Alert archive / Alabama / Wind Advisories in 2020
Wind Advisory 4, NWS Birmingham, AL
NWS Birmingham, AL issued this wind advisory at Apr 13, 2020, 1:29 AM CDT for 16 counties in Alabama. It took effect at Apr 13, 2020, 4:00 AM CDT. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Apr 13, 2020, 1:29 AM CDT (06:29 UTC)
- In effect from
- Apr 13, 2020, 4:00 AM CDT
- Expired
- Apr 13, 2020, 8:00 AM CDT
- In force
- 4 hr
- Issued by
- NWS Birmingham, AL
Counties Autauga County, AL, Calhoun County, AL, Chambers County, AL, Cherokee County, AL, Chilton County, AL, Clay County, AL, Cleburne County, AL, Coosa County, AL, Elmore County, AL, Etowah County, AL, Lee County, AL, Macon County, AL, Randolph County, AL, Shelby County, AL, Talladega County, AL, Tallapoosa County, AL
The radar
The Maxwell AFB radar (KMXX), 71 km from the middle of the area, began a volume at 06:31 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, 6.5 hours before the alert went out and 78 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
- 533 J/kg
- Mixed-layer CIN
- -55 J/kg
- Mixed-layer LCL
- 847 m above ground
- 0-6 km bulk shear
- 63 kt
- 0-1 km storm-relative helicity
- 401 m²/s²
- 0-3 km storm-relative helicity
- 509 m²/s²
- Significant tornado parameter
- 1.4
- Supercell composite
- 8.4
The text
As transmitted.
163 WWUS74 KBMX 130629 NPWBMX URGENT - WEATHER MESSAGE National Weather Service Birmingham AL 129 AM CDT Mon Apr 13 2020 ALZ018>021-025-027>029-035>038-041-043-045-047-131300- /O.UPG.KBMX.WI.Y.0003.000000T0000Z-200413T1300Z/ /O.NEW.KBMX.HW.W.0001.200413T0629Z-200413T0900Z/ /O.NEW.KBMX.WI.Y.0004.200413T0900Z-200413T1300Z/ Etowah-Calhoun-Cherokee-Cleburne-Shelby-Talladega-Clay-Randolph- Chilton-Coosa-Tallapoosa-Chambers-Autauga-Elmore-Macon-Lee- Including the cities of Gadsden, Anniston, Centre, Heflin, Columbiana, Pelham, Alabaster, Talladega, Sylacauga, Ashland, Roanoke, Clanton, Rockford, Alexander City, Dadeville, Valley, Lanett, Lafayette, Prattville, Wetumpka, Tallassee, Tuskegee, Auburn, and Opelika 129 AM CDT Mon Apr 13 2020 ...HIGH WIND WARNING IN EFFECT UNTIL 4 AM CDT EARLY THIS MORNING... ...WIND ADVISORY IN EFFECT UNTIL 8 AM CDT THIS MORNING... * WHAT...For the High Wind Warning, west winds greater than 50 mph with gusts up to 60 mph. For the Wind Advisory, west winds 15 to 25 mph expected with gusts up to 50 mph. * WHERE...Portions of central, east central and northeast Alabama. * WHEN...For the High Wind Warning, until 4 AM CDT early this morning. For the Wind Advisory, until 8 AM CDT this morning. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$ ALZ011>015-017-022>024-026-030>034-039-040-042-044-046-048>050- 131300- /O.CON.KBMX.WI.Y.0003.000000T0000Z-200413T1300Z/ Marion-Lamar-Fayette-Winston-Walker-Blount-Pickens-Tuscaloosa- Jefferson-St. Clair-Sumter-Greene-Hale-Perry-Bibb-Marengo-Dallas- Lowndes-Montgomery-Bullock-Russell-Pike-Barbour- Including the cities of Hamilton, Sulligent, Vernon, Fayette, Double Springs, Jasper, Oneonta, Carrollton, Tuscaloosa, Birmingham, Hoover, Pell City, Moody, Livingston, Eutaw, Greensboro, Moundville, Marion, Centreville, Demopolis, Linden, Selma, Fort Deposit, Hayneville, Montgomery, Union Springs, Phenix City, Troy, and Eufaula 129 AM CDT Mon Apr 13 2020 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT THIS MORNING... * WHAT...South winds 15 to 30 mph with gusts up to 50 mph. * WHERE...Portions of central, east central, northeast, northwest, southeast and west central Alabama. * WHEN...Until 8 AM CDT this morning. * IMPACTS...Tents and other temporary outdoor structures that are vulnerable to these types of winds could be compromised. Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
2 follow-up statements
