Alert archive / Alabama / Heat Advisories in 2021
Heat Advisory 2, NWS Birmingham, AL
NWS Birmingham, AL issued this heat advisory at Aug 10, 2021, 4:31 AM CDT for 34 counties in Alabama. It took effect at Aug 10, 2021, 11:00 AM CDT. It was in force for 31 hr.
The area
The counties it named.
The facts
- Issued
- Aug 10, 2021, 4:31 AM CDT (09:31 UTC)
- In effect from
- Aug 10, 2021, 11:00 AM CDT
- Expired
- Aug 11, 2021, 6:26 PM CDT
- In force
- 31 hr
- Issued by
- NWS Birmingham, AL
All 34 counties
Autauga County, AL, Barbour County, AL, Bibb County, AL, Blount County, AL, Bullock County, AL, Calhoun County, AL, Chilton County, AL, Clay 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, Lowndes County, AL, Macon County, AL, Marengo County, AL, Marion County, AL, Montgomery County, AL, Perry County, AL, Pickens County, AL, Pike 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), 19 km from the middle of the area, began a volume at 09:35 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, 9.5 hours before the alert went out and 20 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
- 842 J/kg
- Mixed-layer CIN
- -66 J/kg
- Mixed-layer LCL
- 1437 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 23 m²/s²
- 0-3 km storm-relative helicity
- 37 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
228 WWUS74 KBMX 100931 NPWBMX URGENT - WEATHER MESSAGE National Weather Service Birmingham AL 431 AM CDT Tue Aug 10 2021 ALZ011>015-022>025-027-030>037-039>046-048>050-110200- /O.NEW.KBMX.HT.Y.0002.210810T1600Z-210811T0200Z/ Marion-Lamar-Fayette-Winston-Walker-Pickens-Tuscaloosa-Jefferson- Shelby-Talladega-Sumter-Greene-Hale-Perry-Bibb-Chilton-Coosa- Tallapoosa-Marengo-Dallas-Autauga-Lowndes-Elmore-Montgomery-Macon- Bullock-Russell-Pike-Barbour- Including the cities of Hamilton, Sulligent, Vernon, Fayette, Double Springs, Jasper, Carrollton, Tuscaloosa, Birmingham, Hoover, Columbiana, Pelham, Alabaster, Talladega, Sylacauga, Livingston, Eutaw, Greensboro, Moundville, Marion, Centreville, Clanton, Rockford, Alexander City, Dadeville, Demopolis, Linden, Selma, Prattville, Fort Deposit, Hayneville, Wetumpka, Tallassee, Montgomery, Tuskegee, Union Springs, Phenix City, Troy, and Eufaula 431 AM CDT Tue Aug 10 2021 ...HEAT ADVISORY IN EFFECT FROM 11 AM THIS MORNING TO 9 PM CDT THIS EVENING... * WHAT...Heat index values up to 107 expected. * WHERE...West and south halves of Central Alabama. * WHEN...From 11 AM this morning to 9 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ 08
5 follow-up statements
104 WWUS74 KBMX 101720 NPWBMX URGENT - WEATHER MESSAGE National Weather Service Birmingham AL 1220 PM CDT Tue Aug 10 2021 ALZ017>019-026-028-111000- /O.EXB.KBMX.HT.Y.0002.000000T0000Z-210812T0200Z/ Blount-Etowah-Calhoun-St. Clair-Clay- Including the cities of Oneonta, Gadsden, Anniston, Pell City, Moody, and Ashland 1220 PM CDT Tue Aug 10 2021 ...HEAT ADVISORY IN EFFECT UNTIL 9 PM CDT WEDNESDAY... * WHAT...Heat index values near 105 each afternoon. * WHERE...Blount, Etowah, Calhoun, St. Clair and Clay Counties. * WHEN...Until 9 PM CDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ ALZ011>015-022>025-027-030>037-039>046-048>050-111000- /O.EXT.KBMX.HT.Y.0002.000000T0000Z-210812T0200Z/ Marion-Lamar-Fayette-Winston-Walker-Pickens-Tuscaloosa-Jefferson- Shelby-Talladega-Sumter-Greene-Hale-Perry-Bibb-Chilton-Coosa- Tallapoosa-Marengo-Dallas-Autauga-Lowndes-Elmore-Montgomery-Macon- Bullock-Russell-Pike-Barbour- Including