A short wave moved across the region during the 20th. Scattered storms occurred ahead of the disturbance with an isolated storm becoming severe.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS LCH wrote it up.
A short wave moved across the region during the 20th. Scattered storms occurred ahead of the disturbance with an isolated storm becoming severe.
The local office's own words before the first event, 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 the first event at Feb 20, 11:55 AM CST, 2 hours 50 minutes earlier.
Area Forecast Discussion National Weather Service Lake Charles LA 1155 AM CST Mon Feb 20 2017 .DISCUSSION... 20/18Z TAF Issuance. && .AVIATION... A mix of MVFR/VFR cigs acrs the area this morning with an area of rain spreading east into SE TX. The leading band of convection is now approaching BPT where prevailing SHRA and isltd TS expected through early evening. The area of rain will spread slowly east today reaching LCH by 21Z, AEX by 22Z and further east toward LFT/ARA by 00Z. Through the aftn, isltd TS will be possible with the lead band as it moves east, with TS potential diminishing this evening with decreasing instability/loss of heating. Prevailing cigs will lower to MVFR as the rain shield moves east with periodically lower cigs/vsbys in heavier SHRA. SEly winds around 10 kt will weaken and become VRB this evening through Tuesday morning. SHRA will decrease from west to east late this evening through Tuesday morning, with IFR conditions in low cigs/fog lingering in its wake. 24 && .PREV DISCUSSION... /issued 1045 AM CST Mon Feb 20 2017/ DISCUSSION... Regional 88Ds show the expected rainfall event playing out as expected with a large area of precipitation beginning to make its way into our far wrn zones. Convection had been on the wane the previous couple of hours but is showing signs of recovery last half-hour or so with multiple cells popping up along the leading edge of the band. Previous forecast was in good shape with just minor tweaks to POPs. Although rain looks to be heavy at times, still not expecting flooding issues so not planning any flood watch issuances at this time. Elsewhere, inherited grids/zones look good as is based on latest obs/trends. 25 PREV DISCUSSION... /issued 524 AM CST Mon Feb 20 2017/ DISCUSSION... 12z taf issuance. AVIATION... MVFR to IFR ceilings this morning ahead of the area of TSRA over SE TX. This area of TSRA will slowly spread/develop eastward over SE TX later this morning, and into LA this afternoon and evening, showing this progression in the terminals. SHRA/TSRA expected to end from west to east between 06-12z TUE. DML PREV DISCUSSION... /issued 434 AM CST Mon Feb 20 2017/ DISCUSSION...Low level jet at 850 mb of 30-40 kts has now overspread the area ahead of a vigorous and sharp mid/upper level trof advancing east across west Texas. Feature will be the focus of a very unsettled weather pattern over the next 24 hours. Aforementioned jet among other things acting to mitigate any inland fog development this morning. Have seen a continuation of sea fog over the near shore waters and have a dense fog advisory out until 9 AM. Rains will eventually end this issue as the day progresses. Regional radar depicting a couple of lines of active convection at this time over east Texas. More eastern line appears focused along axis of strong warm advection in conjunction with low level jet maxima. Line further to the west more in line with surface trof and associated low level convergence. East Texas rains will be spreading west to east across the forecast area through today and tonight. Deep moisture on a strong southerly flow through the column will be transported over the region with precipitable water values maxing out near record levels aided by the unusual mid-February warmth. Expecting much of the area to see 1.5-2.5 inches. Have maintained locally heavy rainfall possible wording in forecast. Weather prediction center has the forecast area within a marginal risk of flooding rains. Rain chances then diminish Tuesday as the mid/upper low advances across south Louisiana then dips southeast into the north- central gulf. A dry weather pattern then is ahead through the remainder of the week. A dry frontal passage is on tap for late Friday into early Saturday bringing somewhat cooler temperatures for the weekend. MARINE...Dense fog will remain into this morning as a long fetch of relative warm and moist southeasterlies advance over the cooler shelf waters of the northwest gulf. widespread shower and thunderstorm activity is expected today, lessening Tuesday as low pressure advances east through Texas and into the gulf waters. a brief northerly flow will develop in the wake of the low for Tuesday, returning to onshore Wednesday and holding until our next frontal passage expected late Friday into early Saturday. 23 && .PRELIMINARY POINT TEMPS/POPS... AEX 76 59 72 56 / 60 80 40 10 LCH 75 60 73 58 / 80 80 40 10 LFT 76 62 73 58 / 50 80 50 20 BPT 73 60 74 58 / 90 80 30 10 && .LCH WATCHES/WARNINGS/ADVISORIES... LA...None. TX...None. GM...None. &&
Hazardous Weather Outlook National Weather Service Lake Charles LA 500 AM CST Mon Feb 20 2017 LAZ027>033-041>045-052>055-073-074-TXZ180-201-215-216-259>262- 211100- 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- 500 AM CST Mon Feb 20 2017 This Hazardous Weather Outlook is for portions of central Louisiana, south central Louisiana, southwest Louisiana, west central Louisiana, and southeast Texas. .DAY ONE...Today and Tonight Showers and thunderstorms are ahead as a vigorous low pressure system advances across Texas then south Louisiana. Widespread and heavy rains will be possible and expecting 1.5-2.5 inch rainfall totals common across the area. Locally heavier rainfall will also be possible. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Significant weather is not expected. .SPOTTER INFORMATION STATEMENT... Spotter activation will likely not be required. GMZ430-432-435-450-452-455-470-472-475-211100- 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- 500 AM CST Mon Feb 20 2017 This Hazardous Weather Outlook is for portions of Gulf of Mexico. .DAY ONE...Today and Tonight A dense fog advisory is in effect for the near shore waters through 9 AM. Widespread showers and thunderstorms will advance across the northwest gulf associated with a vigorous low approaching the region. Rains and a returning offshore flow will keep any additional fog development in check through mid- week. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday No significant weather is expected. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be required.
