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 19, 2021, 12:53 PM CDT for Jefferson Davis Parish, Louisiana. It was in force for 37 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 19, 2021, 12:53 PM CDT (17:53 UTC)
- Expired
- Jul 19, 2021, 1:30 PM CDT
- In force
- 37 min
- Issued by
- NWS Lake Charles, LA
County Jefferson Davis Parish, LA
The radar
The Lake Charles radar (KLCH), 21 km from the middle of the area, began a volume at 17:53 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, 5.9 hours before the alert went out and 21 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
- 1953 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 832 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 14 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 19, 12:25 PM CDT, 28 minutes earlier.
Area forecast discussion, Jul 19, 12:25 PM CDT, 28 minutes before
Area Forecast Discussion National Weather Service Lake Charles LA 1225 PM CDT Mon Jul 19 2021 .AVIATION...Scattered showers and storms will remain around the region through the TAF period. This may cause intermittent lower vis and ceilings. Winds will be southwest to west today, but as a line of showers or outflow moves south winds will become more north albeit temporarily tonight. && .PREV DISCUSSION... /issued 936 AM CDT Mon Jul 19 2021/ UPDATE...Showers and storms are already developing near the coast this morning. This convection will expand through the morning and push inland. A cold front is moving into north Louisiana with an associated line of storms. This convection will move into the region this evening. Overall the forecast reasoning has not changed with a wet few days expected. PREV DISCUSSION... /issued 654 AM CDT Mon Jul 19 2021/ DISCUSSION... 12Z TAFS AVIATION... An upper level trof will dig into the area through the day resulting in scattered showers and thunderstorms this morning becoming more numerous through the afternoon and evening before abating somewhat late tonight. Visibility reducing heavy rainfall and gusty winds will be possible in the vicinity of storms. Away from storms, VFR conditions will prevail. Light southwesterly winds will prevail through the day becoming and variable overnight. Jones PREV DISCUSSION... /issued 354 AM CDT Mon Jul 19 2021/ DISCUSSION... SHORT TERM [Today through Wednesday Night] Nocturnal showers are already initializing across the coastal waters this morning and lifting inland in response to an upper level trof digging into the region from the north. Convection will continue to increase through the day as heating provides better surface lift. The trof axis will orient itself across the region by late this evening providing enough upper level support to maintain scattered to widespread convection through the night. A very similar setup will remain in place Tuesday although the axis is expected to be oriented across south central Louisiana yielding slightly higher convective coverage across this area as well as southeast Louisiana. By Wednesday, the southern portion of the trof cuts off into a closed upper low across southeast Texas and southwest Louisiana before retrograding into central Texas. This will maintain widespread convection across the region. LONG TERM [Thursday through Monday]... Very little change from the short term, very wet pattern continues with the mid to upper level elongated trough over Texas keeping instability couple with ample Gulf moisture. Thus, 60-80% chance of showers and thunderstorms expected Thursday, greatest chances in the afternoon. An upper level pattern shift is expected to begin by Friday, and especially over the weekend as the mid to upper level trough moves further westward, slowly being replaced by a mid to upper level ridge of high pressure. For Friday, shower and thunderstorm chances are lower, still in the 40-50% for the afternoon hours. For Saturday through Monday, the ridge aloft builds even stronger, suppressing precipitation chances in the 20-30% range Saturday, and less than 20% for Sunday/Monday. However, with the less cloud cover will come higher afternoon high temperatures, expecting the lower to mid 90s by Sunday and Monday. Heat index values expected to rise into the 100-105 degree range. Morning lows will be in the mid 70s. DML MARINE... Light to moderate onshore flow will prevail through the forecast period as high pressure remains stationed over the northeastern Gulf of Mexico. Scattered showers and thunderstorms are expected through Friday. Winds and seas will be higher in and near thunderstorm activity. && .PRELIMINARY POINT TEMPS/POPS... AEX 71 88 72 90 / 80 80 40 70 LCH 75 86 73 89 / 80 90 60 80 LFT 75 86 73 89 / 90 100 70 80 BPT 76 88 73 90 / 90 90 60 70 && .LCH WATCHES/WARNINGS/ADVISORIES... LA...None. TX...None. GM...None. &&