the cities of Hamilton, Sulligent, Vernon, Fayette, Double Springs, Jasper, Carrollton, Tuscaloosa, Birmingham, Hoover, Columbiana, Pelham, Alabaster, Talladega, Sylacauga, Livingston, Eutaw, Greensboro, Moundville, Marion, Centreville, Clanton, Rockford, Alexander City, Dadeville, Demopolis, Linden, Selma, Prattville, Fort Deposit, Hayneville, Wetumpka, Tallassee, Montgomery, Tuskegee, Union Springs, Phenix City, Troy, and Eufaula 1220 PM CDT Tue Aug 10 2021 ...HEAT ADVISORY NOW IN EFFECT UNTIL 9 PM CDT WEDNESDAY... * WHAT...Heat index values near 105 each afternoon. * WHERE...West and south halves of Central Alabama. * WHEN...Until 9 PM CDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$
342 WWUS74 KBMX 110747 NPWBMX URGENT - WEATHER MESSAGE National Weather Service Birmingham AL 247 AM CDT Wed Aug 11 2021 ALZ011>015-017>019-022>028-030>037-039>046-048>050-120200- /O.CON.KBMX.HT.Y.0002.000000T0000Z-210812T0200Z/ Marion-Lamar-Fayette-Winston-Walker-Blount-Etowah-Calhoun-Pickens- Tuscaloosa-Jefferson-Shelby-St. Clair-Talladega-Clay-Sumter- Greene-Hale-Perry-Bibb-Chilton-Coosa-Tallapoosa-Marengo-Dallas- Autauga-Lowndes-Elmore-Montgomery-Macon-Bullock-Russell-Pike- Barbour- Including the cities of Hamilton, Sulligent, Vernon, Fayette, Double Springs, Jasper, Oneonta, Gadsden, Anniston, Carrollton, Tuscaloosa, Birmingham, Hoover, Columbiana, Pelham, Alabaster, Pell City, Moody, Talladega, Sylacauga, Ashland, Livingston, Eutaw, Greensboro, Moundville, Marion, Centreville, Clanton, Rockford, Alexander City, Dadeville, Demopolis, Linden, Selma, Prattville, Fort Deposit, Hayneville, Wetumpka, Tallassee, Montgomery, Tuskegee, Union Springs, Phenix City, Troy, and Eufaula 247 AM CDT Wed Aug 11 2021 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING... * WHAT...Heat index values near 105 degrees. * WHERE...Most of Central Alabama. * WHEN...Until 9 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$
609 WWUS74 KBMX 111841 NPWBMX URGENT - WEATHER MESSAGE National Weather Service Birmingham AL 141 PM CDT Wed Aug 11 2021 ALZ011>015-017>019-022>028-030>037-039>046-048>050-120200- /O.CON.KBMX.HT.Y.0002.000000T0000Z-210812T0200Z/ Marion-Lamar-Fayette-Winston-Walker-Blount-Etowah-Calhoun-Pickens- Tuscaloosa-Jefferson-Shelby-St. Clair-Talladega-Clay-Sumter- Greene-Hale-Perry-Bibb-Chilton-Coosa-Tallapoosa-Marengo-Dallas- Autauga-Lowndes-Elmore-Montgomery-Macon-Bullock-Russell-Pike- Barbour- Including the cities of Hamilton, Sulligent, Vernon, Fayette, Double Springs, Jasper, Oneonta, Gadsden, Anniston, Carrollton, Tuscaloosa, Birmingham, Hoover, Columbiana, Pelham, Alabaster, Pell City, Moody, Talladega, Sylacauga, Ashland, Livingston, Eutaw, Greensboro, Moundville, Marion, Centreville, Clanton, Rockford, Alexander City, Dadeville, Demopolis, Linden, Selma, Prattville, Fort Deposit, Hayneville, Wetumpka, Tallassee, Montgomery, Tuskegee, Union Springs, Phenix City, Troy, and Eufaula 141 PM CDT Wed Aug 11 2021 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING... * WHAT...Heat index values near 105 degrees. * WHERE...Most of Central Alabama. * WHEN...Until 9 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$
