Alert archive / Florida / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 188, NWS Mobile, AL

September 11, 2016Escambia County, Alabama; Escambia County, Santa Rosa County, Florida

NWS Mobile, AL issued this severe thunderstorm warning at Sep 11, 2016, 7:56 PM CDT for Escambia County, Alabama; Escambia County, Santa Rosa County, Florida. It was in force for 33 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
Sep 11, 2016, 7:56 PM CDT (00:56 UTC)
Expired
Sep 11, 2016, 8:29 PM CDT
In force
33 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

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

The radar

The Mobile radar (KMOB), 92 km from the middle of the area, began a volume at 00:58 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

Slidell Radar S, LA (KSIL), launched 00:00Z, 0.9 hours before the alert went out and 239 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 00:00Z on 2016-09-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1110 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, Slidell Radar S, LA at 00:00Z on 2016-09-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 1 square meters per square second.1939Sfc1 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
1110 J/kg
Mixed-layer CIN
-49 J/kg
Mixed-layer LCL
1057 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
1 m²/s²
0-3 km storm-relative helicity
56 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

709 
WUUS54 KMOB 120056
SVRMOB
ALC053-FLC033-113-120145-
/O.NEW.KMOB.SV.W.0188.160912T0056Z-160912T0145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
756 PM CDT SUN SEP 11 2016

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTH CENTRAL ESCAMBIA COUNTY IN SOUTH CENTRAL ALABAMA...
  NORTH CENTRAL ESCAMBIA COUNTY IN NORTHWESTERN FLORIDA...
  NORTHWESTERN SANTA ROSA COUNTY IN NORTHWESTERN FLORIDA...

* UNTIL 845 PM CDT

* AT 756 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR BRATT...OR
  NEAR CENTURY...MOVING NORTHEAST AT 15 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...
  CENTURY...FLOMATON AND BRATT. 

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 THIS STORM. 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.

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 3079 8736 3094 8748 3110 8726 3089 8712
TIME...MOT...LOC 0056Z 236DEG 14KT 3091 8735 

HAIL...1.00IN
WIND...60MPH
 
$$
1 follow-up statement
805 
WWUS54 KMOB 120129
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
829 PM CDT SUN SEP 11 2016

ALC053-FLC033-113-120139-
/O.CAN.KMOB.SV.W.0188.000000T0000Z-160912T0145Z/
ESCAMBIA AL-ESCAMBIA FL-SANTA ROSA FL-
829 PM CDT SUN SEP 11 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL ESCAMBIA...NORTH
CENTRAL ESCAMBIA AND NORTHWESTERN SANTA ROSA COUNTIES IS CANCELLED...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE...THE WARNING HAS BEEN CANCELLED.  HOWEVER HEAVY RAIN IS
STILL POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 3079 8736 3094 8748 3110 8726 3089 8712
TIME...MOT...LOC 0126Z 236DEG 14KT 3097 8724 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 11, 7:43 PM CDTSpecial Weather StatementMOBEscambia47 min
Sep 12, 1:32 PM CDTSpecial Marine WarningMOB58 min
Sep 12, 1:34 PM CDTSpecial Weather StatementMOBBaldwin56 min
Sep 12, 2:24 PM CDTSpecial Marine WarningMOB36 min
Sep 12, 2:46 PM CDTSpecial Weather StatementMOBMobile44 min
Sep 12, 3:45 PM CDTSpecial Weather StatementMOBButler45 min
Sep 12, 4:20 PM CDTSpecial Weather StatementMOBConecuh40 min
Sep 12, 4:37 PM CDTSpecial Weather StatementMOBEscambia23 min
Sep 12, 1:42 PM CDTSpecial Weather StatementMOBOkaloosa48 min
Sep 12, 2:10 PM CDTSpecial Weather StatementMOBSanta Rosa50 min
Sep 12, 2:11 PM CDTSpecial Weather StatementMOBOkaloosa49 min
Sep 12, 3:17 PM CDTSpecial Weather StatementMOBOkaloosa43 min

Nearby

Severe Thunderstorm Warnings in Florida, 2016Severe Thunderstorm Warnings in Alabama, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.