Alert archive / Alabama / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 153, NWS Mobile, AL

July 30, 2012Baldwin County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Jul 30, 2012, 3:38 PM CDT for Baldwin County, Alabama. It was in force for 67 min. 1 report 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
Jul 30, 2012, 3:38 PM CDT (20:38 UTC)
Expired
Jul 30, 2012, 4:45 PM CDT
In force
67 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

County Baldwin County, AL

The radar

The Mobile radar (KMOB), 59 km from the middle of the area, began a volume at 20:41 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
Jul 30, 3:40 PM CDTHAIL 0.75Robertsdale, ALDIME SIZE HAIL REPORTED

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, 8.6 hours before the alert went out and 194 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 2012-07-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3604 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 2012-07-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -84 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
3604 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
631 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
-84 m²/s²
0-3 km storm-relative helicity
-18 m²/s²
Significant tornado parameter
0.0
Supercell composite
-4.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

501 
WUUS54 KMOB 302038
SVRMOB
ALC003-302145-
/O.NEW.KMOB.SV.W.0153.120730T2038Z-120730T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
338 PM CDT MON JUL 30 2012

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN BALDWIN COUNTY IN SOUTHWEST ALABAMA...

* UNTIL 445 PM CDT

* AT 332 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING
  WINDS OVER 60 MPH WAS LOCATED NEAR ROBERTSDALE...OR 3 MILES
  SOUTHEAST OF SILVERHILL...AND MOVING SOUTHEAST AT 40 MPH.

* LOCATIONS IMPACTED INCLUDE...
  PERDIDO BEACH...      ORANGE BEACH...       SUMMERDALE...
  SILVERHILL...         ROBERTSDALE...        POINT CLEAR...
  MAGNOLIA SPRINGS...   LOXLEY...             LILLIAN...

THIS INCLUDES INTERSTATE 10 BETWEEN MILE MARKERS 41 AND 66.

LAT...LON 3023 8794 3026 8795 3024 8787 3028 8777
      3037 8785 3041 8792 3048 8794 3054 8791
      3062 8793 3078 8755 3074 8753 3068 8741
      3064 8739 3052 8745 3046 8742 3036 8745
      3033 8751 3029 8751 3026 8759
TIME...MOT...LOC 2038Z 333DEG 34KT 3048 8768

$$
2 follow-up statements
749 
WWUS54 KMOB 302106
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
406 PM CDT MON JUL 30 2012

ALC003-302145-
/O.CON.KMOB.SV.W.0153.000000T0000Z-120730T2145Z/
BALDWIN AL-
406 PM CDT MON JUL 30 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM CDT
FOR SOUTHWESTERN BALDWIN COUNTY...

AT 359 PM CDT...A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING
DAMAGING WINDS OVER 60 MPH WERE LOCATED ALONG A LINE EXTENDING FROM 5
MILES SOUTHWEST OF GULF SHORES TO 4 MILES WEST OF POINT CLEAR...
MOVING SOUTHWEST AT 25 MPH.

LOCATIONS IMPACTED INCLUDE...
  ORANGE BEACH...       SUMMERDALE...         SILVERHILL...
  ROBERTSDALE...        POINT CLEAR...        MAGNOLIA SPRINGS...
  FOLEY...              FAIRHOPE...           ELBERTA...

LAT...LON 3023 8794 3026 8795 3024 8787 3028 8777
      3030 8777 3037 8785 3041 8792 3048 8794
      3054 8791 3062 8792 3064 8780 3056 8769
      3030 8751 3026 8759
TIME...MOT...LOC 2106Z 049DEG 22KT 3016 8777 3045 8802

$$
570 
WWUS54 KMOB 302125
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
425 PM CDT MON JUL 30 2012

ALC003-302145-
/O.CON.KMOB.SV.W.0153.000000T0000Z-120730T2145Z/
BALDWIN AL-
425 PM CDT MON JUL 30 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM CDT
FOR SOUTHWESTERN BALDWIN COUNTY...

AT 417 PM CDT...A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING
DAMAGING WINDS OVER 60 MPH WERE LOCATED ALONG A LINE EXTENDING FROM 8
MILES WEST OF GULF SHORES TO 8 MILES SOUTH OF POINT CLEAR TO 4 MILES
SOUTHEAST OF THEODORE...MOVING SOUTHWEST AT 10 MPH.

LOCATIONS IMPACTED INCLUDE...
  RURAL SOUTHWESTERN BALDWIN COUNTY AND THE FORT MORGAN PENINSULA.

LAT...LON 3044 8783 3025 8769 3023 8794 3026 8795
      3024 8787 3028 8777 3030 8777 3037 8785
      3041 8792 3048 8794
TIME...MOT...LOC 2125Z 039DEG 9KT 3027 8785 3035 8798
          3049 8814

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 30, 10:28 AM CDTHeat AdvisoryMOB5 hr
Jul 30, 12:52 PM CDTSpecial Marine WarningMOB68 min
Jul 30, 1:25 PM CDTSpecial Marine WarningMOB65 min
Jul 30, 2:02 PM CDTSpecial Marine WarningMOB88 min
Jul 30, 2:27 PM CDTSevere Thunderstorm WarningMOBMobile, Washington17 min
Jul 30, 2:28 PM CDTSpecial Marine WarningMOB92 min
Jul 30, 2:34 PM CDTSpecial Marine WarningMOB86 min
Jul 30, 2:49 PM CDTSevere Thunderstorm WarningMOBBaldwin56 min
Jul 30, 3:03 PM CDTSpecial Marine WarningMOB87 min
Jul 30, 3:04 PM CDTSevere Thunderstorm WarningMOBBaldwin56 min
Jul 30, 3:30 PM CDTSpecial Marine WarningMOB90 min
Jul 30, 4:03 PM CDTSpecial Marine WarningMOB87 min
Jul 30, 4:14 PM CDTSevere Thunderstorm WarningMOBMobile61 min
Jul 30, 4:53 PM CDTSpecial Marine WarningMOB97 min
Jul 30, 5:11 PM CDTSevere Thunderstorm WarningMOBCovington64 min
Jul 30, 5:21 PM CDTSevere Thunderstorm WarningMOBEscambia54 min
Jul 30, 6:34 PM CDTSevere Thunderstorm WarningMOBCovington47 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2012Every severe thunderstorm warning in 2012

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.