901 WWUS74 KBMX 111917 NPWBMX URGENT - WEATHER MESSAGE National Weather Service Birmingham AL 217 PM CDT Wed Aug 11 2021 ALZ017>019-024>028-035>037-112030- /O.CAN.KBMX.HT.Y.0002.000000T0000Z-210812T0200Z/ Blount-Etowah-Calhoun-Jefferson-Shelby-St. Clair-Talladega-Clay- Chilton-Coosa-Tallapoosa- Including the cities of Oneonta, Gadsden, Anniston, Birmingham, Hoover, Columbiana, Pelham, Alabaster, Pell City, Moody, Talladega, Sylacauga, Ashland, Clanton, Rockford, Alexander City, and Dadeville 217 PM CDT Wed Aug 11 2021 ...HEAT ADVISORY IS CANCELLED... Showers and thunderstorms have developed in the advisory area and the cooler temperatures will keep heat indices below critical values for outdoor activities. $$ ALZ011>015-022-023-030>034-039>046-048>050-120200- /O.CON.KBMX.HT.Y.0002.000000T0000Z-210812T0200Z/ Marion-Lamar-Fayette-Winston-Walker-Pickens-Tuscaloosa-Sumter- Greene-Hale-Perry-Bibb-Marengo-Dallas-Autauga-Lowndes-Elmore- Montgomery-Macon-Bullock-Russell-Pike-Barbour- Including the cities of Hamilton, Sulligent, Vernon, Fayette, Double Springs, Jasper, Carrollton, Tuscaloosa, Livingston, Eutaw, Greensboro, Moundville, Marion, Centreville, Demopolis, Linden, Selma, Prattville, Fort Deposit, Hayneville, Wetumpka, Tallassee, Montgomery, Tuskegee, Union Springs, Phenix City, Troy, and Eufaula 217 PM CDT Wed Aug 11 2021 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING... * WHAT...Heat index values near 105 degrees. * WHERE...Southern and West Central Alabama. * WHEN...Until 9 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$
000 WWUS74 KBMX 112326 NPWBMX URGENT - WEATHER MESSAGE National Weather Service Birmingham AL 626 PM CDT Wed Aug 11 2021 ALZ011>015-022-023-030>034-039>046-048>050-120030- /O.CAN.KBMX.HT.Y.0002.000000T0000Z-210812T0200Z/ Marion-Lamar-Fayette-Winston-Walker-Pickens-Tuscaloosa-Sumter- Greene-Hale-Perry-Bibb-Marengo-Dallas-Autauga-Lowndes-Elmore- Montgomery-Macon-Bullock-Russell-Pike-Barbour- Including the cities of Hamilton, Sulligent, Vernon, Fayette, Double Springs, Jasper, Carrollton, Tuscaloosa, Livingston, Eutaw, Greensboro, Moundville, Marion, Centreville, Demopolis, Linden, Selma, Prattville, Fort Deposit, Hayneville, Wetumpka, Tallassee, Montgomery, Tuskegee, Union Springs, Phenix City, Troy, and Eufaula 626 PM CDT Wed Aug 11 2021 ...HEAT ADVISORY IS CANCELLED... The Heat Advisory has been cancelled. Although there remains a small chance some locations will reach the 105 degree mark with Heat Indices the next few days, it appears that the widespread high readings are done for now. $$
The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 10, 1:21 PM CDT | Special Weather Statement | BMX | Lee | 24 min |
| Aug 10, 2:08 PM CDT | Special Weather Statement | BMX | Russell | 37 min |
| Aug 10, 2:39 PM CDT | Special Weather Statement | BMX | Chambers | 36 min |
| Aug 10, 2:40 PM CDT | Special Weather Statement | BMX | Macon | 35 min |
| Aug 10, 3:19 PM CDT | Special Weather Statement | BMX | Jefferson | 26 min |
| Aug 10, 3:30 PM CDT | Areal Flood Advisory | BMX | Jefferson | 2 hr |
| Aug 10, 3:47 PM CDT | Flash Flood Warning | BMX | Jefferson | 2 hr |
| Aug 10, 3:50 PM CDT | Special Weather Statement | BMX | Bullock | 40 min |
| Aug 10, 3:59 PM CDT | Special Weather Statement | BMX | Jefferson | 31 min |
| Aug 10, 4:19 PM CDT | Special Weather Statement | BMX | Blount | 26 min |
| Aug 10, 4:32 PM CDT | Special Weather Statement | BMX | Jefferson | 28 min |
| Aug 10, 4:35 PM CDT | Special Weather Statement | BMX | Pike | 40 min |
| Aug 10, 4:46 PM CDT | Special Weather Statement | BMX | Blount | 29 min |
| Aug 10, 5:23 PM CDT | Areal Flood Advisory | BMX | Montgomery | 98 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.