Alert archive / Louisiana / Special Weather Statements in 2021

Special Weather Statement, NWS Lake Charles, LA

June 22, 2021St. Mary Parish, Louisiana

NWS Lake Charles, LA issued this special weather statement at Jun 22, 2021, 12:28 PM CDT for St. Mary Parish, Louisiana. It was in force for 47 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
Jun 22, 2021, 12:28 PM CDT (17:28 UTC)
Expired
Jun 22, 2021, 1:15 PM CDT
In force
47 min
Issued by
NWS Lake Charles, LA

County St. Mary Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 5.5 hours before the alert went out and 191 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, Slidell Radar S, LA at 12:00Z on 2021-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 962 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 12:00Z on 2021-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 51 square meters per square second.1939Sfc1 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
962 J/kg
Mixed-layer CIN
-19 J/kg
Mixed-layer LCL
812 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
51 m²/s²
0-3 km storm-relative helicity
62 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0

Open this sounding in Storm Lab

The text

As transmitted.

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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 Jun 22, 12:09 PM CDT, 19 minutes earlier.

Area forecast discussion, Jun 22, 12:09 PM CDT, 19 minutes before
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Hazardous weather outlook, Jun 22, 4:09 AM CDT, 8 hours 19 minutes before
Hazardous Weather Outlook
National Weather Service Lake Charles LA
409 AM CDT Tue Jun 22 2021

LAZ027>033-041>045-052>055-073-074-TXZ180-201-215-216-259>262-230915-
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-
409 AM CDT Tue Jun 22 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.

Scattered showers and thunderstorms will be expected to persist over
the area this morning and thru the rest of the day. An arriving
front from the north will lead to high chances for thunderstorms in
the early morning on Tuesday.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Scattered to widespread showers and thunderstorms will develop along
a decaying frontal boundary Tuesday and Wednesday. Additional rounds
of scattered showers and thunderstorms will develop each afternoon
Thursday through Saturday with the highest probabilities across
southwest and south central Louisiana. While widespread severe
weather is not expected, some of these storms will have the
potential
to produce gusty winds, torrential rain and frequent lightning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

GMZ430-432-435-450-452-455-470-472-475-230915-
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-
409 AM CDT Tue Jun 22 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.

Scattered showers and thunderstorms will be expected to persist over
the area into the night. An arriving front from the north will lead
to high chances for thunderstorms in the early morning on Tuesday.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Scattered to numerous showers and thunderstorms are anticipated
through Wednesday, with activity becoming more widely scattered
through the end of the week. Stronger storms will be capable of
producing locally higher winds and seas, torrential rain and
frequent lightning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Special weather statement, Jun 22, 6:57 AM CDT, 5 hours 31 minutes before
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Special weather statement, Jun 22, 10:34 AM CDT, 1 hour 54 minutes before
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Special weather statement, Jun 22, 12:28 PM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 7:14 PM CDTSpecial Weather StatementLCHEvangeline31 min
Jun 21, 7:17 PM CDTFlash Flood WarningLCHAllen, Evangeline3 hr
Jun 21, 7:59 PM CDTSpecial Weather StatementLCHAvoyelles46 min
Jun 22, 6:57 AM CDTSpecial Weather StatementLCHAllen, Jefferson Davis33 min
Jun 22, 7:39 AM CDTFlash Flood WarningLCHAcadia, Allen, Beauregard, Evangeline, Jefferson Davis, Saint Landry2 hr
Jun 22, 10:34 AM CDTSpecial Weather StatementLCHVermilion41 min
Jun 22, 3:15 PM CDTFlash Flood WarningLCHCalcasieu3 hr
Jun 22, 4:27 AM CDTSpecial Weather StatementLCHHardin48 min
Jun 22, 5:30 AM CDTSpecial Weather StatementLCHOrange30 min
Jun 22, 6:13 AM CDTSpecial Weather StatementLCHOrange47 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.