Alert archive / Mississippi / Heat Advisories in 2021
Heat Advisory 13, NWS Jackson, MS
NWS Jackson, MS issued this heat advisory at Sep 1, 2021, 4:08 AM CDT for 24 counties in Mississippi; Ashley County, Chicot County, Arkansas; 9 parishes in Louisiana. It took effect at Sep 1, 2021, 10:00 AM CDT. It was in force for 9 hr.
The area
The counties it named.
The facts
- Issued
- Sep 1, 2021, 4:08 AM CDT (09:08 UTC)
- In effect from
- Sep 1, 2021, 10:00 AM CDT
- Expired
- Sep 1, 2021, 7:00 PM CDT
- In force
- 9 hr
- Issued by
- NWS Jackson, MS
All 35 counties
Ashley County, AR, Chicot County, AR, Catahoula Parish, LA, Concordia Parish, LA, East Carroll Parish, LA, Franklin Parish, LA, Madison Parish, LA, Morehouse Parish, LA, Richland Parish, LA, Tensas Parish, LA, West Carroll Parish, LA, Adams County, MS, Bolivar County, MS, Carroll County, MS, Claiborne County, MS, Copiah County, MS, Franklin County, MS, Hinds County, MS, Holmes County, MS, Humphreys County, MS, Issaquena County, MS, Jefferson County, MS, Jefferson Davis County, MS, Lawrence County, MS, Leflore County, MS, Lincoln County, MS, Madison County, MS, Marion County, MS, Rankin County, MS, Sharkey County, MS, Simpson County, MS, Sunflower County, MS, Warren County, MS, Washington County, MS, Yazoo County, MS
The radar
The Jackson/Brandon,MS radar (KDGX), 80 km from the middle of the area, began a volume at 09:12 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
Jackson, MS (KJAN), launched 00:00Z, 9.1 hours before the alert went out and 70 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
- 506 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 1264 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 32 m²/s²
- 0-3 km storm-relative helicity
- 60 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted.
752 WWUS74 KJAN 010908 NPWJAN URGENT - WEATHER MESSAGE National Weather Service Jackson MS 408 AM CDT Wed Sep 1 2021 ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025-027-034>036- 040>043-047>049-053>055-059>064-072-011715- /O.NEW.KJAN.HT.Y.0013.210901T1500Z-210902T0000Z/ Ashley-Chicot-Morehouse-West Carroll-East Carroll-Richland- Madison LA-Franklin LA-Catahoula-Tensas-Concordia-Bolivar- Sunflower-Leflore-Carroll-Washington-Humphreys-Holmes-Issaquena- Sharkey-Yazoo-Madison MS-Warren-Hinds-Rankin-Claiborne-Copiah- Simpson-Jefferson-Adams-Franklin MS-Lincoln-Lawrence- Jefferson Davis-Marion- Including the cities of Crossett, North Crossett, Hamburg, West Crossett, Dermott, Lake Village, Eudora, Bastrop, Oak Grove, Epps, Lake Providence, Rayville, Delhi, Tallulah, Winnsboro, Jonesville, Harrisonburg, Newellton, St. Joseph, Waterproof, Vidalia, Ferriday, West Ferriday, Cleveland, Indianola, Ruleville, Greenwood, Vaiden, North Carrollton, Carrollton, Greenville, Belzoni, Isola, Durant, Tchula, Lexington, Pickens, Goodman, Mayersville, Rolling Fork, Anguilla, Yazoo City, Ridgeland, Madison, Canton, Vicksburg, Jackson, Pearl, Brandon, Richland, Port Gibson, Crystal Springs, Hazlehurst, Wesson, Magee, Mendenhall, Fayette, Natchez, Bude, Roxie, Meadville, Brookhaven, Monticello, New Hebron, Prentiss, Bassfield, and Columbia 408 AM CDT Wed Sep 1 2021 ...HEAT ADVISORY IN EFFECT FROM 10 AM THIS MORNING TO 7 PM CDT THIS EVENING... * WHAT...Heat index values of 105 to 110 degrees expected. * WHERE...Portions of northeast Louisiana, southeast Arkansas and central Mississippi generally along and west of the Interstate 55 corridor. * WHEN...From 10 AM to 7 PM CDT. * 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. && $$ 28
1 follow-up statement
