Alert archive / Louisiana / Wind Advisories in 2018

Wind Advisory 7, NWS Lake Charles, LA

April 4, 2018Cameron Parish, Lafayette Parish, Saint Martin Parish, Louisiana

NWS Lake Charles, LA issued this wind advisory at Apr 4, 2018, 9:25 AM CDT for Cameron Parish, Lafayette Parish, Saint Martin Parish, Louisiana. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued
Apr 4, 2018, 9:25 AM CDT (14:25 UTC)
Expired
Apr 4, 2018, 2:50 PM CDT
In force
5 hr
Issued by
NWS Lake Charles, LA

Counties Cameron Parish, LA, Lafayette Parish, LA, Saint Martin Parish, LA

The radar

The Lake Charles radar (KLCH), 89 km from the middle of the area, began a volume at 14:29 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, 2.4 hours before the alert went out and 88 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.

Skew-T log-pSkew-T log-p diagram, Lake Charles Mun, LA at 12:00Z on 2018-04-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lake Charles Mun, LA at 12:00Z on 2018-04-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 3 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
641 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
3 m²/s²
0-3 km storm-relative helicity
110 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

As transmitted.

061 
WWUS74 KLCH 041425
NPWLCH

URGENT - WEATHER MESSAGE
National Weather Service Lake Charles LA
925 AM CDT Wed Apr 4 2018

...WIND ADVISORY IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON...

.A strong cold front will result in strong northerly winds that 
will continue through the mid afternoon hours. Winds will diminish
as the pressure gradient relaxes and high pressure builds across
the area by late afternoon into the evening hours.

LAZ041>045-052>055-073-074-TXZ215-216-042100-
/O.NEW.KLCH.WI.Y.0007.180404T1425Z-180404T2100Z/
Calcasieu-Jefferson Davis-Acadia-Lafayette-Upper St. Martin-
Vermilion-Iberia-St. Mary-Lower St. Martin-West Cameron-
East Cameron-Jefferson-Orange-
Including the cities of Lake Charles, Sulphur, Hathaway, 
Jennings, Topsy, Roanoke, Welsh, Lake Arthur, Crowley, Rayne, 
Branch, Church Point, Richard, Lafayette, Breaux Bridge, Cade, 
St. Martinville, Abbeville, Intracoastal City, Meaux, 
Forked Island, Kaplan, New Iberia, Morgan City, Burns Point, 
Centerville, Franklin, Patterson, Berwick, Bayou Vista, 
Stephensville, Hackberry, Johnson Bayou, Grand Lake, Klondike, 
Cameron, Creole, Grand Chenier, Rutherford Beach, Beaumont, 
Sabine Pass, Sea Rim State Park, Orange, Vidor, and Bridge City
925 AM CDT Wed Apr 4 2018

...WIND ADVISORY IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON...

The National Weather Service in Lake Charles has issued a Wind
Advisory, which is in effect until 4 PM CDT this afternoon. 

* TIMING...Through 4 PM.

* WINDS...20 to 25 mph with gusts to 30 mph.

* IMPACTS...Loose lawn objects will be blown around. Travel may 
  become difficult, especially for high profile vehicles, on 
  open roadways and bridges. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory means that winds of 20 mph are expected. Winds
this strong can make driving difficult, especially for high
profile vehicles. Use extra caution.

&&

$$
1 follow-up statement
790 
WWUS74 KLCH 041950
NPWLCH

URGENT - WEATHER MESSAGE
National Weather Service Lake Charles LA
250 PM CDT Wed Apr 4 2018

...WIND ADVISORY IS CANCELLED...

.Northerly winds behind the frontal boundary have diminished this
afternoon as a surface high pressure ridge approaches from the 
north.

LAZ041>045-052>055-073-074-TXZ215-216-042100-
/O.CAN.KLCH.WI.Y.0007.000000T0000Z-180404T2100Z/
Calcasieu-Jefferson Davis-Acadia-Lafayette-Upper St. Martin-
Vermilion-Iberia-St. Mary-Lower St. Martin-West Cameron-
East Cameron-Jefferson-Orange-
Including the cities of Lake Charles, Sulphur, Hathaway, 
Jennings, Topsy, Roanoke, Welsh, Lake Arthur, Crowley, Rayne, 
Branch, Church Point, Richard, Lafayette, Breaux Bridge, Cade, 
St. Martinville, Abbeville, Intracoastal City, Meaux, 
Forked Island, Kaplan, New Iberia, Morgan City, Burns Point, 
Centerville, Franklin, Patterson, Berwick, Bayou Vista, 
Stephensville, Hackberry, Johnson Bayou, Grand Lake, Klondike, 
Cameron, Creole, Grand Chenier, Rutherford Beach, Beaumont, 
Sabine Pass, Sea Rim State Park, Orange, Vidor, and Bridge City
250 PM CDT Wed Apr 4 2018

...WIND ADVISORY IS CANCELLED...

The National Weather Service in Lake Charles has cancelled the
Wind Advisory. 

Northerly winds behind the frontal boundary have diminished this
afternoon as a surface high pressure ridge approaches from the 
north.

$$

The office that day

Everything else NWS Lake Charles, LA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 3, 7:33 PM CDTSpecial Weather StatementLCHRapides42 min
Apr 3, 7:42 PM CDTSpecial Weather StatementLCHRapides, Vernon48 min
Apr 3, 8:53 PM CDTSevere Thunderstorm WarningLCHVernon37 min
Apr 3, 9:00 PM CDTSevere Thunderstorm WarningLCHRapides, Vernon45 min
Apr 3, 9:13 PM CDTSevere Thunderstorm WarningLCHBeauregard, Vernon47 min
Apr 3, 9:30 PM CDTSevere Thunderstorm WarningLCHBeauregard, Rapides, Vernon60 min
Apr 3, 9:39 PM CDTAreal Flood AdvisoryLCHBeauregard, Vernon3 hr
Apr 3, 9:56 PM CDTSevere Thunderstorm WarningLCHAllen, Beauregard, Calcasieu, Evangeline, Jefferson Davis, Rapides and 1 more34 min
Apr 3, 10:29 PM CDTSevere Thunderstorm WarningLCHAllen, Avoyelles, Evangeline, Rapides61 min
Apr 3, 10:42 PM CDTTornado WarningLCHEvangeline12 min
Apr 3, 10:58 PM CDTSevere Thunderstorm WarningLCHAvoyelles, Evangeline, Saint Landry47 min
Apr 3, 11:21 PM CDTSpecial Weather StatementLCHAvoyelles39 min
Apr 4, 1:20 AM CDTSpecial Marine WarningLCH55 min
Apr 4, 2:13 AM CDTSpecial Marine WarningLCH92 min
Apr 4, 3:29 AM CDTSpecial Marine WarningLCH91 min
Apr 4, 5:04 AM CDTSpecial Marine WarningLCH41 min
Apr 3, 8:24 PM CDTSpecial Weather StatementLCHNewton36 min
Apr 3, 8:31 PM CDTSevere Thunderstorm WarningLCHJasper, Newton29 min

Nearby

Wind Advisories in Louisiana, 2018Wind Advisories in Texas, 2018Every wind advisory in 2018

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.