Alert archive / Louisiana / Special Weather Statements in 2017

Special Weather Statement, NWS Shreveport, LA

July 23, 2017Webster Parish, Louisiana

NWS Shreveport, LA issued this special weather statement at Jul 23, 2017, 5:55 PM CDT for Webster Parish, Louisiana. It was in force for 50 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 23, 2017, 5:55 PM CDT (22:55 UTC)
Expired
Jul 23, 2017, 6:45 PM CDT
In force
50 min
Issued by
NWS Shreveport, LA

County Webster Parish, LA

The radar

The Shreveport radar (KSHV), 42 km from the middle of the area, began a volume at 22:57 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 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 Shreveport, LA wrote its last area forecast discussion before this special weather statement went out at Jul 23, 4:03 PM CDT, 1 hour 52 minutes earlier.

Area forecast discussion, Jul 23, 4:03 PM CDT, 1 hour 52 minutes before
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Hazardous weather outlook, Jul 23, 11:26 AM CDT, 6 hours 29 minutes before
Hazardous Weather Outlook
National Weather Service Shreveport LA
1126 AM CDT Sun Jul 23 2017

ARZ070>073-LAZ001>006-010>014-017>022-TXZ097-108>112-124>126-
136>138-149>153-165>167-241630-
Miller-Lafayette-Columbia-Union-Caddo-Bossier-Webster-Claiborne-
Lincoln-De Soto-Red River-Bienville-Jackson-Ouachita-Sabine-
Natchitoches-Winn-Grant-Caldwell-La Salle-Bowie-Franklin-Titus-
Camp-Morris-Cass-Wood-Upshur-Marion-Smith-Gregg-Harrison-Cherokee-
Rusk-Panola-Nacogdoches-Shelby-Angelina-San Augustine-
1126 AM CDT Sun Jul 23 2017

This Hazardous Weather Outlook is for portions of south central
Arkansas, southwest Arkansas, north central Louisiana, northwest
Louisiana, east Texas and northeast Texas.

.DAY ONE...This Afternoon and Tonight...

The upper low over the Gulf coast remains in play today with
another good sea breeze push inland. Scattered showers and
thunderstorms over much the area this afternoon will be capable
of producing gusty winds to 30 MPH, deadly lightning and brief
heavy rainfall. An isolated storm may produce damaging winds as
storms develop on outflow boundaries from previous storms.

.DAYS TWO THROUGH SEVEN...Monday through Saturday...

The pattern aloft that has brought this recent chance for
rainfall will linger to some extent into the work week as another
upper disturbance over Northern Mississippi drifts our way in the
Tropical Easterlies for early in the work week. Rain chances will
start to taper off as the upper ridge returns, suppressing the
chance for rain in the Four State Area mid to late week with
daytime highs climbing back into the middle to upper nineties.
This will likely mean more heat advisories for the late week.

.SPOTTER INFORMATION STATEMENT...

Activation of emergency management personnel, amateur radio
operators and storm spotters will not be needed through tonight.

ARZ050-051-059>061-OKZ077-TXZ096-241630-
Sevier-Howard-Little River-Hempstead-Nevada-McCurtain-Red River-
1126 AM CDT Sun Jul 23 2017

This Hazardous Weather Outlook is for portions of southwest
Arkansas, southeast Oklahoma and northeast Texas.

.DAY ONE...This Afternoon and Tonight...

A heat advisory will remain in effect until 6 PM CDT for areas
along and North of I-30. The combination of the hot temperatures
and relative humidity producing maximum heat indices of 105 to 108
degrees. Precautions should be taken to prevent heat related
injuries if out and about during the day. Widely scattered
showers and thunderstorms over the area will be capable of
producing gusty winds to 30 MPH, deadly lightning and brief heavy
rainfall. An isolated storm may produce damaging winds as storms
develop on outflow boundaries from previous storms.

.DAYS TWO THROUGH SEVEN...Monday through Saturday...

The pattern aloft that has brought this recent chance for
rainfall will linger to some extent into the work week as another
upper disturbance over Northern Mississippi drifts our way in the
Tropical Easterlies for early in the work week. Rain chances will
start to taper off as the upper ridge returns, suppressing the
chance for rain in the Four State Area mid to late week with
daytime highs climbing back into the middle to upper nineties.
This will likely mean more heat advisories for the late week.

