Alert archive / Louisiana / Heat Advisories in 2016
Heat Advisory 9, NWS Shreveport, LA
NWS Shreveport, LA issued this heat advisory at Aug 12, 2016, 3:22 AM CDT for Angelina County, Sabine County, San Augustine County, Texas; 5 parishes in Louisiana; 5 counties in Arkansas. It was in force for 16 hr.
The area
The counties it named.
The facts
- Issued
- Aug 12, 2016, 3:22 AM CDT (08:22 UTC)
- Expired
- Aug 12, 2016, 7:00 PM CDT
- In force
- 16 hr
- Issued by
- NWS Shreveport, LA
Counties Columbia County, AR, Hempstead County, AR, Lafayette County, AR, Nevada County, AR, Union County, AR, Bienville Parish, LA, Claiborne Parish, LA, Red River Parish, LA, Sabine Parish, LA, Webster Parish, LA, Angelina County, TX, Sabine County, TX, San Augustine County, TX
The radar
The Shreveport radar (KSHV), 34 km from the middle of the area, began a volume at 08:26 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 00:00Z, 8.4 hours before the alert went out and 267 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
- 3805 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 742 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 71 m²/s²
- 0-3 km storm-relative helicity
- 78 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Shreveport, LA wrote its last area forecast discussion before this heat advisory went out at Aug 12, 2:57 AM CDT, 25 minutes earlier.
Area forecast discussion, Aug 12, 2:57 AM CDT, 25 minutes before
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</html>Hazardous weather outlook, Aug 11, 11:44 AM CDT, 15 hours 38 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SHREVEPORT LA 1144 AM CDT THU AUG 11 2016 ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077- TXZ096-097-108>112-124>126-136>138-149>153-165>167-121645- 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- 1144 AM CDT THU AUG 11 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL ARKANSAS...SOUTHWEST ARKANSAS...NORTH CENTRAL LOUISIANA... NORTHWEST LOUISIANA...SOUTHEAST OKLAHOMA...EAST TEXAS AND NORTHEAST TEXAS. .DAY ONE...THIS AFTERNOON AND TONIGHT... THE COMBINATION OF HOT TEMPERATURES AND ELEVATED RELATIVE HUMIDITY VALUES WILL RESULT IN HEAT INDEX VALUES FROM 105-110 DEGREES FOR MUCH OF EAST AND NORTHEAST TEXAS...SOUTHEAST OKLAHOMA...SOUTH ARKANSAS...AND PARTS OF NORTHWEST LOUISIANA. SHOWERS AND THUNDERSTORMS CAN BE EXPECTED THROUGH THE AFTERNOON...AND ANY STRONG STORMS WILL HAVE THE CAPABILITY OF PRODUCING STRONG WIND GUSTS...FREQUENT CLOUD TO GROUND LIGHTNING AND BRIEF HEAVY DOWNPOURS. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY... COOLER TEMPERATURES EXPECTED ON FRIDAY FOR MUCH OF THE REGION WITH SHOWERS AND THUNDERSTORMS BECOMING MORE NUMEROUS AND WIDESPREAD INTO THE WEEKEND AND LINGERING THROUGH MUCH OF NEXT WEEK. THIS DUE TO THE COMBINATION OF A COLD FRONT APPROACHING FROM THE NORTH AND BECOMING NEARLY STATIONARY WITH ABUNDANT GULF MOISTURE FEEDING INTO THE AREA. RAINFALL WILL BE HEAVY AT TIMES AND THE AREA WILL SEE AMOUNTS OF ONE TO THREE INCHES WITH HIGHER AMOUNTS OF FOUR TO OVER SEVEN INCHES POSSIBLE ACROSS NORTH LOUISIANA AND SOUTH ARKANSAS. .SPOTTER INFORMATION STATEMENT... ACTIVATION OF EMERGENCY MANAGEMENT PERSONNEL...AMATEUR RADIO OPERATORS...AND STORM SPOTTERS WILL NOT BE NEEDED TODAY OR TONIGHT. 05
The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 12, 1:36 PM CDT | Flash Flood Watch | SHV | Angelina, Nacogdoches, Sabine, San Augustine | 49 hr |
| Aug 12, 5:06 PM CDT | Special Weather Statement | SHV | Wood | 39 min |
| Aug 12, 4:35 PM CDT | Special Weather Statement | SHV | Bienville | 40 min |
| Aug 12, 4:42 PM CDT | Severe Thunderstorm Warning | SHV | Bienville, Bossier, Webster | 48 min |
| Aug 12, 5:11 PM CDT | Special Weather Statement | SHV | Union | 34 min |
Nearby
Heat Advisories in Louisiana, 2016Heat Advisories in Arkansas, 2016Heat Advisories in Texas, 2016Every heat advisory in 2016
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.