Alert archive / Alabama / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 35, NWS Birmingham, AL

April 29, 2016Jefferson County, Walker County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Apr 29, 2016, 5:42 PM CDT for Jefferson County, Walker County, Alabama. It was in force for 63 min. 10 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 29, 2016, 5:42 PM CDT (22:42 UTC)
Expired: Apr 29, 2016, 6:45 PM CDT
In force: 63 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Jefferson County, AL, Walker County, AL

The radar

The Birmingham radar (KBMX), 51 km from the middle of the area, began a volume at 22:43 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

Time	Report	Where	Remark
Apr 29, 5:59 PM CDT	TSTM WND DMG	6 S Dora, AL	TREE DOWN ON FLAT TOP ROAD IN WEST JEFFERSON. LOCATION APPROXIMATE.
Apr 29, 5:59 PM CDT	TSTM WND DMG	Concord, AL	TREES DOWN.
Apr 29, 6:00 PM CDT	TSTM WND DMG	5 Nw Sylvan Springs, AL	TREE DOWN AT INTERSECTION OF SHORT CREEK ROAD AND ALLIANCE SHORT CREEK ROAD.
Apr 29, 6:00 PM CDT	TSTM WND GST 53	2 Nw Birmingham, AL	53 MPH WIND GUST MEASURED IN NORTH BIRMINGHAM. LOCATION APPROXIMATE.
Apr 29, 6:10 PM CDT	HAIL 1	2 S Forestdale, AL	HAIL CURRENTLY FALLING, MOSTLY NICKEL-SIZED, A FEW QUARTERS AT THE SANDUSKY COMMUNITY CENTER.
Apr 29, 6:14 PM CDT	TSTM WND DMG	2 Wsw Fultondale, AL	POWER LINES DOWN AT INTERSECTION OF KATHY LANE AND WALKER CHAPEL ROAD.
Apr 29, 6:21 PM CDT	TSTM WND GST 52	Gardendale, AL	52 MPH WIND GUST AND PEA SIZED HAIL REPORTED IN GARDENDALE.
Apr 29, 6:21 PM CDT	HAIL 1	Kimberly, AL	QUARTER-SIZED HAIL IN KIMBERLY.
Apr 29, 6:23 PM CDT	TSTM WND DMG	Liberty Park, AL	A FEW TREES WERE REPORTED DOWN IN LIBERTY PARK. TIME ESTIMATED BY RADAR.
Apr 29, 6:25 PM CDT	HAIL 0.75	2 E Irondale, AL	DIME-SIZED HAIL AT THE TIME OF THE REPORT ALONG GRANTS MILL ROAD AND I-459.

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

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 10.7 hours before the alert went out and 50 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: 481 J/kg
Mixed-layer CIN: -167 J/kg
Mixed-layer LCL: 1110 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: -23 m²/s²
0-3 km storm-relative helicity: 72 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

069 
WUUS54 KBMX 292242
SVRBMX
ALC073-127-292345-
/O.NEW.KBMX.SV.W.0035.160429T2242Z-160429T2345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
542 PM CDT FRI APR 29 2016

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN WALKER COUNTY IN CENTRAL ALABAMA...
  JEFFERSON COUNTY IN CENTRAL ALABAMA...

* UNTIL 645 PM CDT

* AT 542 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM NEAR SMITH DAM TO NEAR DEERLICK CREEK CAMPGROUNDS...
  MOVING EAST AT 35 MPH.

  HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE 
           TO ROOFS...SIDING...AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  BIRMINGHAM...HOOVER...VESTAVIA HILLS...BESSEMER...HOMEWOOD...MOUNTAIN
  BROOK...TRUSSVILLE...HUEYTOWN...GARDENDALE...IRONDALE...LEEDS...
  FAIRFIELD...FULTONDALE...SUMITON...CORDOVA...DORA...CENTER POINT...
  PLEASANT GROVE...CLAY AND PINSON.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 INTERSTATE 65 BETWEEN MILE MARKERS 250 AND 282.
 INTERSTATE 459 BETWEEN MILE MARKERS 6 AND 33.
 INTERSTATE 59 BETWEEN MILE MARKERS 130 AND 143.
 INTERSTATE 20 BETWEEN MILE MARKERS 104 AND 140.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3389 8701 3382 8695 3384 8676 3377 8665
      3377 8654 3372 8653 3347 8660 3347 8667
      3325 8698 3325 8706 3328 8707 3331 8716
      3342 8725 3346 8734 3349 8733 3350 8726
      3352 8732 3359 8732 3360 8742 3390 8710
TIME...MOT...LOC 2242Z 278DEG 32KT 3390 8710 3333 8738 

HAIL...1.00IN
WIND...60MPH
 
$$

32/DAVIS

2 follow-up statements

181 
WWUS54 KBMX 292302
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
602 PM CDT FRI APR 29 2016

ALC127-292312-
/O.CAN.KBMX.SV.W.0035.000000T0000Z-160429T2345Z/
WALKER AL-
602 PM CDT FRI APR 29 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WALKER COUNTY IS
CANCELLED...

