Alert archive / Alabama / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 97, NWS Birmingham, AL

April 5, 2017Calhoun County, Cleburne County, Talladega County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Apr 5, 2017, 3:48 PM CDT for Calhoun County, Cleburne County, Talladega County, Alabama. It was in force for 67 min. 16 reports 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
Apr 5, 2017, 3:48 PM CDT (20:48 UTC)
Expired
Apr 5, 2017, 4:55 PM CDT
In force
67 min
Issued by
NWS Birmingham, AL
Area
Storm-based polygon
Tornado
Possible
Hail
2.0 in
Wind
60.0 mph

Counties Calhoun County, AL, Cleburne County, AL, Talladega County, AL

The radar

The Birmingham radar (KBMX), 104 km from the middle of the area, began a volume at 20:50 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
Apr 5, 3:53 PM CDTHAIL 0.88Oxford, AL
Apr 5, 3:54 PM CDTHAIL 2Munford, AL
Apr 5, 3:54 PM CDTHAIL 2.751 E Munford, ALA FEW REPORTS OF BASEBALL-SIZED HAIL IN THE MUNFORD AREA.
Apr 5, 3:54 PM CDTHAIL 2.75Grant Town, ALSEVERAL MORE REPORTS OF BASEBALL-SIZED HAIL REPORTED IN THE MUNFORD AREA.
Apr 5, 3:54 PM CDTHAIL 3Jenifer, ALHAIL STONE MEASURED AT 3 IN DIAMETER.
Apr 5, 3:55 PM CDTHAIL 41 Wsw Munford, ALHAIL WAS MEASURED AT 3.75 INCHES IN DIAMETER.
Apr 5, 3:55 PM CDTHAIL 41 Wsw Munford, ALHAIL WAS MEASURED AT 3.75 INCHES IN DIAMETER. SEVERAL VEHICLES HAD WINDOWS BROKEN OUT AND SOME STRUCTURE DAMAGE.
Apr 5, 4:05 PM CDTHAIL 1.25Oxford, AL
Apr 5, 4:10 PM CDTHAIL 1.75Oxford, AL
Apr 5, 4:20 PM CDTTSTM WND DMG1 Sse Bynum, ALTREES BLOWN DOWN ON COUNTY LINE ROAD.
Apr 5, 4:23 PM CDTHAIL 22 Ene Chalafinnee, ALGOLFBALL- TO TENNIS BALL-SIZED HAIL. TIME CORRECTED (ESTIMATED).
Apr 5, 4:23 PM CDTHAIL 23 Ssw Heflin, AL
Apr 5, 4:28 PM CDTHAIL 1.751 Ne Heflin, AL
Apr 5, 4:39 PM CDTHAIL 2.52 Ene Chalafinnee, ALGOLFBALL- TO TENNIS BALL-SIZED HAIL.
Apr 5, 4:40 PM CDTTSTM WND DMG3 Sse Trickem, ALTREE DOWNED.
Apr 5, 4:40 PM CDTTORNADO3 Sse Trickem, ALMINOR TREE DAMAGE, DAMAGE TO A CHICKEN HOUSE ROOF. TORNADO CAUGHT ON VIDEO.

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
Apr 5, 1:50 PM CDTTornado WatchSPC8 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 8.8 hours before the alert went out and 105 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 12:00Z on 2017-04-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 560 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 12:00Z on 2017-04-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 408 square meters per square second.19395878Sfc1 km3 km6 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
560 J/kg
Mixed-layer CIN
-102 J/kg
Mixed-layer LCL
617 m above ground
0-6 km bulk shear
68 kt
0-1 km storm-relative helicity
408 m²/s²
0-3 km storm-relative helicity
396 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.6

Open this sounding in Storm Lab

The text

As transmitted.

