Alert archive / Louisiana / Red Flag Warnings in 2023
Red Flag Warning 1, NWS Shreveport, LA
NWS Shreveport, LA issued this red flag warning at Aug 20, 2023, 1:46 PM CDT for 11 counties in Texas; 17 parishes in Louisiana. It took effect at Aug 21, 2023, 7:00 AM CDT. It was in force for 7 days. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 20, 2023, 1:46 PM CDT (18:46 UTC)
- In effect from
- Aug 21, 2023, 7:00 AM CDT
- Expired
- Aug 27, 2023, 8:00 PM CDT
- In force
- 7 days
- Issued by
- NWS Shreveport, LA
All 28 counties
Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Caldwell Parish, LA, Claiborne Parish, LA, De Soto Parish, LA, Grant Parish, LA, Jackson Parish, LA, LaSalle Parish, LA, Lincoln Parish, LA, Natchitoches Parish, LA, Ouachita Parish, LA, Red River Parish, LA, Sabine Parish, LA, Union Parish, LA, Webster Parish, LA, Winn Parish, LA, Angelina County, TX, Cherokee County, TX, Gregg County, TX, Harrison County, TX, Nacogdoches County, TX, Panola County, TX, Rusk County, TX, Sabine County, TX, San Augustine County, TX, Shelby County, TX, Smith County, TX
The radar
The Shreveport radar (KSHV), 46 km from the middle of the area, began a volume at 18:49 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
Lake Charles Mun, LA (KLCH), launched 12:00Z, 6.8 hours before the alert went out and 224 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
- 1251 J/kg
- Mixed-layer CIN
- -284 J/kg
- Mixed-layer LCL
- 1655 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 9 m²/s²
- 0-3 km storm-relative helicity
- 112 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.7
What forecasters said that day
The local office's own words before this red flag warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Shreveport, LA wrote its last area forecast discussion before this red flag warning went out at Aug 20, 12:31 PM CDT, 1 hour 15 minutes earlier.
Area forecast discussion, Aug 20, 12:31 PM CDT, 1 hour 15 minutes before
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</html>Hazardous weather outlook, Aug 20, 5:00 AM CDT, 8 hours 46 minutes before
Hazardous Weather Outlook National Weather Service Shreveport LA 500 AM CDT Sun Aug 20 2023 ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-TXZ096- 097-108>112-124>126-136>138-149>153-165>167-211000- Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette- Columbia-Union-Caddo-Bossier-Webster-Claiborne-Lincoln-De Soto- Red River-Bienville-Jackson-Ouachita-Sabine-Natchitoches-Winn-Grant- Caldwell-La Salle-McCurtain-Bowie-Franklin-Titus-Camp-Morris-Cass- Wood-Upshur-Marion-Smith-Gregg-Harrison-Cherokee-Rusk-Panola- Nacogdoches-Shelby-Angelina-San Augustine- 500 AM CDT Sun Aug 20 2023 ...EXCESSIVE HEAT WARNING IN EFFECT UNTIL 9 PM CDT MONDAY... This Hazardous Weather Outlook is for south central Arkansas, southwest Arkansas, north central Louisiana, northwest Louisiana, southeast Oklahoma, east Texas and northeast Texas. .DAY ONE...Today and tonight. An elevated fire danger threat will persist today across much of the region due to low relative humidity and critically to extremely dry conditions. Very hot temperatures well into the triple digits will also combine with the humidity to maintain Excessive Heat Warnings across the entire region as heat indices exceed 110 degrees during peak heating hours. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Excessive heat hazards are expected to continue through next week as triple-digit temperatures show no signs of relenting. Increasingly dry conditions will maintain a risk of wildfires across the region, with extended periods of increased fire weather messaging likely as well. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. 19
Nearby
Red Flag Warnings in Louisiana, 2023Red Flag Warnings in Texas, 2023Every red flag warning in 2023
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.