Alert archive / Louisiana / Special Weather Statements in 2021
Special Weather Statement, NWS Shreveport, LA
NWS Shreveport, LA issued this special weather statement at Aug 19, 2021, 1:29 PM CDT for Bossier Parish, Louisiana. It was in force for 46 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
- Aug 19, 2021, 1:29 PM CDT (18:29 UTC)
- Expired
- Aug 19, 2021, 2:15 PM CDT
- In force
- 46 min
- Issued by
- NWS Shreveport, LA
- Hail
- 0.00 in
- Wind
- 40
County Bossier Parish, LA
The radar
The Shreveport radar (KSHV), 26 km from the middle of the area, began a volume at 18:29 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
Shreveport, LA (KSHV), launched 12:00Z, 6.5 hours before the alert went out and 17 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
- 1122 J/kg
- Mixed-layer CIN
- -38 J/kg
- Mixed-layer LCL
- 771 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 10 m²/s²
- 0-3 km storm-relative helicity
- 40 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 Shreveport, LA wrote its last area forecast discussion before this special weather statement went out at Aug 19, 12:32 PM CDT, 57 minutes earlier.
Area forecast discussion, Aug 19, 12:32 PM CDT, 57 minutes before
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Special weather statement, Aug 19, 12:31 PM CDT, 58 minutes before
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</html>Special weather statement, Aug 19, 12:35 PM CDT, 54 minutes before
Special Weather Statement
National Weather Service Shreveport LA
1235 PM CDT Thu Aug 19 2021
TXZ126-138-191815-
Harrison TX-Marion TX-
1235 PM CDT Thu Aug 19 2021
...A strong thunderstorm will impact portions of central Marion and
northern Harrison Counties through 115 PM CDT...
At 1235 PM CDT, Doppler radar was tracking a strong thunderstorm over
Harleton, or 15 miles northeast of Longview, moving northeast at 25
mph.
HAZARD...Winds in excess of 40 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Jefferson, Berea, Harleton, Lodi, Woodlawn, Uncertain, Lassater,
Nesbitt and Pruett.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3288 9445 3288 9424 3270 9413 3254 9457
3270 9470
TIME...MOT...LOC 1735Z 234DEG 23KT 3267 9457
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
50Special weather statement, Aug 19, 1:26 PM CDT, 3 minutes before
Special Weather Statement
National Weather Service Shreveport LA
126 PM CDT Thu Aug 19 2021
LAZ001-002-191900-
Bossier LA-Caddo LA-
126 PM CDT Thu Aug 19 2021
...A strong thunderstorm will impact portions of northwestern Caddo
and northwestern Bossier Parishes through 200 PM CDT...
At 126 PM CDT, Doppler radar was tracking a strong thunderstorm over
Belcher, or 18 miles north of Shreveport, moving northeast at 25 mph.
HAZARD...Winds in excess of 40 mph and pea size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Vivian, Plain Dealing, Oil City, Mooringsport, Hosston, Belcher, Ida,
Gilliam, Dixie, Alden Bridge, Caddo Lake, Cavett and Bolinger.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
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 3302 9392 3302 9377 3294 9354 3261 9383
3269 9405 3273 9405
TIME...MOT...LOC 1826Z 210DEG 20KT 3273 9388
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH
50Special weather statement, Aug 19, 1:29 PM CDT, 0 minutes before
Special Weather Statement
National Weather Service Shreveport LA
129 PM CDT Thu Aug 19 2021
LAZ002-003-191915-
Bossier LA-Webster LA-
129 PM CDT Thu Aug 19 2021
...A strong thunderstorm will impact portions of southwestern Webster
and central Bossier Parishes through 215 PM CDT...
At 129 PM CDT, Doppler radar was tracking a strong thunderstorm near
Eastwood, or near Bossier City, moving northeast at 25 mph.
HAZARD...Winds in excess of 40 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Bossier City, Minden, Haughton, Doyline, Dixie Inn, Eastwood,
Fosters, Princeton, Fillmore, Bodcau, Bellevue, Barksdale Air Force
Base, Gilark, Sligo and Red Chute.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3238 9352 3246 9367 3246 9370 3247 9369
3249 9370 3277 9353 3262 9326
TIME...MOT...LOC 1829Z 210DEG 20KT 3250 9357
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
50The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 19, 6:51 AM CDT | Areal Flood Advisory | SHV | Red River | 3 hr |
| Aug 19, 7:01 AM CDT | Areal Flood Advisory | SHV | Bowie, Morris, Titus | 3 hr |
| Aug 19, 12:35 PM CDT | Special Weather Statement | SHV | Marion | 40 min |
| Aug 19, 1:31 PM CDT | Special Weather Statement | SHV | Cass, Morris | 44 min |
| Aug 19, 12:31 PM CDT | Special Weather Statement | SHV | Caddo | 44 min |
| Aug 19, 1:26 PM CDT | Special Weather Statement | SHV | Bossier | 34 min |
| Aug 19, 2:06 PM CDT | Special Weather Statement | SHV | Red River | 24 min |
| Aug 19, 3:29 PM CDT | Special Weather Statement | SHV | Ouachita, Union | 46 min |
| Aug 19, 2:24 PM CDT | Special Weather Statement | SHV | Columbia | 36 min |
| Aug 19, 3:24 PM CDT | Special Weather Statement | SHV | Hempstead, Little River, Sevier | 36 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.