Alert archive / Alabama / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 21, NWS Birmingham, AL

March 31, 2016Sumter County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Mar 31, 2016, 7:34 PM CDT for Sumter 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
Mar 31, 2016, 7:34 PM CDT (00:34 UTC)
Expired
Mar 31, 2016, 8:15 PM CDT
In force
41 min
Issued by
NWS Birmingham, AL
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

County Sumter County, AL

The radar

The Birmingham radar (KBMX), 133 km from the middle of the area, began a volume at 00:37 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 watch it was issued in

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

IssuedProductOfficeLasted
Mar 31, 5:58 PM CDTTornado WatchSPC7 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 0.6 hours before the alert went out and 133 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, Birmingham, AL at 00:00Z on 2016-04-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 693 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 00:00Z on 2016-04-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 294 square meters per square second.1939587897117Sfc1 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
693 J/kg
Mixed-layer CIN
-22 J/kg
Mixed-layer LCL
764 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
294 m²/s²
0-3 km storm-relative helicity
366 m²/s²
Significant tornado parameter
1.2
Supercell composite
6.4

Open this sounding in Storm Lab

The text

As transmitted.

285 
WUUS54 KBMX 010034
SVRBMX
ALC119-010115-
/O.NEW.KBMX.SV.W.0021.160401T0034Z-160401T0115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
734 PM CDT THU MAR 31 2016

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SUMTER COUNTY IN WEST CENTRAL ALABAMA...

* UNTIL 815 PM CDT

* AT 734 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM NEAR ELECTRIC MILLS TO NEAR TAMOLA TO NEAR TOOMSUBA...
  MOVING EAST AT 55 MPH.

  HAZARD...60 MPH WIND GUSTS. 

  SOURCE...RADAR INDICATED. 

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  LIVINGSTON...YORK...CUBA...GAINESVILLE...EPES...EMELLE...COATOPA...
  BLUFFPORT...THE UNIVERSITY OF WEST ALABAMA...DUG HILL...BOYD...GEIGER...
  WARSAW...PAYNEVILLE...LILITA...BELMONT...DEMOPOLIS LOCK AND DAM...OLD
  MALLARD AIRPORT...MCDOWELL AND BELLAMY.

THIS INCLUDES INTERSTATE 20 BETWEEN MILE MARKERS 1 AND 23.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CDT FOR SOUTHWESTERN
ALABAMA.

LAT...LON 3291 8835 3298 8817 3292 8821 3285 8817
      3284 8818 3279 8806 3277 8811 3272 8808
      3269 8812 3269 8804 3262 8808 3259 8806
      3263 8793 3262 8786 3261 8784 3259 8790
      3252 8784 3252 8791 3245 8800 3241 8841
TIME...MOT...LOC 0034Z 254DEG 46KT 3278 8850 3263 8845 3245 8854 

HAIL...<.75IN
WIND...60MPH
 
$$

87/GRANTHAM
1 follow-up statement
894 
WWUS54 KBMX 010055
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
755 PM CDT THU MAR 31 2016

ALC119-010115-
/O.CON.KBMX.SV.W.0021.000000T0000Z-160401T0115Z/
SUMTER AL-
755 PM CDT THU MAR 31 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM CDT
FOR CENTRAL SUMTER COUNTY...

AT 755 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM NEAR GAINESVILLE TO NEAR EPES TO NEAR YORK...MOVING
EAST AT 55 MPH.

HAZARD...60 MPH WIND GUSTS. 

SOURCE...RADAR INDICATED. 

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

LOCATIONS IMPACTED INCLUDE...
LIVINGSTON...YORK...CUBA...GAINESVILLE...EPES...COATOPA...BLUFFPORT...THE
UNIVERSITY OF WEST ALABAMA...DUG HILL...WARSAW...LILITA...BELMONT...
DEMOPOLIS LOCK AND DAM...OLD MALLARD AIRPORT...MCDOWELL...BELLAMY AND
SUMTERVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CDT FOR SOUTHWESTERN
ALABAMA.

LAT...LON 3269 8826 3290 8829 3294 8820 3283 8818
      3279 8806 3277 8811 3272 8808 3269 8812
      3269 8804 3263 8808 3260 8807 3263 8793
      3262 8786 3261 8784 3261 8788 3259 8790
      3252 8784 3252 8791 3245 8800 3241 8841
TIME...MOT...LOC 0055Z 254DEG 46KT 3285 8822 3270 8817 3252 8826 

HAIL...<.75IN
WIND...60MPH
 
$$

87/GRANTHAM

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 31, 7:02 PM CDTTornado WarningBMXFayette43 min
Mar 31, 7:22 PM CDTSevere Thunderstorm WarningBMXWinston9 min
Mar 31, 7:29 PM CDTTornado WarningBMXMarion, Walker46 min
Mar 31, 7:56 PM CDTSevere Thunderstorm WarningBMXGreene, Pickens49 min
Mar 31, 7:59 PM CDTTornado WarningBMXFayette, Walker46 min
Mar 31, 8:05 PM CDTSevere Thunderstorm WarningBMXTuscaloosa55 min
Mar 31, 8:24 PM CDTSevere Thunderstorm WarningBMXHale51 min
Mar 31, 9:17 PM CDTTornado WarningBMXBlount, Jefferson32 min
Mar 31, 9:30 PM CDTAreal Flood AdvisoryBMXAutauga, Dallas, Lowndes3 hr
Mar 31, 10:42 PM CDTFlash Flood WarningBMXAutauga, Dallas, Elmore, Lowndes, Montgomery3 hr
Mar 31, 11:07 PM CDTRiver Flood WarningBMXMontgomery69 hr
Mar 31, 11:17 PM CDTSevere Thunderstorm WarningBMXElmore, Macon, Montgomery, Tallapoosa43 min
Mar 31, 11:55 PM CDTSpecial Weather StatementBMXLee, Macon65 min
Apr 1, 12:14 AM CDTSpecial Weather StatementBMXPickens46 min
Apr 1, 1:03 AM CDTSpecial Weather StatementBMXPerry42 min
Apr 1, 1:53 AM CDTSpecial Weather StatementBMXShelby37 min
Apr 1, 2:33 AM CDTSpecial Weather StatementBMXLowndes27 min
Apr 1, 2:36 AM CDTFlash Flood WarningBMXAutauga, Dallas, Elmore, Lowndes, Montgomery3 hr
Apr 1, 3:06 AM CDTSpecial Weather StatementBMXJefferson39 min
Apr 1, 3:29 AM CDTSpecial Weather StatementBMXLee, Macon, Tallapoosa46 min
Apr 1, 4:38 AM CDTAreal Flood AdvisoryBMXLee3 hr
Apr 1, 5:16 AM CDTRiver Flood WarningBMXSumter45 hr
Apr 1, 6:07 AM CDTSpecial Weather StatementBMXBarbour38 min
Apr 1, 6:22 AM CDTSpecial Weather StatementBMXBarbour38 min
Apr 1, 10:23 AM CDTSpecial Weather StatementBMXMontgomery52 min
Apr 1, 10:24 AM CDTSpecial Weather StatementBMXLowndes51 min
Apr 1, 10:52 AM CDTAreal Flood AdvisoryBMXAutauga, Barbour, Bullock, Dallas, Elmore, Lee and 7 more113 min
Apr 1, 10:57 AM CDTSpecial Weather StatementBMXAutauga48 min
Apr 1, 11:03 AM CDTSpecial Weather StatementBMXMacon27 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2016Every severe thunderstorm warning in 2016

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.