Alert archive / Alabama / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 74, NWS Mobile, AL

May 30, 2012Mobile County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at May 30, 2012, 4:03 PM CDT for Mobile County, Alabama. It was in force for 57 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: May 30, 2012, 4:03 PM CDT (21:03 UTC)
Expired: May 30, 2012, 5:00 PM CDT
In force: 57 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon

County Mobile County, AL

The radar

The Mobile radar (KMOB), 45 km from the middle of the area, began a volume at 21:04 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, 9.1 hours before the alert went out and 179 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: 1642 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 674 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: 13 m²/s²
0-3 km storm-relative helicity: 23 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.

187 
WUUS54 KMOB 302103
SVRMOB
ALC097-302200-
/O.NEW.KMOB.SV.W.0074.120530T2103Z-120530T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
403 PM CDT WED MAY 30 2012

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

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

* UNTIL 500 PM CDT

* AT 359 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER
  SIZE HAIL AND DAMAGING WINDS OVER 60 MPH WAS LOCATED 8 MILES
  NORTHWEST OF CREOLA...OR 3 MILES WEST OF BUCKS...AND MOVING NORTH
  AT 5 MPH.

* LOCATIONS IMPACTED INCLUDE...
  MOVICO...             MOUNT VERNON...       BUCKS...

LAT...LON 3113 8814 3114 8797 3094 8801 3095 8816
TIME...MOT...LOC 2103Z 191DEG 6KT 3101 8807

$$

2 follow-up statements

715 
WWUS54 KMOB 302133
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
433 PM CDT WED MAY 30 2012

ALC097-302200-
/O.CON.KMOB.SV.W.0074.000000T0000Z-120530T2200Z/
MOBILE AL-
433 PM CDT WED MAY 30 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM CDT
FOR NORTHEASTERN MOBILE COUNTY...

AT 432 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER
SIZE HAIL AND DAMAGING WINDS OVER 60 MPH WAS LOCATED 9 MILES NORTH OF
CREOLA...OR 2 MILES WEST OF BUCKS...MOVING NORTH AT 5 MPH.

LOCATIONS IMPACTED INCLUDE...
  MOVICO...             MOUNT VERNON...       BUCKS...

LAT...LON 3113 8814 3114 8797 3094 8801 3095 8816
TIME...MOT...LOC 2133Z 191DEG 6KT 3102 8806

$$

254 
WWUS54 KMOB 302201
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
501 PM CDT WED MAY 30 2012

ALC097-302211-
/O.EXP.KMOB.SV.W.0074.000000T0000Z-120530T2200Z/
MOBILE AL-
501 PM CDT WED MAY 30 2012

...THE SEVERE THUNDERSTORM WARNING HAS BEEN ALLOWED TO EXPIRE FOR
NORTHEASTERN MOBILE COUNTY...

AT 459 PM CDT...THE STORM THAT PROMPTED THE WARNING FOR NORTHEASTERN
MOBILE COUNTY HAS WEAKENED TO BELOW SEVERE LIMITS...THUS THE SEVERE
THUNDERSTORM WARNING HAS BEEN ALLOWED TO EXPIRE.

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

LAT...LON 3113 8814 3114 8797 3094 8801 3095 8816
TIME...MOT...LOC 2133Z 191DEG 6KT 3102 8806

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 29, 9:32 PM CDT	Special Marine Warning	MOB		88 min
May 30, 2:23 AM CDT	Severe Thunderstorm Warning	MOB	Covington	37 min
May 30, 2:12 PM CDT	Special Marine Warning	MOB		93 min
May 30, 2:54 PM CDT	Severe Thunderstorm Warning	MOB	Mobile	66 min
May 30, 3:00 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin	60 min
May 30, 3:19 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Mobile	56 min
May 30, 4:12 PM CDT	Severe Thunderstorm Warning	MOB	Clarke	37 min
May 30, 4:16 PM CDT	Severe Thunderstorm Warning	MOB	Mobile	59 min
May 30, 4:21 PM CDT	Severe Thunderstorm Warning	MOB	Mobile	54 min
May 30, 5:06 PM CDT	Severe Thunderstorm Warning	MOB	Conecuh, Monroe	54 min
May 30, 5:14 PM CDT	Severe Thunderstorm Warning	MOB	Choctaw	24 min
May 30, 5:38 PM CDT	Severe Thunderstorm Warning	MOB	Clarke	67 min
May 30, 5:52 PM CDT	Severe Thunderstorm Warning	MOB	Monroe	29 min
May 30, 6:20 PM CDT	Severe Thunderstorm Warning	MOB	Covington, Escambia	32 min
May 30, 6:47 PM CDT	Severe Thunderstorm Warning	MOB	Choctaw	46 min

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.