 15, 5:55 AM CDTSpecial Marine WarningMOB95 min
Apr 15, 6:31 AM CDTAreal Flood AdvisoryMOBBaldwin, Mobile119 min
Apr 15, 6:36 AM CDTAreal Flood AdvisoryMOBBaldwin, Mobile114 min
Apr 15, 7:01 AM CDTSpecial Marine WarningMOB119 min
Apr 15, 7:04 AM CDTSpecial Weather StatementMOBBaldwin41 min
Apr 15, 7:06 AM CDTSpecial Marine WarningMOB39 min
Apr 15, 7:36 AM CDTFlash Flood WarningMOBBaldwin, Mobile3 hr
Apr 15, 7:40 AM CDTSpecial Marine WarningMOB95 min
Apr 15, 7:51 AM CDTSpecial Marine WarningMOB84 min
Apr 15, 7:52 AM CDTSpecial Weather StatementMOBMobile53 min
Apr 15, 8:05 AM CDTSpecial Weather StatementMOBMobile40 min
Apr 15, 8:11 AM CDTSpecial Marine WarningMOB2 hr
Apr 15, 8:52 AM CDTSpecial Marine WarningMOB83 min
Apr 15, 9:45 AM CDTAreal Flood WarningMOBMobile12 hr
Apr 15, 10:14 AM CDTSpecial Marine WarningMOB61 min
Apr 15, 10:48 AM CDTFlash Flood WatchMOBBaldwin, Mobile, Washington62 hr
Apr 15, 11:50 AM CDTAreal Flood WarningMOBBaldwin6 hr

Nearby

Severe Thunderstorm Warnings in Florida, 2021Severe Thunderstorm Warnings in Alabama, 2021Every severe thunderstorm warning in 2021

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.