Hazardous weather outlook, Jul 19, 3:53 AM CDT, 9 hours before
Hazardous Weather Outlook National Weather Service Lake Charles LA 353 AM CDT Mon Jul 19 2021 LAZ027>033-041>045-052>055-073-074-TXZ180-201-215-216-259>262-200900- Vernon-Rapides-Avoyelles-Beauregard-Allen-Evangeline-St. Landry- 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- 353 AM CDT Mon Jul 19 2021 This Hazardous Weather Outlook is for central Louisiana, south central Louisiana, southwest Louisiana, west central Louisiana and southeast Texas. .DAY ONE...Today and tonight. Isolated showers and thunderstorms early this morning will become numerous this afternoon and continue into tonight. Widespread severe weather is not expected. However, some storms will have the potential to produce gusty winds, frequent lightning and periods of torrential rainfall. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Scattered to numerous showers and thunderstorms are expected through Friday with storms becoming more isolated by next weekend. Widespread severe weather is not expected. However, some storms will have the potential to produce gusty winds, frequent lightning and periods of torrential rainfall. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. GMZ430-432-435-450-452-455-470-472-475-200900- 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- 353 AM CDT Mon Jul 19 2021 This Hazardous Weather Outlook is for the Gulf of Mexico and the coastal lakes and bays of the Gulf of Mexico. .DAY ONE...Today and tonight. Isolated showers and thunderstorms early this morning will become scattered this afternoon and continue into tonight. Widespread severe weather is not expected. However, some storms will have the potential to produce gusty winds, locally higher seas and frequent lightning. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Scattered to at times numerous showers and thunderstorms are expected through the forecast period. Winds and seas will be higher near thunderstorm activity. Widespread severe weather is not expected. However, some storms will have the potential to produce gusty winds, locally higher seas and frequent lightning. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
In the hours before
Special weather statement, Jul 19, 12:53 PM CDT, 0 minutes before
Special Weather Statement National Weather Service Lake Charles LA 1253 PM CDT Mon Jul 19 2021 LAZ041-042-191830- Calcasieu LA-Jefferson Davis LA- 1253 PM CDT Mon Jul 19 2021 ...SPECIAL WEATHER STATEMENT... At 1252 PM CDT, Doppler radar was tracking a strong thunderstorm over Lebleu Settlement, or near Moss Bluff, moving east at 15 mph. Winds in excess of 30 mph will be possible with this storm. Locations impacted include... Iowa, Moss Bluff, Buller and Lebleu Settlement. This includes Interstate 10 in Louisiana between mile markers 35 and 47. 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 3020 9314 3034 9319 3041 9296 3021 9294 TIME...MOT...LOC 1752Z 264DEG 14KT 3029 9313 Warthen
The office that day
Everything else NWS Lake Charles, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 19, 1:38 PM CDT | Special Weather Statement | LCH | Avoyelles | 37 min |
| Jul 19, 2:04 PM CDT | Special Weather Statement | LCH | Evangeline | 26 min |
| Jul 19, 2:33 PM CDT | Special Weather Statement | LCH | Lafayette | 27 min |
| Jul 19, 2:56 PM CDT | Special Weather Statement | LCH | Saint Landry | 34 min |
| Jul 19, 3:34 PM CDT | Special Weather Statement | LCH | Saint Landry | 26 min |
| Jul 19, 3:45 PM CDT | Special Weather Statement | LCH | Calcasieu | 30 min |
| Jul 19, 4:20 PM CDT | Special Weather Statement | LCH | Beauregard | 55 min |
| Jul 19, 4:33 PM CDT | Special Weather Statement | LCH | Calcasieu | 27 min |
| Jul 19, 4:35 PM CDT | Special Marine Warning | LCH | 25 min | |
| Jul 19, 6:52 PM CDT | Special Weather Statement | LCH | Lafayette | 53 min |
| Jul 19, 3:03 PM CDT | Special Weather Statement | LCH | Orange | 27 min |
| Jul 19, 3:29 PM CDT | Special Weather Statement | LCH | Orange | 31 min |
| Jul 19, 3:52 PM CDT | Special Weather Statement | LCH | Newton | 23 min |
| Jul 19, 6:05 PM CDT | Special Weather Statement | LCH | Jefferson | 25 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; radar from the NEXRAD Level II archive.