448 
WUUS54 KBMX 052048
SVRBMX
ALC015-029-121-052215-
/O.NEW.KBMX.SV.W.0097.170405T2048Z-170405T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
Severe Thunderstorm Warning
National Weather Service Birmingham AL
348 PM CDT WED APR 5 2017

The National Weather Service in Birmingham has issued a

* Severe Thunderstorm Warning for...
  Northeastern Talladega County in east central Alabama...
  Southern Calhoun County in east central Alabama...
  Cleburne County in east central Alabama...

* Until 515 PM CDT

* At 348 PM CDT, a severe thunderstorm was located over Talladega
  Municipal Airport, or 8 miles northeast of Talladega, moving east
  at 35 mph.

  HAZARD...Two inch hail and 60 mph wind gusts. 

  SOURCE...Radar indicated. 

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           wind damage to roofs, siding, and trees. 

* Locations impacted include...
  Anniston, Oxford, Talladega, Jacksonville, Heflin, Cobb Town, West
  End-Cobb Town, Fort McClellan, Saks, Lincoln, Weaver, Munford,
  Hobson City, Ranburne, Fruithurst, Waldo, Edwardsville, Talladega
  Superspeedway, Anniston Regional Airport and Blue Mountain.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

This is a dangerous storm. Prepare immediately for large destructive
hail capable of producing significant damage. People outside should
move to shelter inside a strong building,  and stay away from
windows.

&&

A tornado watch remains in effect until 900 PM CDT for east central
Alabama.

LAT...LON 3350 8535 3349 8536 3350 8576 3347 8578
      3347 8589 3350 8585 3350 8590 3346 8590
      3345 8592 3341 8592 3339 8610 3370 8613
      3394 8540 3348 8531
TIME...MOT...LOC 2048Z 252DEG 31KT 3354 8602 

TORNADO...POSSIBLE
HAIL...2.00IN
WIND...60MPH
 
$$

17/KLAWS
1 follow-up statement
924 
WWUS54 KBMX 052155 RRA
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
455 PM CDT WED APR 5 2017

ALC015-029-121-052205-
/O.CAN.KBMX.SV.W.0097.000000T0000Z-170405T2215Z/
Talladega AL-Calhoun AL-Cleburne AL-
455 PM CDT WED APR 5 2017

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN TALLADEGA...
SOUTHERN CALHOUN AND CLEBURNE COUNTIES IS CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning has been cancelled.

A tornado watch remains in effect until 900 PM CDT for east central
Alabama.

LAT...LON 3350 8535 3349 8536 3350 8576 3347 8578
      3347 8589 3350 8585 3350 8590 3346 8590
      3345 8592 3341 8592 3339 8610 3370 8613
      3394 8540 3348 8531
TIME...MOT...LOC 2153Z 252DEG 31KT 3372 8536 

