Alert archive / Alabama / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 5, NWS Mobile, AL

January 26, 2012Washington County, Alabama; Greene County, Mississippi

NWS Mobile, AL issued this severe thunderstorm warning at Jan 26, 2012, 9:15 AM CST for Washington County, Alabama; Greene County, Mississippi. It was in force for 38 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
Jan 26, 2012, 9:15 AM CST (15:15 UTC)
Expired
Jan 26, 2012, 9:53 AM CST
In force
38 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

Counties Washington County, AL, Greene County, MS

The radar

The Mobile radar (KMOB), 63 km from the middle of the area, began a volume at 15:15 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.

What was reported inside it

TimeReportWhereRemark
Jan 26, 9:36 AM CSTHAIL 0.251 E Leakesville, MSPUBLIC REPORTED NICKEL SIZE HAIL 1 MILE EAST OF LEAKESVILLE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jan 26, 4:18 AM CSTTornado WatchSPC7 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 3.3 hours before the alert went out and 155 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 2012-01-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1176 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 2012-01-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 354 square meters per square second.19395878Sfc1 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
1176 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
461 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
354 m²/s²
0-3 km storm-relative helicity
359 m²/s²
Significant tornado parameter
2.6
Supercell composite
10.4

Open this sounding in Storm Lab

The text

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

140 
WUUS54 KMOB 261515
SVRMOB
ALC129-MSC041-261615-
/O.NEW.KMOB.SV.W.0005.120126T1515Z-120126T1615Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
915 AM CST THU JAN 26 2012

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN GREENE COUNTY IN SOUTHEAST MISSISSIPPI...
  SOUTHWESTERN WASHINGTON COUNTY IN SOUTHWEST ALABAMA...

* UNTIL 1015 AM CST

* AT 910 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED 8 MILES SOUTH OF LEAKESVILLE...
  OR 14 MILES EAST OF MCLAIN...AND MOVING NORTHEAST AT 45 MPH.

* LOCATIONS IMPACTED INCLUDE...
  LEAKESVILLE...        VINEGAR BEND...       TIBBIE...
  FRUITDALE...          DEER PARK...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. IF A TORNADO
IS SPOTTED... ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY
STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

A TORNADO WATCH REMAINS IN EFFECT UNTIL NOON CST THURSDAY FOR
SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST MISSISSIPPI.

&&

LAT...LON 3142 8872 3141 8818 3111 8840 3111 8843
      3106 8843 3103 8846 3103 8870
TIME...MOT...LOC 1515Z 209DEG 40KT 3109 8856

$$
1 follow-up statement
044 
WWUS54 KMOB 261553
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
953 AM CST THU JAN 26 2012

ALC129-MSC041-261603-
/O.CAN.KMOB.SV.W.0005.000000T0000Z-120126T1615Z/
WASHINGTON AL-GREENE MS-
953 AM CST THU JAN 26 2012

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN GREENE AND
SOUTHWESTERN WASHINGTON COUNTIES IS CANCELLED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL NOON CST THURSDAY FOR
SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST MISSISSIPPI.
A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL 500 PM CST THURSDAY
AFTERNOON FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA.

LAT...LON 3142 8872 3141 8818 3111 8840 3111 8843
      3106 8843 3103 8846 3103 8870
TIME...MOT...LOC 1553Z 209DEG 40KT 3146 8832

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 26, 8:56 AM CSTTornado WarningMOBChoctaw, Washington49 min
Jan 26, 9:20 AM CSTTornado WarningMOBWashington40 min
Jan 26, 9:33 AM CSTTornado WarningMOBChoctaw57 min
Jan 26, 9:41 AM CSTSpecial Marine WarningMOB2 hr
Jan 26, 9:49 AM CSTAreal Flood AdvisoryMOBBaldwin, Choctaw, Clarke, Escambia, Mobile, Monroe and 2 more116 min
Jan 26, 9:50 AM CSTSmall Craft AdvisoryMOB23 hr
Jan 26, 11:03 AM CSTSpecial Marine WarningMOB117 min
Jan 26, 11:11 AM CSTTornado WarningMOBBaldwin, Mobile21 min
Jan 26, 11:57 AM CSTSevere Thunderstorm WarningMOBMonroe, Wilcox27 min
Jan 26, 12:05 PM CSTAreal Flood AdvisoryMOBBaldwin, Butler, Clarke, Conecuh, Covington, Crenshaw and 3 more4 hr
Jan 26, 12:49 PM CSTSpecial Marine WarningMOB56 min
Jan 26, 1:36 PM CSTSevere Thunderstorm WarningMOBCovington39 min
Jan 26, 1:38 PM CSTRiver Flood WarningMOBChoctaw, Clarke, Washington6 days
Jan 26, 1:38 PM CSTRiver Flood WarningMOBChoctaw, Clarke, Washington6 days
Jan 26, 1:44 PM CSTSpecial Marine WarningMOB46 min
Jan 26, 7:51 AM CSTSevere Thunderstorm WarningMOBPerry54 min
Jan 26, 8:36 AM CSTSevere Thunderstorm WarningMOBGeorge, Stone39 min
Jan 26, 8:42 AM CSTSevere Thunderstorm WarningMOBWayne63 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2012Severe Thunderstorm Warnings in Mississippi, 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.