Alert archive / Alabama / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 130, NWS Mobile, AL

June 13, 2011Mobile County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Jun 13, 2011, 10:15 PM CDT for Mobile County, Alabama. It was in force for 45 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: Jun 13, 2011, 10:15 PM CDT (03:15 UTC)
Expired: Jun 13, 2011, 11:00 PM CDT
In force: 45 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon

County Mobile County, AL

The radar

The Mobile radar (KMOB), 39 km from the middle of the area, began a volume at 03:15 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, 3.3 hours before the alert went out and 137 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: 886 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 1738 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 91 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.

882 
WUUS54 KMOB 140315
SVRMOB
ALC097-140400-
/O.NEW.KMOB.SV.W.0130.110614T0315Z-110614T0400Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1015 PM CDT MON JUN 13 2011

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN MOBILE COUNTY IN SOUTHWEST ALABAMA...
  THIS INCLUDES THE CITIES OF...THEODORE...GRAND BAY...BAYOU LA
  BATRE...

* UNTIL 1100 PM CDT

* AT 1011 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 NEAR THEODORE...OR NEAR MOBILE
  GREYHOUND P...AND MOVING SOUTH AT 15 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  GRAND BAY AROUND 1025 PM CDT...
  BAYOU LA BATRE AROUND 1040 PM CDT...
  WEST END OF DAUPHIN AROUND 1100 PM CDT...

THIS INCLUDES INTERSTATE 10 BETWEEN MILE MARKERS 2 AND 14.

&&

LAT...LON 3022 8839 3038 8840 3059 8835 3057 8814
      3033 8815 3031 8821 3025 8816 3022 8831
      3024 8832 3027 8820 3032 8822 3034 8828
      3037 8827 3034 8824 3036 8819 3039 8836
      3038 8839 3021 8837
TIME...MOT...LOC 0315Z 008DEG 13KT 3049 8826

$$

The office that day

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

Issued	Product	Office	Lasted
Jun 13, 7:13 PM CDT	Special Marine Warning	MOB	47 min
Jun 13, 7:32 PM CDT	Special Marine Warning	MOB	88 min
Jun 13, 8:05 PM CDT	Special Marine Warning	MOB	40 min
Jun 13, 8:31 PM CDT	Special Marine Warning	MOB	44 min
Jun 13, 9:14 PM CDT	Special Marine Warning	MOB	91 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2011 Every 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.