$$

17/KLAWS

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 5, 1:24 AM CDTSevere Thunderstorm WarningBMXBarbour66 min
Apr 5, 2:04 AM CDTSevere Thunderstorm WarningBMXBarbour, Pike56 min
Apr 5, 2:44 AM CDTSevere Thunderstorm WarningBMXRussell32 min
Apr 5, 3:32 AM CDTSevere Thunderstorm WarningBMXRussell43 min
Apr 5, 3:35 AM CDTSevere Thunderstorm WarningBMXHale, Perry40 min
Apr 5, 3:54 AM CDTSevere Thunderstorm WarningBMXBibb, Tuscaloosa34 min
Apr 5, 3:57 AM CDTSevere Thunderstorm WarningBMXAutauga, Lowndes, Montgomery33 min
Apr 5, 4:11 AM CDTSevere Thunderstorm WarningBMXBibb, Perry49 min
Apr 5, 4:45 AM CDTSevere Thunderstorm WarningBMXChilton, Shelby44 min
Apr 5, 5:22 AM CDTSevere Thunderstorm WarningBMXCalhoun, Clay, Cleburne, Talladega38 min
Apr 5, 5:24 AM CDTSevere Thunderstorm WarningBMXChambers, Tallapoosa51 min
Apr 5, 6:02 AM CDTSevere Thunderstorm WarningBMXClay, Randolph58 min
Apr 5, 6:04 AM CDTSevere Thunderstorm WarningBMXBibb, Hale, Perry56 min
Apr 5, 6:52 AM CDTSevere Thunderstorm WarningBMXShelby83 min
Apr 5, 7:22 AM CDTAreal Flood AdvisoryBMXGreene, Pickens, Sumter, Tuscaloosa3 hr
Apr 5, 7:40 AM CDTAreal Flood AdvisoryBMXBlount, Jefferson3 hr
Apr 5, 8:43 AM CDTAreal Flood AdvisoryBMXCalhoun, St. Clair, Shelby, Talladega3 hr
Apr 5, 9:00 AM CDTSevere Thunderstorm WarningBMXDallas, Lowndes75 min
Apr 5, 9:13 AM CDTSpecial Weather StatementBMXCleburne32 min
Apr 5, 9:35 AM CDTSevere Thunderstorm WarningBMXBarbour, Pike70 min
Apr 5, 10:16 AM CDTSevere Thunderstorm WarningBMXMontgomery29 min
Apr 5, 10:29 AM CDTAreal Flood AdvisoryBMXCalhoun, Clay, Cleburne, Randolph3 hr
Apr 5, 10:38 AM CDTSevere Thunderstorm WarningBMXElmore, Macon, Tallapoosa67 min
Apr 5, 10:56 AM CDTSevere Thunderstorm WarningBMXBarbour49 min
Apr 5, 11:43 AM CDTSevere Thunderstorm WarningBMXBibb, Tuscaloosa32 min
Apr 5, 11:55 AM CDTSevere Thunderstorm WarningBMXShelby66 min
Apr 5, 12:53 PM CDTSpecial Weather StatementBMXTalladega82 min
Apr 5, 1:42 PM CDTSpecial Weather StatementBMXCleburne33 min
Apr 5, 2:35 PM CDTSpecial Weather StatementBMXCleburne25 min
Apr 5, 3:03 PM CDTSpecial Weather StatementBMXTalladega42 min
Apr 5, 3:22 PM CDTSevere Thunderstorm WarningBMXSt. Clair, Talladega38 min
Apr 5, 4:08 PM CDTTornado WarningBMXCleburne52 min
Apr 5, 4:10 PM CDTSevere Thunderstorm WarningBMXCalhoun, Cherokee, Etowah45 min
Apr 5, 4:37 PM CDTWind AdvisoryBMXAutauga, Barbour, Bibb, Blount, Bullock, Calhoun and 33 more26 hr
Apr 5, 4:59 PM CDTSpecial Weather StatementBMXRandolph46 min
Apr 5, 5:30 PM CDTSevere Thunderstorm WarningBMXJefferson, Shelby45 min
Apr 5, 5:32 PM CDTSpecial Weather StatementBMXRandolph13 min
Apr 5, 5:33 PM CDTSpecial Weather StatementBMXRandolph, Tallapoosa57 min
Apr 5, 5:55 PM CDTSevere Thunderstorm WarningBMXChilton, Shelby35 min
Apr 5, 5:56 PM CDTSevere Thunderstorm WarningBMXSt. Clair40 min
Apr 5, 6:03 PM CDTSevere Thunderstorm WarningBMXRandolph27 min
Apr 5, 6:17 PM CDTSevere Thunderstorm WarningBMXCalhoun, St. Clair, Talladega43 min
Apr 5, 6:20 PM CDTSpecial Weather StatementBMXDeKalb25 min
Apr 5, 6:32 PM CDTSevere Thunderstorm WarningBMXSt. Clair, Shelby, Talladega27 min
Apr 5, 6:35 PM CDTSevere Thunderstorm WarningBMXEtowah25 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2017Every severe thunderstorm warning in 2017

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.