.SPOTTER INFORMATION STATEMENT...

Activation of emergency management personnel, amateur radio
operators and storm spotters should not be needed through
tonight.

19

In the hours before

Special weather statement, Jul 23, 1:53 PM CDT, 4 hours 2 minutes before
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Special weather statement, Jul 23, 3:45 PM CDT, 2 hours 10 minutes before
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Special weather statement, Jul 23, 3:48 PM CDT, 2 hours 7 minutes before
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Special weather statement, Jul 23, 4:18 PM CDT, 1 hour 37 minutes before
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Special weather statement, Jul 23, 4:46 PM CDT, 1 hour 9 minutes before
Special Weather Statement
National Weather Service Shreveport LA
446 PM CDT SUN JUL 23 2017

LAZ011-017-018-232230-
Natchitoches LA-Red River LA-Sabine LA-
446 PM CDT SUN JUL 23 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN RED RIVER...
NORTHWESTERN NATCHITOCHES AND NORTHEASTERN SABINE PARISHES UNTIL 530
PM CDT...

At 445 PM CDT, Doppler radar was tracking a strong thunderstorm near
Coushatta, or 19 miles northwest of Natchitoches, moving south at 15
mph.

Winds in excess of 40 mph will be possible with this storm.

Locations impacted include...
Natchitoches, Coushatta, Campti, Allen, Martin, Clarence, Edgefield,
Robeline, Powhatan, Lake End, Grand Ecore, Hanna, Marthaville,
Hagewood, Armistead and Ajax.

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 3192 9344 3193 9342 3192 9342 3192 9338
      3193 9338 3193 9335 3194 9337 3197 9338
      3199 9341 3199 9343 3210 9342 3214 9322
      3173 9297 3167 9346
TIME...MOT...LOC 2145Z 352DEG 13KT 3197 9330

05
Special weather statement, Jul 23, 5:55 PM CDT, 0 minutes before
Special Weather Statement
National Weather Service Shreveport LA
555 PM CDT SUN JUL 23 2017

LAZ002-003-012-232345-
Bossier LA-Bienville LA-Webster LA-
555 PM CDT SUN JUL 23 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN WEBSTER...NORTHWESTERN
BIENVILLE AND SOUTHEASTERN BOSSIER PARISHES UNTIL 645 PM CDT...

At 554 PM CDT, Doppler radar was tracking a strong thunderstorm over
Doyline, or 7 miles southwest of Minden, moving north at 5 mph.

Winds in excess of 40 mph will be possible with this storm.

Locations impacted include...
Minden, Haughton, Ringgold, Sibley, Doyline, Dubberly, Dixie Inn,
Heflin, Jamestown, Curtis, Lake Bistineau South, Elm Grove, Plum
Orchard Landing, Koran, Gilark, Noles Landing, Lake Bistineau North,
Mc Dade and Ogden.

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 3231 9317 3231 9353 3232 9354 3231 9355
      3233 9354 3235 9356 3233 9356 3234 9357
      3253 9353 3267 9348 3269 9319 3263 9317
      3259 9318 3258 9316
TIME...MOT...LOC 2254Z 118DEG 5KT 3253 9337

05

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 23, 5:25 AM CDTHeat AdvisorySHVRed River13 hr
Jul 23, 3:45 PM CDTSpecial Weather StatementSHVPanola45 min
Jul 23, 3:48 PM CDTSpecial Weather StatementSHVWood42 min
Jul 23, 6:39 PM CDTSpecial Weather StatementSHVCherokee51 min
Jul 23, 4:18 PM CDTSpecial Weather StatementSHVDe Soto57 min
Jul 23, 4:46 PM CDTSpecial Weather StatementSHVNatchitoches, Red River44 min
Jul 23, 5:29 PM CDTSevere Thunderstorm WarningSHVNatchitoches, Sabine46 min
Jul 23, 1:53 PM CDTSpecial Weather StatementSHVUnion52 min

Nearby

Special Weather Statements in Louisiana, 2017Every special weather statement in 2017

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.