Alert archive / Alabama / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 186, NWS Mobile, AL

July 14, 2011Baldwin County, Mobile County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Jul 14, 2011, 6:25 PM CDT for Baldwin County, Mobile County, Alabama. It was in force for 50 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
Jul 14, 2011, 6:25 PM CDT (23:25 UTC)
Expired
Jul 14, 2011, 7:15 PM CDT
In force
50 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

Counties Baldwin County, AL, Mobile County, AL

The radar

The Mobile radar (KMOB), 58 km from the middle of the area, began a volume at 23:28 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 12:00Z, 11.4 hours before the alert went out and 195 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 2011-07-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2292 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 12:00Z on 2011-07-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -40 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
2292 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
677 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
-40 m²/s²
0-3 km storm-relative helicity
-12 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.

267 
WUUS54 KMOB 142325
SVRMOB
ALC003-097-150015-
/O.NEW.KMOB.SV.W.0186.110714T2325Z-110715T0015Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
625 PM CDT THU JUL 14 2011

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN BALDWIN COUNTY IN SOUTHWEST ALABAMA...
  NORTHEASTERN MOBILE COUNTY IN SOUTHWEST ALABAMA...

* UNTIL 715 PM CDT

* AT 623 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED 21 MILES NORTHEAST OF
  CITRONELLE...OR NEAR MALCOLM...AND MOVING SOUTH AT 5 MPH.

&&

LAT...LON 3102 8806 3117 8798 3117 8794 3120 8794
      3119 8792 3120 8790 3121 8785 3101 8784
TIME...MOT...LOC 2326Z 011DEG 4KT 3118 8794

$$
2 follow-up statements
765 
WWUS54 KMOB 142351
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
651 PM CDT THU JUL 14 2011

ALC003-097-150015-
/O.CON.KMOB.SV.W.0186.000000T0000Z-110715T0015Z/
BALDWIN AL-MOBILE AL-
651 PM CDT THU JUL 14 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM CDT
FOR NORTHEASTERN MOBILE AND NORTHWESTERN BALDWIN COUNTIES...

AT 646 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR FORT STODDARD...OR 18
MILES NORTH OF CREOLA...MOVING SOUTH AT 5 MPH.

LAT...LON 3102 8806 3117 8798 3117 8794 3116 8792
      3112 8788 3101 8784
TIME...MOT...LOC 2351Z 011DEG 4KT 3113 8795

$$
512 
WWUS54 KMOB 150015
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
715 PM CDT THU JUL 14 2011

ALC003-097-150025-
/O.EXP.KMOB.SV.W.0186.000000T0000Z-110715T0015Z/
BALDWIN AL-MOBILE AL-
715 PM CDT THU JUL 14 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MOBILE AND
NORTHWESTERN BALDWIN COUNTIES HAS EXPIRED...

AT 715 PM CDT...THE STORM THAT PROMPTED THE WARNING HAS WEAKENED TO 
BELOW SEVERE LIMITS AND THE WARNING HAS BEEN ALLOWED TO EXPIRE.

LAT...LON 3102 8806 3117 8798 3117 8794 3116 8792
      3112 8788 3101 8784
TIME...MOT...LOC 0015Z 011DEG 4KT 3110 8796

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 14, 4:39 PM CDTSevere Thunderstorm WarningMOBMonroe39 min
Jul 14, 5:51 PM CDTAreal Flood AdvisoryMOBConecuh, Covington, Escambia114 min
Jul 14, 6:28 PM CDTAreal Flood AdvisoryMOBCovington2 hr

Nearby

Severe Thunderstorm Warnings in Alabama, 2011Every severe thunderstorm warning in 2011

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.