Alert archive / Alabama / Wind Advisories in 2017

Wind Advisory 4, NWS Birmingham, AL

April 29, 201739 counties in Alabama

NWS Birmingham, AL issued this wind advisory at Apr 29, 2017, 3:06 AM CDT for 39 counties in Alabama. It took effect at Apr 29, 2017, 9:00 AM CDT. It was in force for 10 hr.

The area

The counties it named.

The facts

Issued
Apr 29, 2017, 3:06 AM CDT (08:06 UTC)
In effect from
Apr 29, 2017, 9:00 AM CDT
Expired
Apr 29, 2017, 7:00 PM CDT
In force
10 hr
Issued by
NWS Birmingham, AL
All 39 counties

Autauga County, AL, Barbour County, AL, Bibb County, AL, Blount County, AL, Bullock County, AL, Calhoun County, AL, Chambers County, AL, Cherokee County, AL, Chilton County, AL, Clay County, AL, Cleburne County, AL, Coosa County, AL, Dallas County, AL, Elmore County, AL, Etowah County, AL, Fayette County, AL, Greene County, AL, Hale County, AL, Jefferson County, AL, Lamar County, AL, Lee County, AL, Lowndes County, AL, Macon County, AL, Marengo County, AL, Marion County, AL, Montgomery County, AL, Perry County, AL, Pickens County, AL, Pike County, AL, Randolph County, AL, Russell County, AL, Shelby County, AL, St. Clair County, AL, Sumter County, AL, Talladega County, AL, Tallapoosa County, AL, Tuscaloosa County, AL, Walker County, AL, Winston County, AL

The radar

The Birmingham radar (KBMX), 22 km from the middle of the area, began a volume at 08:09 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, 8.1 hours before the alert went out and 23 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 2017-04-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1203 joules per kilogram.LCLLFCEL10008507005003002001001 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 00:00Z on 2017-04-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 68 square meters per square second.193958Sfc1 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
1203 J/kg
Mixed-layer CIN
-195 J/kg
Mixed-layer LCL
1645 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
68 m²/s²
0-3 km storm-relative helicity
202 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.2

Open this sounding in Storm Lab

The text

As transmitted.

278 
WWUS74 KBMX 290806
NPWBMX

URGENT - WEATHER MESSAGE
National Weather Service Birmingham AL
306 AM CDT Sat Apr 29 2017

...Strong Winds At Times Across Central Alabama...

ALZ011>015-017>050-291800-
/O.NEW.KBMX.WI.Y.0004.170429T1400Z-170430T0000Z/
Marion-Lamar-Fayette-Winston-Walker-Blount-Etowah-Calhoun-
Cherokee-Cleburne-Pickens-Tuscaloosa-Jefferson-Shelby-St. Clair-
Talladega-Clay-Randolph-Sumter-Greene-Hale-Perry-Bibb-Chilton-
Coosa-Tallapoosa-Chambers-Marengo-Dallas-Autauga-Lowndes-Elmore-
Montgomery-Macon-Bullock-Lee-Russell-Pike-Barbour-
Including the cities of Hamilton, Sulligent, Vernon, Fayette, 
Double Springs, Jasper, Oneonta, Gadsden, Anniston, Centre, 
Heflin, Carrollton, Tuscaloosa, Birmingham, Hoover, Columbiana, 
Pelham, Alabaster, Pell City, Moody, Talladega, Sylacauga, 
Ashland, Roanoke, Livingston, Eutaw, Greensboro, Moundville, 
Marion, Centreville, Clanton, Rockford, Alexander City, 
Dadeville, Valley, Lanett, Lafayette, Demopolis, Linden, Selma, 
Prattville, Fort Deposit, Hayneville, Wetumpka, Tallassee, 
Montgomery, Tuskegee, Union Springs, Auburn, Opelika, 
Phenix City, Troy, and Eufaula
306 AM CDT Sat Apr 29 2017

...WIND ADVISORY IN EFFECT FROM 9 AM THIS MORNING TO 7 PM CDT
THIS EVENING...

The National Weather Service in Birmingham has issued a Wind
Advisory, which is in effect from 9 AM this morning to 7 PM CDT
this evening. 

