Alert archive / Alabama / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 185, NWS Mobile, AL

July 14, 2011Monroe County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Jul 14, 2011, 4:39 PM CDT for Monroe County, Alabama. It was in force for 39 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, 4:39 PM CDT (21:39 UTC)
Expired
Jul 14, 2011, 5:18 PM CDT
In force
39 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

County Monroe County, AL

The radar

The Mobile radar (KMOB), 139 km from the middle of the area, began a volume at 21:42 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

Birmingham, AL (KBMX), launched 12:00Z, 9.7 hours before the alert went out and 174 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, Birmingham, AL at 12:00Z on 2011-07-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2065 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, Birmingham, AL at 12:00Z on 2011-07-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 11 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
2065 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
744 m above ground
0-6 km bulk shear
5 kt
0-1 km storm-relative helicity
11 m²/s²
0-3 km storm-relative helicity
24 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.

431 
WUUS54 KMOB 142139
SVRMOB
ALC099-142230-
/O.NEW.KMOB.SV.W.0185.110714T2139Z-110714T2230Z/

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

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTH CENTRAL MONROE COUNTY IN SOUTH CENTRAL ALABAMA...

* UNTIL 530 PM CDT

* AT 437 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 17 MILES NORTH OF MONROEVILLE...
  OR NEAR VREDENBURGH...AND MOVING SOUTHWEST AT 20 MPH.

&&

LAT...LON 3171 8720 3154 8758 3156 8756 3170 8756
      3171 8751 3181 8752 3184 8742 3184 8727
TIME...MOT...LOC 2139Z 067DEG 15KT 3176 8734

$$
2 follow-up statements
520 
WWUS54 KMOB 142155
SVSMOB

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

ALC099-142230-
/O.CON.KMOB.SV.W.0185.000000T0000Z-110714T2230Z/
MONROE AL-
455 PM CDT THU JUL 14 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CDT
FOR NORTH CENTRAL MONROE COUNTY...

AT 451 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 VREDENBURGH...OR 17
MILES NORTH OF MONROEVILLE...MOVING WEST AT 10 MPH.

LAT...LON 3171 8720 3154 8758 3156 8756 3170 8756
      3171 8751 3181 8752 3184 8742 3184 8727
TIME...MOT...LOC 2156Z 068DEG 11KT 3176 8738

$$
271 
WWUS54 KMOB 142218
SVSMOB

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

ALC099-142227-
/O.CAN.KMOB.SV.W.0185.000000T0000Z-110714T2230Z/
MONROE AL-
518 PM CDT THU JUL 14 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL MONROE COUNTY IS
CANCELLED...

AT 517 PM CDT...THE STORM THAT PROMPTED THE WARNING HAS WEAKENED TO 
BELOW SEVERE LIMITS...THUS THE WARNING HAS BEEN CANCELLED.

LAT...LON 3171 8720 3154 8758 3156 8756 3170 8756
      3171 8751 3181 8752 3184 8742 3184 8727
TIME...MOT...LOC 2217Z 068DEG 11KT 3174 8745

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 14, 5:51 PM CDTAreal Flood AdvisoryMOBConecuh, Covington, Escambia114 min
Jul 14, 6:25 PM CDTSevere Thunderstorm WarningMOBBaldwin, Mobile50 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.