Alert archive / Alabama / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 22, NWS Birmingham, AL

February 7, 2017Bullock County, Macon County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Feb 7, 2017, 1:46 PM CST for Bullock County, Macon County, Alabama. It was in force for 44 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, 2017, 1:46 PM CST (19:46 UTC)
Expired
Feb 7, 2017, 2:30 PM CST
In force
44 min
Issued by
NWS Birmingham, AL
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Bullock County, AL, Macon County, AL

The radar

The Maxwell AFB radar (KMXX), 18 km from the middle of the area, began a volume at 19:35 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

Birmingham, AL (KBMX), launched 12:00Z, 7.8 hours before the alert went out and 124 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 2017-02-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Birmingham, AL at 12:00Z on 2017-02-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 157 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
880 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
157 m²/s²
0-3 km storm-relative helicity
224 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

347 
WUUS54 KBMX 071946
SVRBMX
ALC011-087-072030-
/O.NEW.KBMX.SV.W.0022.170207T1946Z-170207T2030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Birmingham AL
146 PM CST TUE FEB 7 2017

The National Weather Service in Birmingham has issued a

* Severe Thunderstorm Warning for...
  Macon County in southeastern Alabama...
  Northern Bullock County in southeastern Alabama...

* Until 230 PM CST

* At 146 PM CST, severe thunderstorms were located along a line
  extending from Tysonville to near Shopton, moving northeast at 45
  mph.

  HAZARD...60 mph wind gusts. 

  SOURCE...Radar indicated. 

  IMPACT...Expect damage to roofs, siding, and trees. 

* Locations impacted include...
  Tuskegee, Union Springs, Notasulga, Milstead, Shorter, Franklin,
  Lake Tuskegee, Davisville, Society Hill, Tuskegee National Forest,
  Hardaway, Liverpool, Shopton, Franklin Field, Guerryton,
  Victoryland, Tysonville, Liberty City, Creek Stand and Moton Field
  Municipal Airport.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3206 8599 3225 8600 3225 8599 3227 8598
      3228 8592 3233 8597 3234 8599 3242 8602
      3243 8599 3244 8599 3245 8589 3248 8585
      3249 8588 3249 8580 3258 8580 3258 8572
      3260 8571 3250 8549 3250 8544 3216 8543
TIME...MOT...LOC 1946Z 242DEG 38KT 3242 8602 3215 8595 

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

32/Davis
2 follow-up statements
657 
WWUS54 KBMX 072000
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
200 PM CST TUE FEB 7 2017

ALC011-087-072030-
/O.CON.KBMX.SV.W.0022.000000T0000Z-170207T2030Z/
Macon AL-Bullock AL-
200 PM CST TUE FEB 7 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 PM CST
FOR MACON AND NORTHERN BULLOCK COUNTIES...

At 200 PM CST, severe thunderstorms were located along a line
extending from Reeves Airport to near Franklin Field, moving
northeast at 45 mph.

HAZARD...60 mph wind gusts. 

SOURCE...Radar indicated. 

IMPACT...Expect damage to roofs, siding, and trees. 

Locations impacted include...
Tuskegee, Union Springs, Notasulga, Milstead, Shorter, Franklin, Lake
Tuskegee, Davisville, Society Hill, Tuskegee National Forest,
Hardaway, Liverpool, Franklin Field, Guerryton, Victoryland,
Tysonville, Liberty City, Creek Stand, Moton Field Municipal Airport
and Simsville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3207 8591 3225 8589 3230 8593 3233 8597
      3234 8599 3242 8602 3243 8599 3244 8599
      3245 8589 3248 8585 3249 8588 3249 8580
      3258 8580 3258 8572 3260 8571 3250 8549
      3250 8544 3216 8543
TIME...MOT...LOC 2000Z 242DEG 38KT 3249 8587 3222 8580 

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

32/Davis
121 
WWUS54 KBMX 072012
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
212 PM CST TUE FEB 7 2017

ALC011-087-072030-
/O.CON.KBMX.SV.W.0022.000000T0000Z-170207T2030Z/
Macon AL-Bullock AL-
212 PM CST TUE FEB 7 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 PM CST
FOR MACON AND NORTHEASTERN BULLOCK COUNTIES...

At 212 PM CST, severe thunderstorms were located along a line
extending from near Liberty City to near Davisville, moving northeast
at 45 mph.

HAZARD...60 mph wind gusts. 

SOURCE...Radar indicated. 

IMPACT...Expect damage to roofs, siding, and trees. 

Locations impacted include...
Tuskegee, Union Springs, Notasulga, Franklin, Guerryton, Lake
Tuskegee, Davisville, Society Hill, Tuskegee National Forest, Liberty
City, Creek Stand, Warriorstand, Moton Field Municipal Airport,
Uphapee Creek, Sedgefield, Fort Davis and I 85 Rest Area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3211 8571 3227 8571 3237 8573 3242 8589
      3245 8589 3248 8585 3249 8588 3249 8580
      3258 8580 3258 8572 3260 8571 3250 8549
      3250 8544 3216 8543
TIME...MOT...LOC 2012Z 242DEG 38KT 3255 8575 3228 8568 

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

32/Davis

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 6, 9:51 PM CSTDense Fog AdvisoryBMXBlount, Calhoun, Cherokee, Clay, Cleburne, Etowah and 7 more8 hr
Feb 7, 9:23 AM CSTSpecial Weather StatementBMXTuscaloosa37 min
Feb 7, 1:29 PM CSTTornado WarningBMXMontgomery31 min
Feb 7, 1:56 PM CSTSevere Thunderstorm WarningBMXBarbour, Bullock, Pike49 min
Feb 7, 2:11 PM CSTSpecial Weather StatementBMXTuscaloosa49 min
Feb 7, 2:24 PM CSTSevere Thunderstorm WarningBMXLee, Macon, Russell66 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.