* TIMING...of the strongest winds will be through 7 PM this
  evening.

* WINDS...will be sustained at 20 to 30 mph with higher gusts from
  a southerly direction.
 
* IMPACTS...of the strong winds could result in large limbs and
  weak trees to be blown down. Travel may also be dangerous at
  times especially if traveling on an east to west oriented road.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory means that winds of 25 mph or higher are 
expected. Winds this strong can make driving difficult...especially
for high profile vehicles. Use extra caution.

&&

$$
3 follow-up statements
990 
WWUS74 KBMX 291614
NPWBMX

URGENT - WEATHER MESSAGE
National Weather Service Birmingham AL
1114 AM CDT Sat Apr 29 2017

...Strong winds will be possible at times across Central 
Alabama...

ALZ011>015-017>050-300000-
/O.CON.KBMX.WI.Y.0004.000000T0000Z-170430T0000Z/
Marion-Lamar-Fayette-Winston-Walker-Blount-Etowah-Calhoun-
Cherokee-Cleburne-Pickens-Tuscaloosa-Jefferson-Shelby-St. Clair-
Talladega-Clay-Randolph-Sumter-Greene-Hale-Perry-Bibb-Chilton-
Coosa-Tallapoosa-Chambers-Marengo-Dallas-Autauga-Lowndes-Elmore-
Montgomery-Macon-Bullock-Lee-Russell-Pike-Barbour-
Including the cities of Hamilton, Sulligent, Vernon, Fayette, 
Double Springs, Jasper, Oneonta, Gadsden, Anniston, Centre, 
Heflin, Carrollton, Tuscaloosa, Birmingham, Hoover, Columbiana, 
Pelham, Alabaster, Pell City, Moody, Talladega, Sylacauga, 
Ashland, Roanoke, Livingston, Eutaw, Greensboro, Moundville, 
Marion, Centreville, Clanton, Rockford, Alexander City, 
Dadeville, Valley, Lanett, Lafayette, Demopolis, Linden, Selma, 
Prattville, Fort Deposit, Hayneville, Wetumpka, Tallassee, 
Montgomery, Tuskegee, Union Springs, Auburn, Opelika, 
Phenix City, Troy, and Eufaula
1114 AM CDT Sat Apr 29 2017

...WIND ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING...

* TIMING...of the strongest winds will be through 7 PM this 
  evening. 

* WINDS...will be sustained at 20 to 30 mph, with higher gusts 
  from a southeast to south direction. 

* IMPACTS...of the strong winds could result in large limbs and 
  weak trees to be blown down. Travel may also be dangerous at 
  times especially if traveling on an east to west oriented 
  road. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory means that winds of 25 mph or higher are
expected. Winds this strong can make driving difficult...
especially for high profile vehicles. Use extra caution.

&&

$$

08
873 
WWUS74 KBMX 292133
NPWBMX

URGENT - WEATHER MESSAGE
National Weather Service Birmingham AL
433 PM CDT Sat Apr 29 2017

...Strong winds will be possible at times across Central
Alabama...

ALZ011>015-017>050-300600-
/O.NEW.KBMX.WI.Y.0005.170430T1500Z-170501T0300Z/
/O.CON.KBMX.WI.Y.0004.000000T0000Z-170430T0000Z/
Marion-Lamar-Fayette-Winston-Walker-Blount-Etowah-Calhoun-
Cherokee-Cleburne-Pickens-Tuscaloosa-Jefferson-Shelby-St. Clair-
Talladega-Clay-Randolph-Sumter-Greene-Hale-Perry-Bibb-Chilton-
Coosa-Tallapoosa-Chambers-Marengo-Dallas-Autauga-Lowndes-Elmore-
Montgomery-Macon-Bullock-Lee-Russell-Pike-Barbour-
Including the cities of Hamilton, Sulligent, Vernon, Fayette, 
Double Springs, Jasper, Oneonta, Gadsden, Anniston, Centre, 
Heflin, Carrollton, Tuscaloosa, Birmingham, Hoover, Columbiana, 
Pelham, Alabaster, Pell City, Moody, Talladega, Sylacauga, 
Ashland, Roanoke, Livingston, Eutaw, Greensboro, Moundville, 
Marion, Centreville, Clanton, Rockford, Alexander City, 
Dadeville, Valley, Lanett, Lafayette, Demopolis, Linden, Selma, 
Prattville, Fort Deposit, Hayneville, Wetumpka, Tallassee, 
Montgomery, Tuskegee, Union Springs, Auburn, Opelika, 
Phenix City, Troy, and Eufaula
433 PM CDT Sat Apr 29 2017

...WIND ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING...
...WIND ADVISORY IN EFFECT FROM 10 AM TO 10 PM CDT SUNDAY...

