Alert archive / Alabama / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 128, NWS Mobile, AL

July 5, 2012Baldwin County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Jul 5, 2012, 6:42 PM CDT for Baldwin County, Alabama. It was in force for 41 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 5, 2012, 6:42 PM CDT (23:42 UTC)
Expired: Jul 5, 2012, 7:23 PM CDT
In force: 41 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon

County Baldwin County, AL

The radar

The Mobile radar (KMOB), 60 km from the middle of the area, began a volume at 23:42 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

Slidell Radar S, LA (KSIL), launched 12:00Z, 11.7 hours before the alert went out and 207 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2486 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 584 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: -12 m²/s²
0-3 km storm-relative helicity: 7 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.

749 
WUUS54 KMOB 052342
SVRMOB
ALC003-060045-
/O.NEW.KMOB.SV.W.0128.120705T2342Z-120706T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
642 PM CDT THU JUL 5 2012

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

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

* UNTIL 745 PM CDT

* AT 637 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING
  WINDS OVER 60 MPH WAS LOCATED 9 MILES EAST OF ROBERTSDALE...OR 10
  MILES NORTHEAST OF SUMMERDALE...AND MOVING NORTH AT 15 MPH.

* LOCATIONS IMPACTED INCLUDE...
  STAPLETON...          BAY MINETTE...

THIS INCLUDES INTERSTATE 10 BETWEEN MILE MARKERS 45 AND 63.

LAT...LON 3085 8790 3097 8761 3093 8760 3087 8763
      3086 8762 3085 8763 3078 8754 3074 8753
      3073 8752 3055 8744 3047 8763
TIME...MOT...LOC 2342Z 165DEG 14KT 3060 8757

$$

1 follow-up statement

050 
WWUS54 KMOB 060023
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
723 PM CDT THU JUL 5 2012

ALC003-060033-
/O.CAN.KMOB.SV.W.0128.000000T0000Z-120706T0045Z/
BALDWIN AL-
723 PM CDT THU JUL 5 2012

...THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED FOR SOUTHERN
BALDWIN COUNTY...

AT 718 PM CDT...THE STORM THAT PROMPTED THE WARNING FOR SOUTHERN
BALDWIN COUNTY HAS WEAKENED TO BELOW SEVERE LIMITS...THUS THE SEVERE
THUNDERSTORM WARNING HAS BEEN CANCELLED.

TO REPORT SEVERE WEATHER...CALL (800) 284-9059.

LAT...LON 3085 8790 3097 8761 3093 8760 3087 8763
      3086 8762 3085 8763 3078 8754 3074 8753
      3073 8752 3055 8744 3047 8763
TIME...MOT...LOC 0023Z 165DEG 14KT 3075 8762

$$

Nearby

Severe Thunderstorm Warnings in Alabama, 2012 Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.