Alert archive / Alabama / Special Weather Statements in 2017

Special Weather Statement, NWS Birmingham, AL

April 3, 2017Bibb County, Alabama

NWS Birmingham, AL issued this special weather statement at Apr 3, 2017, 12:41 AM CDT for Bibb County, Alabama. It was in force for 34 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: Apr 3, 2017, 12:41 AM CDT (05:41 UTC)
Expired: Apr 3, 2017, 1:15 AM CDT
In force: 34 min
Issued by: NWS Birmingham, AL

County Bibb County, AL

The radar

The Birmingham radar (KBMX), 33 km from the middle of the area, began a volume at 05:42 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 00:00Z, 5.7 hours before the alert went out and 31 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2582 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 111 m²/s²
0-3 km storm-relative helicity: 222 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Birmingham, AL wrote its last area forecast discussion before this special weather statement went out at Apr 2, 11:52 PM CDT, 49 minutes earlier.

Area forecast discussion, Apr 2, 11:52 PM CDT, 49 minutes before

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Hazardous weather outlook, Apr 3, 12:36 AM CDT, 5 minutes before

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In the hours before

Special weather statement, Apr 3, 12:41 AM CDT, 0 minutes before

Special Weather Statement
National Weather Service Birmingham AL
1241 AM CDT MON APR 3 2017

ALZ023-034-030615-
Bibb AL-Tuscaloosa AL-
1241 AM CDT MON APR 3 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN TUSCALOOSA AND
CENTRAL BIBB COUNTIES UNTIL 115 AM CDT...

At 1241 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near University Mall to near Low Gap. Movement
was east at 35 mph.

Pea size hail and wind gusts up to 50 mph will be possible with these
storms.

Locations impacted include...
Tuscaloosa, Northport, Holt, Lake View, Brookwood, Coaling, Vance,
Woodstock, West Blocton, Tannehill Ironworks State Park, Abernant,
McFarland Mall, Bryant Denny Stadium, Lake Wildwood, University Mall,
Brierfield Ironworks Park, Deerlick Creek Campgrounds, Low Gap,
Mercedes Benz Of Alabama and Eoline.

LAT...LON 3340 8723 3337 8723 3334 8718 3332 8718
      3332 8716 3331 8716 3331 8713 3329 8712
      3328 8707 3325 8706 3325 8703 3317 8703
      3316 8697 3310 8697 3310 8695 3306 8693
      3305 8688 3303 8688 3297 8740 3325 8759
TIME...MOT...LOC 0541Z 251DEG 28KT 3321 8747 3299 8734

87/GRANTHAM

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 3, 1:21 AM CDT	Special Weather Statement	BMX	Jefferson	39 min
Apr 3, 3:39 AM CDT	Severe Thunderstorm Warning	BMX	Sumter	51 min
Apr 3, 4:10 AM CDT	Severe Thunderstorm Warning	BMX	Greene, Hale, Marengo	65 min
Apr 3, 5:09 AM CDT	Special Weather Statement	BMX	Dallas, Perry	66 min
Apr 3, 6:04 AM CDT	Special Weather Statement	BMX	Autauga, Bibb, Chilton, Lowndes	56 min
Apr 3, 6:46 AM CDT	Special Weather Statement	BMX	Autauga, Chilton, Lowndes, Shelby	29 min
Apr 3, 7:58 AM CDT	Special Weather Statement	BMX	Clay, Coosa, Elmore, Montgomery, Talladega, Tallapoosa	77 min
Apr 3, 8:06 AM CDT	River Flood Warning	BMX	Sumter	53 hr
Apr 3, 8:58 AM CDT	Severe Thunderstorm Warning	BMX	Montgomery, Pike	47 min
Apr 3, 9:06 AM CDT	Special Weather Statement	BMX	Chambers, Lee, Macon, Randolph	54 min
Apr 3, 9:07 AM CDT	Special Weather Statement	BMX	Chambers, Randolph	53 min
Apr 3, 9:40 AM CDT	Severe Thunderstorm Warning	BMX	Barbour, Bullock	80 min
Apr 3, 9:58 AM CDT	Special Weather Statement	BMX	Russell	62 min
Apr 3, 3:12 PM CDT	River Flood Warning	BMX	Greene, Hale, Marengo, Pickens, Sumter	50 hr
Apr 3, 3:28 PM CDT	River Flood Warning	BMX	Greene, Hale, Marengo	5 days
Apr 3, 3:35 PM CDT	River Flood Warning	BMX	Greene, Hale, Marengo, Sumter	5 days

Nearby

Special Weather Statements in Alabama, 2017 Every special weather statement 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.