The National Weather Service in Birmingham has issued a Wind
Advisory, which is in effect from 10 AM to 10 PM CDT Sunday. 

* TIMING...The strongest winds will be through 7 PM this evening
  and again kicking back up after 10 am Sunday morning.
  

* WINDS...Sustained winds of 15-25 mph, with gusts 35 to 40 from a
  southeast to south direction. The highest gusts will be in the 
  higher elevations.

* IMPACTS...Strong winds could result in large limbs and weak 
  trees to be blown down. Travel may also be dangerous at times 
  especially if traveling on an east to west oriented roadway. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory means that winds of 25 mph or higher are
expected. Winds this strong can make driving difficult...
especially for high profile vehicles. Use extra caution.


&&

$$
138 
WWUS74 KBMX 300016
NPWBMX

URGENT - WEATHER MESSAGE
National Weather Service Birmingham AL
716 PM CDT Sat Apr 29 2017

...Strong winds will be possible at times across Central
Alabama...

ALZ011>015-017>050-300830-
/O.EXP.KBMX.WI.Y.0004.000000T0000Z-170430T0000Z/
/O.EXT.KBMX.WI.Y.0005.170430T1300Z-170501T0300Z/
Marion-Lamar-Fayette-Winston-Walker-Blount-Etowah-Calhoun-
Cherokee-Cleburne-Pickens-Tuscaloosa-Jefferson-Shelby-St. Clair-
Talladega-Clay-Randolph-Sumter-Greene-Hale-Perry-Bibb-Chilton-
Coosa-Tallapoosa-Chambers-Marengo-Dallas-Autauga-Lowndes-Elmore-
Montgomery-Macon-Bullock-Lee-Russell-Pike-Barbour-
Including the cities of Hamilton, Sulligent, Vernon, Fayette, 
Double Springs, Jasper, Oneonta, Gadsden, Anniston, Centre, 
Heflin, Carrollton, Tuscaloosa, Birmingham, Hoover, Columbiana, 
Pelham, Alabaster, Pell City, Moody, Talladega, Sylacauga, 
Ashland, Roanoke, Livingston, Eutaw, Greensboro, Moundville, 
Marion, Centreville, Clanton, Rockford, Alexander City, 
Dadeville, Valley, Lanett, Lafayette, Demopolis, Linden, Selma, 
Prattville, Fort Deposit, Hayneville, Wetumpka, Tallassee, 
Montgomery, Tuskegee, Union Springs, Auburn, Opelika, 
Phenix City, Troy, and Eufaula
716 PM CDT Sat Apr 29 2017

...WIND ADVISORY NOW IN EFFECT FROM 8 AM TO 10 PM CDT SUNDAY...
...WIND ADVISORY HAS EXPIRED...

* TIMING...The strongest winds will be kicking back up after 8 am
  Sunday morning. 

* WINDS...Sustained winds of 15-25 mph, with gusts 35 to 40 from 
  a southeast to south direction. The highest gusts will be in 
  the higher elevations. 

* IMPACTS...Strong winds could result in large limbs and weak 
  trees to be blown down. Travel may also be dangerous at times 
  especially if traveling on an east to west oriented roadway. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory means that winds of 25 mph or higher are
expected. Winds this strong can make driving difficult...
especially for high profile vehicles. Use extra caution.

&&

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 29, 4:33 PM CDTWind AdvisoryBMXAutauga, Barbour, Bibb, Blount, Bullock, Calhoun and 33 more50 hr

Nearby

Wind Advisories in Alabama, 2017Every wind advisory 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.