Alert archive / Louisiana / Heat Advisories in 2011
Heat Advisory 10, NWS Lake Charles, LA
NWS Lake Charles, LA issued this heat advisory at Aug 19, 2011, 4:31 AM CDT for 9 parishes in Louisiana; 4 counties in Texas. It took effect at Aug 19, 2011, 12:00 PM CDT. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- Aug 19, 2011, 4:31 AM CDT (09:31 UTC)
- In effect from
- Aug 19, 2011, 12:00 PM CDT
- Expired
- Aug 19, 2011, 6:00 PM CDT
- In force
- 6 hr
- Issued by
- NWS Lake Charles, LA
Counties Allen Parish, LA, Avoyelles Parish, LA, Beauregard Parish, LA, Evangeline Parish, LA, Lafayette Parish, LA, Rapides Parish, LA, Saint Landry Parish, LA, Saint Martin Parish, LA, Vernon Parish, LA, Hardin County, TX, Jasper County, TX, Newton County, TX, Tyler County, TX
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 00:00Z, 9.5 hours before the alert went out and 67 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
- 3729 J/kg
- Mixed-layer CIN
- -60 J/kg
- Mixed-layer LCL
- 1392 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 55 m²/s²
- 0-3 km storm-relative helicity
- 143 m²/s²
- Significant tornado parameter
- 1.0
- Supercell composite
- 12.3
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 Lake Charles, LA wrote its last area forecast discussion before this heat advisory went out at Aug 19, 4:15 AM CDT, 16 minutes earlier.
Area forecast discussion, Aug 19, 4:15 AM CDT, 16 minutes before
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</html>Hazardous weather outlook, Aug 18, 4:48 AM CDT, 23 hours 43 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LAKE CHARLES LA 448 AM CDT THU AUG 18 2011 GMZ430-432-435-450-452-455-470-472-475-LAZ027>033-041>045-051>055- TXZ180-201-215-216-259>262-191000- SABINE LAKE-CALCASIEU LAKE-VERMILION BAY- COASTAL WATERS FROM CAMERON LA TO HIGH ISLAND TX OUT 20 NM- COASTAL WATERS FROM INTRACOASTAL CITY TO CAMERON LA OUT 20 NM- COASTAL WATERS FROM LOWER ATCHAFALAYA RIVER TO INTRACOASTAL CITY LA OUT 20 NM- WATERS FROM CAMERON LA TO HIGH ISLAND TX FROM 20 TO 60 NM- WATERS FROM INTRACOASTAL CITY TO CAMERON LA FROM 20 TO 60 NM- WATERS FROM LOWER ATCHAFALAYA RIVER TO INTRACOASTAL CITY LA FROM 20 TO 60 NM-VERNON-RAPIDES-AVOYELLES-BEAUREGARD-ALLEN-EVANGELINE- ST. LANDRY-CALCASIEU-JEFFERSON DAVIS-ACADIA-LAFAYETTE- UPPER ST. MARTIN-CAMERON-VERMILION-IBERIA-ST. MARY- LOWER ST. MARTIN-TYLER-HARDIN-JEFFERSON-ORANGE-NORTHERN JASPER- NORTHERN NEWTON-SOUTHERN JASPER-SOUTHERN NEWTON- 448 AM CDT THU AUG 18 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF THE NORTHWEST GULF OF MEXICO...LA...CENTRAL LOUISIANA...SOUTH CENTRAL LOUISIANA...SOUTHWEST LOUISIANA...WEST CENTRAL LOUISIANA... SOUTHEAST TEXAS AND TX. .DAY ONE...TODAY AND TONIGHT WITH HIGH TEMPERATURES IN THE UPPER 90S TO LOWER 100S AND AFTERNOON HUMIDITY VALUES OF 30 TO 40 PERCENT...HEAT INDEX VALUES ACROSS MUCH OF THE AREA WILL RANGE FROM 102 TO 107 DEGREES THIS AFTERNOON. THE MOST DANGEROUS READINGS WILL BE BETWEEN 2 PM AND 5 PM...AROUND THE TIME OF HIGH TEMPERATURES. PRECAUTIONS SHOULD BE MADE TO DELAY ANY STRENUOUS OUTDOOR ACTIVITIES TO BEFORE OF AFTER THESE HOURS. IF YOU HAVE TO WORK OUTDOORS THIS AFTERNOON...DRINK PLENTY OF NON-ALCOHOLIC LIQUIDS AND WEAR LIGHT-COLORED CLOTHING. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY HOT DAYS WILL CONTINUE THROUGH THE WEEK WITH HEAT INDICES WELL OVER 100 DEGREES ACROSS MANY LOCATIONS AWAY FROM THE COAST. RAIN CHANCES WILL BE SLIM AT BEST...WITH SHOWER AND STORM DEVELOPMENT EXPECTED MAINLY FROM MID-DAY THROUGH EARLY EVENING. SEVERE STORMS ARE NOT EXPECTED. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED. 25
In the hours before
Special weather statement, Aug 18, 10:31 PM CDT, 6 hours before
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</html>The office that day
Everything else NWS Lake Charles, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 7:05 PM CDT | Special Weather Statement | LCH | Allen, Saint Landry | 55 min |
| Aug 18, 7:10 PM CDT | Severe Thunderstorm Warning | LCH | Avoyelles, Saint Landry | 65 min |
| Aug 18, 7:50 PM CDT | Special Marine Warning | LCH | 55 min | |
| Aug 18, 7:59 PM CDT | Special Weather Statement | LCH | Beauregard, Calcasieu | 61 min |
| Aug 18, 8:07 PM CDT | Special Weather Statement | LCH | Acadia, Jefferson Davis, Lafayette, Saint Landry | 53 min |
| Aug 18, 8:19 PM CDT | Severe Thunderstorm Warning | LCH | Acadia, Allen, Evangeline, Iberia, Jefferson Davis, Lafayette and 3 more | 56 min |
| Aug 18, 9:16 PM CDT | Severe Thunderstorm Warning | LCH | Acadia, Cameron, Iberia, Jefferson Davis, Lafayette, Saint Martin and 2 more | 59 min |
| Aug 18, 9:35 PM CDT | Special Weather Statement | LCH | Beauregard | 55 min |
| Aug 18, 10:09 PM CDT | Special Weather Statement | LCH | Calcasieu | 66 min |
| Aug 18, 10:16 PM CDT | Special Marine Warning | LCH | 59 min | |
| Aug 18, 10:31 PM CDT | Special Weather Statement | LCH | Cameron | 59 min |
| Aug 18, 10:46 PM CDT | Special Marine Warning | LCH | 59 min | |
| Aug 18, 10:52 PM CDT | Special Weather Statement | LCH | Cameron | 53 min |
| Aug 18, 11:12 PM CDT | Special Marine Warning | LCH | 63 min | |
| Aug 18, 11:31 PM CDT | Special Marine Warning | LCH | 59 min |
Nearby
Heat Advisories in Louisiana, 2011Heat Advisories in Texas, 2011Every heat advisory in 2011
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.