Alert archive / Louisiana / Special Weather Statements in 2021
Special Weather Statement, NWS Lake Charles, LA
NWS Lake Charles, LA issued this special weather statement at Jul 31, 2021, 4:33 PM CDT for Saint Martin Parish, Louisiana. It was in force for 42 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 31, 2021, 4:33 PM CDT (21:33 UTC)
- Expired
- Jul 31, 2021, 5:15 PM CDT
- In force
- 42 min
- Issued by
- NWS Lake Charles, LA
County Saint Martin Parish, LA
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 12:00Z, 9.6 hours before the alert went out and 150 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
- 2274 J/kg
- Mixed-layer CIN
- -17 J/kg
- Mixed-layer LCL
- 811 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- -21 m²/s²
- 0-3 km storm-relative helicity
- -15 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement 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 special weather statement went out at Jul 31, 3:57 PM CDT, 36 minutes earlier.
Area forecast discussion, Jul 31, 3:57 PM CDT, 36 minutes before
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</html>Hazardous weather outlook, Jul 31, 3:52 PM CDT, 41 minutes before
Hazardous Weather Outlook National Weather Service Lake Charles LA 352 PM CDT Sat Jul 31 2021 LAZ027-030>032-041>045-052>055-073-074-TXZ180-201-215-216-259>262- 012100- Vernon-Beauregard-Allen-Evangeline-Calcasieu-Jefferson Davis-Acadia- Lafayette-Upper St. Martin-Vermilion-Iberia-St. Mary- Lower St. Martin-West Cameron-East Cameron-Tyler-Hardin-Jefferson- Orange-Northern Jasper-Northern Newton-Southern Jasper- Southern Newton- 352 PM CDT Sat Jul 31 2021 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING... This Hazardous Weather Outlook is for central Louisiana, south central Louisiana, southwest Louisiana, west central Louisiana and southeast Texas. .DAY ONE...Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. Isolated showers and thunderstorms are possible this afternoon, mainly along and south of the I-10 corridor. No severe thunderstorms are expected at this time. .DAYS TWO THROUGH SEVEN...Sunday through Friday. Hot and humid conditions are expected again on Sunday, with peak heat index values ranging from 105 to 110 degrees. Scattered showers and thunderstorms are also possible, but no severe thunderstorms are expected at this time. More widespread shower and thunderstorm activity is expected Monday and Tuesday as a weak frontal boundary slowly moves south through the area. Rain chances then decrease for the mid to latter part of the week. No severe thunderstorms are expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. LAZ028-029-033-012100- Rapides-Avoyelles-St. Landry- 352 PM CDT Sat Jul 31 2021 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING... ...HEAT ADVISORY IN EFFECT FROM 11 AM TO 7 PM CDT SUNDAY... This Hazardous Weather Outlook is for central Louisiana. .DAY ONE...Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. Isolated showers and thunderstorms are possible this afternoon, mainly along and south of the I-10 corridor. No severe thunderstorms are expected at this time. .DAYS TWO THROUGH SEVEN...Sunday through Friday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. Hot and humid conditions are expected again on Sunday, with peak heat index values ranging from 105 to 110 degrees. Scattered showers and thunderstorms are also possible, but no severe thunderstorms are expected at this time. More widespread shower and thunderstorm activity is expected Monday and Tuesday as a weak frontal boundary slowly moves south through the area. Rain chances then decrease for the mid to latter part of the week. No severe thunderstorms are expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. GMZ430-432-435-450-452-455-470-472-475-012100- 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- 352 PM CDT Sat Jul 31 2021 This Hazardous Weather Outlook is for the Gulf of Mexico and the coastal lakes and bays of the Gulf of Mexico. .DAY ONE...Tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Sunday through Friday. Scattered showers and thunderstorms are possible on Sunday, but no severe thunderstorms are expected at this time. More widespread shower and thunderstorm activity is expected Monday through Wednesday as a weak frontal boundary slowly moves south through the area. Rain chances then decrease toward the latter part of the week. No severe thunderstorms are expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
In the hours before
Special weather statement, Jul 31, 3:24 PM CDT, 1 hour 9 minutes before
Special Weather Statement
National Weather Service Lake Charles LA
324 PM CDT Sat Jul 31 2021
LAZ054-055-312100-
Lower St. Martin LA-St. Mary LA-
324 PM CDT Sat Jul 31 2021
...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL ST. MARY AND
SOUTHEASTERN ST. MARTIN PARISHES UNTIL 400 PM CDT...
At 324 PM CDT, Doppler radar was tracking a strong thunderstorm near
Patterson Memorial Airport, or near Patterson, moving west at 10 mph.
Winds in excess of 40 mph will be possible with this storm.
Locations impacted include...
Franklin, Patterson, Baldwin, Patterson Memorial Airport, Charenton
and Centerville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 2964 9131 2972 9158 2974 9162 2975 9160
2976 9162 2976 9164 2975 9163 2975 9162
2974 9163 2974 9164 2975 9166 2976 9169
2976 9170 2994 9153 2981 9125
TIME...MOT...LOC 2024Z 105DEG 9KT 2975 9137
RuaSpecial weather statement, Jul 31, 4:33 PM CDT, 0 minutes 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 |
|---|---|---|---|---|
| Jul 31, 3:24 PM CDT | Special Weather Statement | LCH | St. Mary | 36 min |
| Jul 31, 3:53 PM CDT | Heat Advisory | LCH | Allen, Avoyelles, Beauregard, Cameron, Evangeline, Lafayette and 4 more | 27 hr |
| Jul 31, 6:16 PM CDT | Special Weather Statement | LCH | Lafayette | 44 min |
Nearby
Special Weather Statements in Louisiana, 2021Every special weather statement 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.