Alert archive / Alabama / Wind Advisories in 2021
Wind Advisory 7, NWS Birmingham, AL
NWS Birmingham, AL issued this wind advisory at Apr 24, 2021, 7:04 PM CDT for 35 counties in Alabama. It was in force for 9 hr.
The area
The counties it named.
The facts
- Issued
- Apr 24, 2021, 7:04 PM CDT (00:04 UTC)
- Expired
- Apr 25, 2021, 4:00 AM CDT
- In force
- 9 hr
- Issued by
- NWS Birmingham, AL
All 35 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, Greene County, AL, Hale County, AL, Jefferson County, AL, Lee County, AL, Lowndes County, AL, Macon County, AL, Marengo 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
The radar
The Birmingham radar (KBMX), 39 km from the middle of the area, began a volume at 00:06 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, 0.1 hours before the alert went out and 40 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.
- Mixed-layer CAPE
- 107 J/kg
- Mixed-layer CIN
- -60 J/kg
- Mixed-layer LCL
- 1095 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- -56 m²/s²
- 0-3 km storm-relative helicity
- 196 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.4
The text
As transmitted.
781 WWUS74 KBMX 250004 NPWBMX URGENT - WEATHER MESSAGE National Weather Service Birmingham AL 704 PM CDT Sat Apr 24 2021 ALZ015-017>050-250900- /O.NEW.KBMX.WI.Y.0007.210425T0004Z-210426T0900Z/ 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 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 704 PM CDT Sat Apr 24 2021 ...WIND ADVISORY IN EFFECT UNTIL 4 AM CDT MONDAY... * WHAT...North northwest winds 15 to 20 mph. Some gusts may reach 40-45 mph. * WHERE...A large part of Central Alabama. * WHEN...Until 4 AM CDT Monday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...These winds will be in the vicinity of a cold front moving through the state. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
2 follow-up statements
973 WWUS74 KBMX 250010 NPWBMX URGENT - WEATHER MESSAGE National Weather Service Birmingham AL 710 PM CDT Sat Apr 24 2021 ALZ015-017>050-250900- /O.CON.KBMX.WI.Y.0007.000000T0000Z-210426T0900Z/ Walker-Blount-Etowah-Calhoun-Cherokee-Cleburne-Pickens-Tuscaloosa- Jefferson-Shelby-St. Clair-Talladega-Clay-Randolph-Sumter-Greene- Hale-Perry-Bibb-Chilton-Coosa-Tallapoosa-Chambers-Marengo-Dallas- Autauga-Lowndes-Elmore-Montgomery-Macon-Bullock-Lee-Russell-Pike- Barbour- Including the cities of Jasper, Oneonta, Gadsden, Anniston, Centre, Heflin, Carrollton, Tuscaloosa, Birmingham, Hoover, Columbiana, Pelham, Alabaster, Pell City, Moody, Talladega, Sylacauga, Ashland, Roanoke, Livingston, Eutaw, Greensboro, Moundville, Marion, Centreville, Clanton, Rockford, Alexander City, Dadeville, Valley, Lanett, Lafayette, Demopolis, Linden, Selma, Prattville, Fort Deposit, Hayneville, Wetumpka, Tallassee, Montgomery, Tuskegee, Union Springs, Auburn, Opelika, Phenix City, Troy, and Eufaula 710 PM CDT Sat Apr 24 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 4 AM CDT MONDAY... * WHAT...North northwest winds 15 to 20 mph. Some gusts may reach 40-45 mph. * WHERE...A large part of Central Alabama. * WHEN...Until 4 AM CDT Monday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...These winds will be ahead and near a cold front moving through the area. The winds will diminish slowly after the front passes by from west to east overnight. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
366 WWUS74 KBMX 250013 NPWBMX URGENT - WEATHER MESSAGE National Weather Service Birmingham AL 713 PM CDT Sat Apr 24 2021 ALZ015-017>050-250815- /O.EXT.KBMX.WI.Y.0007.000000T0000Z-210425T0900Z/ 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 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 713 PM CDT Sat Apr 24 2021 ...WIND ADVISORY NOW IN EFFECT UNTIL 4 AM CDT SUNDAY... * WHAT...North northwest winds 15 to 20 mph. Some gusts may reach 40-45 mph. * WHERE...A large part of Central Alabama. * WHEN...Until 4 AM CDT Sunday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...The gusty winds will be ahead and near a cold front moving west to east across the state overnight. The winds will diminish slowly after the front passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 24, 7:51 PM CDT | Special Weather Statement | BMX | Chambers | 39 min |
Nearby
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.