Alert archive / Alabama / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 4, NWS Mobile, AL

February 7, 2013Mobile County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Feb 7, 2013, 7:18 AM CST for Mobile County, Alabama. It was in force for 42 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: Feb 7, 2013, 7:18 AM CST (13:18 UTC)
Expired: Feb 7, 2013, 8:00 AM CST
In force: 42 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon

County Mobile County, AL

The radar

The Mobile radar (KMOB), 25 km from the middle of the area, began a volume at 13:18 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, 1.3 hours before the alert went out and 146 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 493 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: -194 m²/s²
0-3 km storm-relative helicity: 445 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.

136 
WUUS54 KMOB 071318
SVRMOB
ALC097-071400-
/O.NEW.KMOB.SV.W.0004.130207T1318Z-130207T1400Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
718 AM CST THU FEB 7 2013

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

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

* UNTIL 800 AM CST

* AT 713 AM CST...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING
  WINDS OVER 60 MPH WAS LOCATED 4 MILES NORTHWEST OF BAYOU LA
  BATRE...OR 5 MILES NORTHWEST OF CODEN...AND MOVING NORTHEAST AT 45
  MPH.

* LOCATIONS IMPACTED INCLUDE...
  REGIONAL AIRPORT IN WEST MOBILE...          MIDTOWN MOBILE...
  DOWNTOWN MOBILE...    CODEN...              TILLMANS CORNER...
  THEODORE...           PRICHARD...           I65 AND US 45...
  I65 AND I165...

THIS INCLUDES INTERSTATE 10 BETWEEN MILE MARKERS 1 AND 28. THIS
INCLUDES INTERSTATE 65 BETWEEN MILE MARKERS 1 AND 9.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HEAVY RAINFALL IS ALSO OCCURRING WITH THESE STORMS...WHICH MAY
PRODUCE MINOR FLOODING ALONG LOW LYING AND POOR DRAINAGE AREAS. DO
NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 3033 8821 3035 8820 3037 8824 3035 8825
      3035 8827 3037 8826 3038 8829 3036 8830
      3039 8833 3039 8840 3074 8840 3076 8803
      3074 8801 3066 8801 3063 8805 3051 8809
      3039 8810 3031 8813
TIME...MOT...LOC 1317Z 220DEG 39KT 3048 8824

$$

1 follow-up statement

431 
WWUS54 KMOB 071338
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
738 AM CST THU FEB 7 2013

ALC097-071400-
/O.CON.KMOB.SV.W.0004.000000T0000Z-130207T1400Z/
MOBILE AL-
738 AM CST THU FEB 7 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 AM CST
FOR SOUTHERN MOBILE COUNTY...

AT 738 AM CST...A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING
DAMAGING WINDS OVER 60 MPH WERE LOCATED ALONG A LINE EXTENDING FROM 3
MILES WEST OF CHICKASAW TO 5 MILES EAST OF THEODORE TO 2 MILES SOUTH
OF BAYOU LA BATRE...MOVING NORTHEAST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE...
  REGIONAL AIRPORT IN WEST MOBILE...          MIDTOWN MOBILE...
  DOWNTOWN MOBILE...    CODEN...              TILLMANS CORNER...
  THEODORE...           PRICHARD...           I65 AND US 45...
  I65 AND I165...

THIS INCLUDES INTERSTATE 10 BETWEEN MILE MARKERS 3 AND 28. THIS
INCLUDES INTERSTATE 65 BETWEEN MILE MARKERS 1 AND 9.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE STORMS WILL BE CAPABLE OF PRODUCING DAMAGING WINDS. PEOPLE
OUTSIDE SHOULD MOVE INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS. 
HEAVY RAINFALL IS ALSO OCCURRING WITH THESE STORMS...WHICH MAY
PRODUCE MINOR FLOODING ALONG LOW LYING AND POOR DRAINAGE AREAS. DO
NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 3033 8821 3035 8820 3037 8824 3035 8827
      3037 8826 3038 8829 3036 8830 3039 8833
      3039 8839 3075 8831 3076 8803 3074 8801
      3068 8801 3057 8808 3039 8810 3031 8813
TIME...MOT...LOC 1336Z 244DEG 20KT 3076 8811 3056 8809
          3038 8823

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 7, 3:00 AM CST	Special Marine Warning	MOB		2 hr
Feb 7, 5:20 AM CST	Special Marine Warning	MOB		85 min
Feb 7, 6:39 AM CST	Special Marine Warning	MOB		111 min
Feb 7, 7:19 AM CST	Severe Thunderstorm Warning	MOB	Baldwin	56 min
Feb 7, 7:52 AM CST	Areal Flood Advisory	MOB	Mobile	113 min
Feb 7, 7:59 AM CST	Severe Thunderstorm Warning	MOB	Baldwin	46 min
Feb 7, 8:03 AM CST	Areal Flood Advisory	MOB	Baldwin	117 min
Feb 7, 8:27 AM CST	Special Marine Warning	MOB		2 hr
Feb 7, 8:29 AM CST	Special Marine Warning	MOB		2 hr
Feb 7, 10:29 AM CST	Special Marine Warning	MOB		31 min
Feb 7, 10:40 AM CST	Special Marine Warning	MOB		20 min
Feb 7, 11:00 AM CST	Special Marine Warning	MOB		15 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2013 Every severe thunderstorm warning in 2013

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.