Special Weather Statement
National Weather Service Lake Charles LA
141 PM CST MON FEB 20 2017
LAZ030-031-041-042-073-074-202030-
West Cameron LA-Calcasieu LA-Jefferson Davis LA-Allen LA-
Beauregard LA-East Cameron LA-
141 PM CST MON FEB 20 2017
...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL CAMERON...WESTERN
JEFFERSON DAVIS...EASTERN BEAUREGARD...CENTRAL CALCASIEU AND
SOUTHWESTERN ALLEN PARISHES UNTIL 230 PM CST...
At 141 PM CST, Doppler radar was tracking strong thunderstorms along
a line extending from Singer to near Sulphur to near Grand Lake.
Movement was east at 20 mph.
Winds in excess of 40 mph will be possible with these storms.
Locations impacted include...
Lake Charles, Sulphur, Westlake, Iowa, Reeves, Dry Creek, Grand Lake,
Singer, Moss Bluff, De Quincy, Ragley, Lake Charles Regional Airport,
Dequincy, Topsy, Lebleu Settlement, Gillis, Oretta, Carlyss,
Longville and Buller.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3024 9341 3068 9350 3085 9305 3038 9296
3005 9293 3000 9327 3002 9327 3004 9328
3005 9328 3005 9333 2999 9334 2998 9339
TIME...MOT...LOC 1941Z 250DEG 17KT 3064 9341 3027 9334 3008 9332
24Special Weather Statement
National Weather Service Lake Charles LA
230 PM CST MON FEB 20 2017
LAZ027-028-030-031-041-042-074-202115-
Calcasieu LA-Jefferson Davis LA-Allen LA-Vernon LA-Beauregard LA-
Rapides LA-East Cameron LA-
230 PM CST MON FEB 20 2017
...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN CAMERON...WESTERN
RAPIDES...JEFFERSON DAVIS...NORTHEASTERN BEAUREGARD...SOUTHEASTERN
CALCASIEU...EASTERN VERNON AND ALLEN PARISHES UNTIL 315 PM CST...
At 230 PM CST, Doppler radar was tracking strong thunderstorms along
a line extending from near Slagle to Reeves to near Grand Chenier.
Movement was northeast at 15 mph.
Winds in excess of 40 mph will be possible with these storms.
Locations impacted include...
Jennings, Leesville, Welsh, Iowa, Lake Arthur, Kinder, Oberlin,
Elton, Elizabeth, Fenton, Reeves, Dry Creek, Rockefeller Wildlife
Range, Fort Polk, Hayes, Sugartown, Slagle, Lacassine National
Wildlife Refuge, Hineston and Grand Chenier.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3140 9275 3061 9267 3007 9266 3004 9272
3004 9266 2967 9265 2969 9292 2975 9308
3047 9310 3124 9326
TIME...MOT...LOC 2030Z 246DEG 13KT 3120 9317 3051 9303 2973 9302
24The Lake Charles radar (KLCH), 52 km away, was scanning. The volume nearest the first event began at 20:44 UTC.
1 thunderstorm wind. Local standard time, as filed.
A report from local HAM radio operators indicated several trees down along Potter Road.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Louisiana in 2017Every state in 2017This day in weather historyWarnings in Louisiana, February 2017
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 680774.