THE STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE WARNED
AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 3377 8665 3376 8654 3347 8660 3347 8667
      3325 8698 3325 8706 3328 8707 3331 8716
      3342 8725 3346 8734 3349 8733 3350 8726
      3353 8727 3352 8725 3355 8719 3360 8719
      3366 8706 3377 8702 3382 8695 3384 8676
TIME...MOT...LOC 2302Z 278DEG 32KT 3388 8691 3331 8719 

$$

ALC073-292345-
/O.CON.KBMX.SV.W.0035.000000T0000Z-160429T2345Z/
JEFFERSON AL-
602 PM CDT FRI APR 29 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT
FOR JEFFERSON COUNTY...

AT 602 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM ARKADELPHIA TO ABERNANT...MOVING EAST AT 35 MPH.

HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

SOURCE...TRAINED WEATHER SPOTTERS. 

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO 
         ROOFS...SIDING...AND TREES. 

LOCATIONS IMPACTED INCLUDE...
BIRMINGHAM...HOOVER...VESTAVIA HILLS...BESSEMER...HOMEWOOD...MOUNTAIN
BROOK...TRUSSVILLE...HUEYTOWN...GARDENDALE...IRONDALE...LEEDS...FAIRFIELD...
FULTONDALE...SUMITON...CENTER POINT...PLEASANT GROVE...CLAY...PINSON...
TARRANT AND MIDFIELD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3377 8665 3376 8654 3347 8660 3347 8667
      3325 8698 3325 8706 3328 8707 3331 8716
      3342 8725 3346 8734 3349 8733 3350 8726
      3353 8727 3352 8725 3355 8719 3360 8719
      3366 8706 3377 8702 3382 8695 3384 8676
TIME...MOT...LOC 2302Z 278DEG 32KT 3388 8691 3331 8719 

HAIL...1.00IN
WIND...60MPH
 
$$

32/DAVIS

578 
WWUS54 KBMX 292323
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
623 PM CDT FRI APR 29 2016

ALC073-292345-
/O.CON.KBMX.SV.W.0035.000000T0000Z-160429T2345Z/
JEFFERSON AL-
623 PM CDT FRI APR 29 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT
FOR JEFFERSON COUNTY...

AT 623 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM NEAR PINSON TO NEAR TANNEHILL IRONWORKS STATE PARK...
MOVING EAST AT 40 MPH.

HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

SOURCE...TRAINED WEATHER SPOTTERS. 

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO 
         ROOFS...SIDING...AND TREES. 

LOCATIONS IMPACTED INCLUDE...
BIRMINGHAM...HOOVER...VESTAVIA HILLS...BESSEMER...HOMEWOOD...MOUNTAIN
BROOK...TRUSSVILLE...HUEYTOWN...GARDENDALE...IRONDALE...LEEDS...FAIRFIELD...
FULTONDALE...CENTER POINT...PLEASANT GROVE...CLAY...PINSON...TARRANT...
MIDFIELD AND ADAMSVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3377 8665 3376 8654 3347 8660 3347 8667
      3325 8698 3325 8706 3328 8707 3331 8716
      3342 8725 3345 8730 3349 8721 3358 8697
      3376 8685 3384 8676 3384 8675
TIME...MOT...LOC 2323Z 285DEG 35KT 3373 8669 3329 8702 

HAIL...1.00IN
WIND...60MPH
 
$$

32/DAVIS

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 29, 6:04 AM CDT	Dense Fog Advisory	BMX	Autauga, Barbour, Bullock, Chambers, Dallas, Elmore and 7 more	3 hr
Apr 29, 3:45 PM CDT	Severe Thunderstorm Warning	BMX	Lamar	45 min
Apr 29, 4:23 PM CDT	Special Weather Statement	BMX	Fayette	67 min
Apr 29, 4:27 PM CDT	Special Weather Statement	BMX	Walker, Winston	63 min
Apr 29, 4:42 PM CDT	Special Weather Statement	BMX	Pickens	63 min
Apr 29, 5:02 PM CDT	Special Weather Statement	BMX	Tuscaloosa	43 min
Apr 29, 5:12 PM CDT	Severe Thunderstorm Warning	BMX	Fayette, Tuscaloosa	48 min
Apr 29, 5:27 PM CDT	Special Weather Statement	BMX	Walker	48 min
Apr 29, 5:46 PM CDT	Special Weather Statement	BMX	Blount	59 min
Apr 29, 5:48 PM CDT	Severe Thunderstorm Warning	BMX	Pickens	29 min
Apr 29, 5:54 PM CDT	Severe Thunderstorm Warning	BMX	Tuscaloosa	51 min
Apr 29, 6:14 PM CDT	Severe Thunderstorm Warning	BMX	St. Clair, Shelby	46 min
Apr 29, 6:27 PM CDT	Special Weather Statement	BMX	Bibb	48 min
Apr 29, 6:29 PM CDT	Special Weather Statement	BMX	Pickens	46 min
Apr 29, 6:47 PM CDT	Special Weather Statement	BMX	Chilton, Coosa, Talladega	58 min
Apr 29, 6:50 PM CDT	Special Weather Statement	BMX	Hale	40 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2016 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.