Alert archive / Louisiana / Heat Advisories in 2005
Heat Advisory 7, NWS Jackson, MS
NWS Jackson, MS issued this heat advisory at Aug 23, 2005, 3:59 PM CDT for 6 counties in Mississippi; 9 parishes in Louisiana; Ashley County, Chicot County, Arkansas. It took effect at Aug 24, 2005, 10:00 AM CDT. It was in force for 9 hr.
The area
The counties it named.
The facts
- Issued
- Aug 23, 2005, 3:59 PM CDT (20:59 UTC)
- In effect from
- Aug 24, 2005, 10:00 AM CDT
- Expired
- Aug 24, 2005, 7:08 PM CDT
- In force
- 9 hr
- Issued by
- NWS Jackson, MS
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, Humphreys County, MS, Issaquena County, MS, Sharkey County, MS, Warren County, MS, Washington County, MS, Yazoo County, MS
The radar
The Jackson/Brandon,MS radar (KDGX), 125 km from the middle of the area, began a volume at 20:58 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
Little Rock, AR (KLZK), launched 12:00Z, 9.0 hours before the alert went out and 278 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
- 1261 J/kg
- Mixed-layer CIN
- -80 J/kg
- Mixed-layer LCL
- 1115 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 111 m²/s²
- 0-3 km storm-relative helicity
- 167 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 3.3
What forecasters said that day
The local office's own words before this heat advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Jackson, MS wrote its last area forecast discussion before this heat advisory went out at Aug 23, 3:13 PM CDT, 46 minutes earlier.
Area forecast discussion, Aug 23, 3:13 PM CDT, 46 minutes before
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</html>Hazardous weather outlook, Aug 23, 3:09 PM CDT, 50 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE JACKSON MS 309 PM CDT TUE AUG 23 2005 ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074- 242009- ADAMS-ASHLEY-ATTALA-BOLIVAR-CARROLL-CATAHOULA-CHICOT-CHOCTAW- CLAIBORNE-CLARKE-CLAY-CONCORDIA-COPIAH-COVINGTON-EAST CARROLL- FORREST-FRANKLIN LA-FRANKLIN MS-GRENADA-HINDS-HOLMES-HUMPHREYS- ISSAQUENA-JASPER-JEFFERSON-JEFFERSON DAVIS-JONES-KEMPER-LAMAR- LAUDERDALE-LAWRENCE-LEAKE-LEFLORE-LINCOLN-LOWNDES-MADISON LA- MADISON MS-MARION-MONTGOMERY-MOREHOUSE-NESHOBA-NEWTON-NOXUBEE- OKTIBBEHA-RANKIN-RICHLAND-SCOTT-SHARKEY-SIMPSON-SMITH-SUNFLOWER- TENSAS-WARREN-WASHINGTON-WEBSTER-WEST CARROLL-WINSTON-YAZOO- 309 PM CDT TUE AUG 23 2005 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL MISSISSIPPI... NORTHEAST LOUISIANA...AND EXTREME SOUTHEAST ARKANSAS .DAY ONE...TONIGHT AND WEDNESDAY... ...THUNDERSTORMS... ISOLATED SEVERE THUNDERSTORMS WILL BE POSSIBLE THIS AFTERNOON AND EARLY EVENING OVER NORTH AND EAST CENTRAL PORTIONS OF MISSISSIPPI AND SOUTHEAST ARKANSAS...MAINLY ALONG AND NORTH IF HIGHWAY 82. A WEAK FRONTAL ZONE REMAINS OVER THE LOWER MISSISSIPPI VALLEY REGION THIS AFTERNOON. A SERIES OF WEAK UPPER LEVEL DISTURBANCES MOVING ALONG THE FRONTAL ZONE WILL HELP INITIATE THUNDERSTORM ACTIVITY TODAY...AND THESE STORMS MAY BECOME ORGANIZED AS THEY MOVE INTO NORTH CENTRAL MISSISSIPPI LATER THIS AFTERNOON. DAYTIME HEATING WILL CONTRIBUTE TO A VERY UNSTABLE ENVIRONMENT FAVORABLE FOR SEVERE THUNDERSTORMS WITH DAMAGING WIND GUSTS UP TO 60 MPH AND PENNY SIZE HAIL. FARTHER SOUTH AND WEST...SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP BY EARLY AFTERNOON. THEY COULD BECOME STRONG WITH THE POTENTIAL TO PRODUCE 40 TO 50 MPH WIND GUSTS AND SMALL HAIL. THUNDERSTORMS ARE EXPECTED TO DISSIPATE DURING THE LATE EVENING. ...SEASONAL THREATS... THE COMBINATION OF HIGH HEAT AND HUMIDITY WILL RESULT IN AFTERNOON HEAT INDEX VALUES NEAR OR ABOVE 105 OVER MOST OF THE OUTLOOK AREA TODAY AND TOMORROW AFTERNOON. THE HOTTEST WEATHER IS EXPECTED ALONG AND WEST OF A LINE FROM FERRIDAY LOUISIANA TO YAZOO CITY AND GREENVILLE MISSISSIPPI WHERE A HEAT ADVISORY IS IN EFFECT. .DAYS TWO THROUGH SEVEN...WEDNESDAY NIGHT THROUGH TUESDAY... NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER CALL TO ACTION STATEMENT... THE ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS...AND EMERGENCY MANAGEMENT PERSONNEL...IN SUPPORT OF SEVERE WEATHER OPERATIONS IS NOT ANTICIPATED THROUGH NEXT TUESDAY. FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE AT WWW.SRH.NOAA.GOV/JAN. THIS INCLUDES THE GRAPHICAL HAZARDOUS WEATHER OUTLOOK.
In the hours before
Local storm report, Aug 23, 12:15 PM CDT, 3 hours 44 minutes before
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</html>The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 22, 7:29 PM CDT | Severe Thunderstorm Warning | JAN | Jasper | 41 min |
| Aug 23, 3:50 AM CDT | Heat Advisory | JAN | Humphreys, Issaquena, Sharkey, Warren, Washington, Yazoo | 15 hr |
| Aug 23, 5:27 PM CDT | Severe Thunderstorm Warning | JAN | Clay, Lowndes | 63 min |
| Aug 23, 6:18 PM CDT | Severe Thunderstorm Warning | JAN | Sunflower | 57 min |
| Aug 23, 6:29 PM CDT | Severe Thunderstorm Warning | JAN | Bolivar | 43 min |
| Aug 23, 6:47 PM CDT | Flash Flood Warning | JAN | Bolivar, Sunflower, Washington | 118 min |
Nearby
Heat Advisories in Louisiana, 2005Heat Advisories in Mississippi, 2005Heat Advisories in Arkansas, 2005Every heat advisory in 2005
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.