132 WWUS74 KJAN 011935 NPWJAN URGENT - WEATHER MESSAGE National Weather Service Jackson MS 235 PM CDT Wed Sep 1 2021 ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025-027-034>036- 040>043-047>049-053>055-059>064-072-020000- /O.CON.KJAN.HT.Y.0013.000000T0000Z-210902T0000Z/ Ashley-Chicot-Morehouse-West Carroll-East Carroll-Richland- Madison LA-Franklin LA-Catahoula-Tensas-Concordia-Bolivar- Sunflower-Leflore-Carroll-Washington-Humphreys-Holmes-Issaquena- Sharkey-Yazoo-Madison MS-Warren-Hinds-Rankin-Claiborne-Copiah- Simpson-Jefferson-Adams-Franklin MS-Lincoln-Lawrence- Jefferson Davis-Marion- Including the cities of Crossett, North Crossett, Hamburg, West Crossett, Dermott, Lake Village, Eudora, Bastrop, Oak Grove, Epps, Lake Providence, Rayville, Delhi, Tallulah, Winnsboro, Jonesville, Harrisonburg, Newellton, St. Joseph, Waterproof, Vidalia, Ferriday, West Ferriday, Cleveland, Indianola, Ruleville, Greenwood, Vaiden, North Carrollton, Carrollton, Greenville, Belzoni, Isola, Durant, Tchula, Lexington, Pickens, Goodman, Mayersville, Rolling Fork, Anguilla, Yazoo City, Ridgeland, Madison, Canton, Vicksburg, Jackson, Pearl, Brandon, Richland, Port Gibson, Crystal Springs, Hazlehurst, Wesson, Magee, Mendenhall, Fayette, Natchez, Bude, Roxie, Meadville, Brookhaven, Monticello, New Hebron, Prentiss, Bassfield, and Columbia 235 PM CDT Wed Sep 1 2021 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING... * WHAT...Heat index values of 105 to 110 degrees expected. * WHERE...Portions of northeast Louisiana, southeast Arkansas and central Mississippi generally along and west of the Interstate 55 corridor. * WHEN...From 10 AM to 7 PM CDT. * 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. && $$ DL
The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 1, 1:03 PM CDT | Special Weather Statement | JAN | Lowndes | 42 min |
| Sep 1, 1:10 PM CDT | Severe Thunderstorm Warning | JAN | Lowndes | 38 min |
| Sep 1, 2:37 PM CDT | Special Weather Statement | JAN | Noxubee | 23 min |
| Sep 1, 2:46 PM CDT | Special Weather Statement | JAN | Clay | 29 min |
| Sep 1, 3:13 PM CDT | Special Weather Statement | JAN | Choctaw | 32 min |
| Sep 1, 3:25 PM CDT | Severe Thunderstorm Warning | JAN | Clay, Lowndes, Noxubee, Oktibbeha | 50 min |
| Sep 1, 3:30 PM CDT | Severe Thunderstorm Warning | JAN | Attala, Choctaw, Winston | 45 min |
| Sep 1, 3:34 PM CDT | Special Weather Statement | JAN | Carroll | 41 min |
| Sep 1, 4:02 PM CDT | Special Weather Statement | JAN | Carroll, Holmes | 43 min |
| Sep 1, 4:20 PM CDT | Severe Thunderstorm Warning | JAN | Kemper, Noxubee | 40 min |
| Sep 1, 4:35 PM CDT | Severe Thunderstorm Warning | JAN | Attala, Carroll, Holmes, Leake, Madison, Yazoo | 40 min |
| Sep 1, 4:42 PM CDT | Severe Thunderstorm Warning | JAN | Attala, Kemper, Lauderdale, Leake, Neshoba, Newton and 1 more | 48 min |
| Sep 1, 5:00 PM CDT | Severe Thunderstorm Warning | JAN | Kemper | 45 min |
| Sep 1, 5:04 PM CDT | Severe Thunderstorm Warning | JAN | Holmes, Humphreys, Yazoo | 41 min |
| Sep 1, 5:07 PM CDT | Severe Thunderstorm Warning | JAN | Leake, Madison, Rankin, Scott, Yazoo | 68 min |
| Sep 1, 5:19 PM CDT | Severe Thunderstorm Warning | JAN | Clarke, Jasper, Lauderdale, Newton | 56 min |
| Sep 1, 5:34 PM CDT | Severe Thunderstorm Warning | JAN | Kemper, Lauderdale, Leake, Neshoba, Newton | 34 min |
| Sep 1, 5:45 PM CDT | Severe Thunderstorm Warning | JAN | Madison, Yazoo | 60 min |
| Sep 1, 6:05 PM CDT | Special Weather Statement | JAN | Clarke, Jasper, Rankin, Scott, Simpson, Smith | 55 min |
| Sep 1, 6:14 PM CDT | Severe Thunderstorm Warning | JAN | Hinds, Madison, Rankin, Simpson | 76 min |
| Sep 1, 6:15 PM CDT | Severe Thunderstorm Warning | JAN | Clarke, Jasper, Lauderdale, Newton | 60 min |
| Sep 1, 6:37 PM CDT | Severe Thunderstorm Warning | JAN | Clarke, Jasper, Simpson, Smith | 53 min |
| Sep 1, 5:01 PM CDT | Special Weather Statement | JAN | Ashley | 44 min |
Nearby
Heat Advisories in Mississippi, 2021Heat Advisories in Louisiana, 2021Heat Advisories in Arkansas, 2021Every heat advisory in 2021
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.