962 WWUS74 KBMX 130702 NPWBMX URGENT - WEATHER MESSAGE National Weather Service Birmingham AL 202 AM CDT Mon Apr 13 2020 ALZ018>021-025-027>029-035>038-041-043-045-047-131300- /O.CON.KBMX.HW.W.0001.000000T0000Z-200413T0900Z/ /O.CON.KBMX.WI.Y.0004.200413T0900Z-200413T1300Z/ Etowah-Calhoun-Cherokee-Cleburne-Shelby-Talladega-Clay-Randolph- Chilton-Coosa-Tallapoosa-Chambers-Autauga-Elmore-Macon-Lee- Including the cities of Gadsden, Anniston, Centre, Heflin, Columbiana, Pelham, Alabaster, Talladega, Sylacauga, Ashland, Roanoke, Clanton, Rockford, Alexander City, Dadeville, Valley, Lanett, Lafayette, Prattville, Wetumpka, Tallassee, Tuskegee, Auburn, and Opelika 202 AM CDT Mon Apr 13 2020 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 4 AM CDT EARLY THIS MORNING... ...WIND ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT THIS MORNING... * WHAT...For the High Wind Warning, west winds greater than 50 mph with gusts up to 60 mph. For the Wind Advisory, west winds 15 to 25 mph expected with gusts up to 50 mph. * WHERE...Portions of central, east central and northeast Alabama. * WHEN...For the High Wind Warning, until 4 AM CDT early this morning. For the Wind Advisory, until 8 AM CDT this morning. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$ ALZ011>015-017-022>024-026-030>034-039-040-042-044-046-048>050- 131300- /O.CON.KBMX.WI.Y.0003.000000T0000Z-200413T1300Z/ Marion-Lamar-Fayette-Winston-Walker-Blount-Pickens-Tuscaloosa- Jefferson-St. Clair-Sumter-Greene-Hale-Perry-Bibb-Marengo-Dallas- Lowndes-Montgomery-Bullock-Russell-Pike-Barbour- Including the cities of Hamilton, Sulligent, Vernon, Fayette, Double Springs, Jasper, Oneonta, Carrollton, Tuscaloosa, Birmingham, Hoover, Pell City, Moody, Livingston, Eutaw, Greensboro, Moundville, Marion, Centreville, Demopolis, Linden, Selma, Fort Deposit, Hayneville, Montgomery, Union Springs, Phenix City, Troy, and Eufaula 202 AM CDT Mon Apr 13 2020 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT THIS MORNING... * WHAT...South winds 15 to 30 mph with gusts up to 50 mph. * WHERE...Portions of central, east central, northeast, northwest, southeast and west central Alabama. * WHEN...Until 8 AM CDT this morning. * IMPACTS...Tents and other temporary outdoor structures that are vulnerable to these types of winds could be compromised. Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
694 WWUS74 KBMX 130934 NPWBMX URGENT - WEATHER MESSAGE National Weather Service Birmingham AL 434 AM CDT Mon Apr 13 2020 ALZ018>021-025-027>029-035>038-041-043-045-047-131300- /O.CON.KBMX.WI.Y.0004.000000T0000Z-200413T1300Z/ Etowah-Calhoun-Cherokee-Cleburne-Shelby-Talladega-Clay-Randolph- Chilton-Coosa-Tallapoosa-Chambers-Autauga-Elmore-Macon-Lee- Including the cities of Gadsden, Anniston, Centre, Heflin, Columbiana, Pelham, Alabaster, Talladega, Sylacauga, Ashland, Roanoke, Clanton, Rockford, Alexander City, Dadeville, Valley, Lanett, Lafayette, Prattville, Wetumpka, Tallassee, Tuskegee, Auburn, and Opelika 434 AM CDT Mon Apr 13 2020 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT THIS MORNING... * WHAT...West winds 15 to 25 mph expected with gusts up to 50 mph. * WHERE...Portions of central, east central and northeast Alabama. * WHEN...Until 8 AM CDT this morning. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ ALZ011>015-017-022>024-026-030>034-039-040-042-044-046-048>050- 131300- /O.CON.KBMX.WI.Y.0003.000000T0000Z-200413T1300Z/ Marion-Lamar-Fayette-Winston-Walker-Blount-Pickens-Tuscaloosa- Jefferson-St. Clair-Sumter-Greene-Hale-Perry-Bibb-Marengo-Dallas- Lowndes-Montgomery-Bullock-Russell-Pike-Barbour- Including the cities of Hamilton, Sulligent, Vernon, Fayette, Double Springs, Jasper, Oneonta, Carrollton, Tuscaloosa, Birmingham, Hoover, Pell City, Moody, Livingston, Eutaw, Greensboro, Moundville, Marion, Centreville, Demopolis, Linden, Selma, Fort Deposit, Hayneville, Montgomery, Union Springs, Phenix City, Troy, and Eufaula 434 AM CDT Mon Apr 13 2020 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT THIS MORNING... * WHAT...South winds 15 to 30 mph with gusts up to 50 mph. * WHERE...Portions of central, east central, northeast, northwest, southeast and west central Alabama. * WHEN...Until 8 AM CDT this morning. * IMPACTS...Tents and other temporary outdoor structures that are vulnerable to these types of winds could be compromised. Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 12, 7:10 PM CDT | Tornado Warning | BMX | Greene | 22 min |
| Apr 12, 7:14 PM CDT | Tornado Warning | BMX | Sumter | 26 min |
| Apr 12, 7:16 PM CDT | Areal Flood Advisory | BMX | Cherokee, Etowah, St. Clair | 6 hr |
| Apr 12, 8:08 PM CDT | Severe Thunderstorm Warning | BMX | Fayette, Walker | 55 min |
| Apr 12, 8:14 PM CDT | Areal Flood Advisory | BMX | Fayette, Lamar, Marion, Walker, Winston | 5 hr |
| Apr 12, 8:15 PM CDT | Tornado Warning | BMX | Walker, Winston | 15 min |
| Apr 12, 8:25 PM CDT | Severe Thunderstorm Warning | BMX | Tuscaloosa | 38 min |
| Apr 12, 8:29 PM CDT | Flash Flood Warning | BMX | Fayette, Greene, Jefferson, Pickens, Sumter, Tuscaloosa and 1 more | 5 hr |
| Apr 12, 8:32 PM CDT | Tornado Warning | BMX | Jefferson, Tuscaloosa | 21 min |
| Apr 12, 8:36 PM CDT | Severe Thunderstorm Warning | BMX | Blount, Jefferson | 54 min |
| Apr 12, 8:36 PM CDT | Tornado Warning | BMX | Jefferson, Tuscaloosa | 17 min |
| Apr 12, 8:49 PM CDT | River Flood Warning | BMX | Greene, Hale, Marengo, Sumter | 5 days |
| Apr 12, 8:51 PM CDT | Severe Thunderstorm Warning | BMX | Jefferson | 39 min |
| Apr 12, 8:52 PM CDT | River Flood Warning | BMX | Jefferson, Tuscaloosa, Walker | 66 hr |
| Apr 12, 8:58 PM CDT | River Flood Warning | BMX | Greene, Hale, Marengo, Tuscaloosa | 52 hr |
| Apr 12, 8:58 PM CDT | River Flood Warning | BMX | Greene, Hale, Marengo, Sumter, Tuscaloosa | 61 hr |
| Apr 12, 9:12 PM CDT | Tornado Warning | BMX | Blount | 20 min |
| Apr 12, 9:19 PM CDT | Severe Thunderstorm Warning | BMX | Blount, Etowah, Jefferson, St. Clair, Shelby | 71 min |
| Apr 12, 9:33 PM CDT | Tornado Warning | BMX | Marengo | 27 min |
| Apr 12, 10:02 PM CDT | Severe Thunderstorm Warning | BMX | Dallas | 27 min |
| Apr 12, 10:22 PM CDT | Flash Flood Warning | BMX | Blount, Calhoun, Cherokee, Etowah, St. Clair | 4 hr |
| Apr 12, 10:24 PM CDT | Tornado Warning | BMX | Cherokee | 36 min |
| Apr 12, 10:37 PM CDT | Severe Thunderstorm Warning | BMX | Lowndes, Montgomery | 53 min |
| Apr 12, 10:47 PM CDT | Severe Thunderstorm Warning | BMX | Calhoun, Cherokee, Cleburne, Etowah | 58 min |
| Apr 12, 10:53 PM CDT | Severe Thunderstorm Warning | BMX | Autauga, Elmore | 43 min |
| Apr 12, 10:59 PM CDT | Severe Thunderstorm Warning | BMX | Chilton, Clay, Coosa, Shelby, Talladega, Tallapoosa | 43 min |
| Apr 12, 11:01 PM CDT | Areal Flood Advisory | BMX | Greene, Hale, Pickens, Sumter | 3 hr |
| Apr 12, 11:15 PM CDT | Severe Thunderstorm Warning | BMX | Bullock, Macon, Montgomery, Tallapoosa | 60 min |
| Apr 12, 11:16 PM CDT | Special Weather Statement | BMX | Fayette, Lamar, Marion | 74 min |
| Apr 12, 11:24 PM CDT | Areal Flood Warning | BMX | Fayette, Tuscaloosa, Walker | 6 hr |
| Apr 12, 11:30 PM CDT | Severe Thunderstorm Warning | BMX | Lee, Russell | 75 min |
| Apr 13, 12:08 AM CDT | Special Weather Statement | BMX | Barbour, Bullock, Pike | 82 min |
| Apr 13, 12:11 AM CDT | Severe Thunderstorm Warning | BMX | Pike | 64 min |
| Apr 13, 12:13 AM CDT | Areal Flood Advisory | BMX | Lowndes, Montgomery | 3 hr |
| Apr 13, 12:18 AM CDT | Severe Thunderstorm Warning | BMX | Chambers | 16 min |
| Apr 13, 12:43 AM CDT | Severe Thunderstorm Warning | BMX | Barbour, Bullock | 53 min |
| Apr 13, 1:04 AM CDT | Areal Flood Advisory | BMX | Barbour, Bullock, Pike, Russell | 3 hr |
| Apr 13, 1:29 AM CDT | High Wind Warning | BMX | Autauga, Calhoun, Chambers, Cherokee, Chilton, Clay and 10 more | 3 hr |
| Apr 13, 2:25 AM CDT | River Flood Warning | BMX | Bibb, Jefferson, Shelby | 18 hr |
| Apr 13, 4:08 AM CDT | Areal Flood Warning | BMX | Cherokee | 12 hr |
| Apr 13, 7:43 AM CDT | Areal Flood Warning | BMX | Cherokee | 3 days |
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.