Alert archive / Texas / Special Weather Statements in 2021
Special Weather Statement, NWS Shreveport, LA
NWS Shreveport, LA issued this special weather statement at Apr 13, 2021, 5:52 PM CDT for Shelby County, Texas. It was in force for 38 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
- Apr 13, 2021, 5:52 PM CDT (22:52 UTC)
- Expired
- Apr 13, 2021, 6:30 PM CDT
- In force
- 38 min
- Issued by
- NWS Shreveport, LA
County Shelby County, TX
The radar
The Shreveport radar (KSHV), 82 km from the middle of the area, began a volume at 22:56 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, 10.9 hours before the alert went out and 90 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1548 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 28 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 Apr 13, 5:23 PM CDT, 29 minutes earlier.
Area forecast discussion, Apr 13, 5:23 PM CDT, 29 minutes before
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</html>Hazardous weather outlook, Apr 13, 3:20 PM CDT, 2 hours 32 minutes before
Hazardous Weather Outlook National Weather Service Shreveport LA 320 PM CDT Tue Apr 13 2021 ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077- TXZ096-097-108>112-124>126-136>138-149>153-165>167-142030- Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette- Columbia-Union-Caddo-Bossier-Webster-Claiborne-Lincoln-De Soto- Red River-Bienville-Jackson-Ouachita-Sabine-Natchitoches-Winn- Grant-Caldwell-La Salle-McCurtain-Bowie-Franklin-Titus-Camp- Morris-Cass-Wood-Upshur-Marion-Smith-Gregg-Harrison-Cherokee-Rusk- Panola-Nacogdoches-Shelby-Angelina-San Augustine- 320 PM CDT Tue Apr 13 2021 This Hazardous Weather Outlook is for portions of south central Arkansas, southwest Arkansas, north central Louisiana, northwest Louisiana, southeast Oklahoma, east Texas and northeast Texas. .DAY ONE...This Afternoon and Tonight... Scattered showers and thunderstorms will increase through the afternoon and evening across portions of Deep East Texas and West Central Louisiana, near a warm front that will lift north across these areas. Given the moderate instability expected to develop at the surface and aloft, some of these storms may be strong or severe, with damaging winds and large hail possible. While these storms should weaken this evening with the loss of heating, additional showers and thunderstorms will develop areawide late this evening through the overnight hours near and behind a cold front and approaching upper level disturbance. Some of these storms may also become strong or severe late tonight, with large hail and possibly damaging winds again possible over much of the region. .DAYS TWO THROUGH SEVEN...Wednesday through Monday... Showers and thunderstorms will be ongoing across much of the region Wednesday morning, with an isolated severe weather threat lingering near and behind the weak cold front across East Texas and North Louisiana. Hail and locally gusty winds will remain possible Wednesday morning, before the storms exit the region by early afternoon. Additional scattered showers and isolated thunderstorms will again be possible Wednesday night through Saturday. However, no additional hazardous weather is expected. .SPOTTER INFORMATION STATEMENT... Activation of emergency management personnel...amateur radio operators...and storm spotters may be needed this afternoon across Deep East Texas and Northcentral Louisiana, and tonight across much of the region. 19
In the hours before
Special weather statement, Apr 13, 4:26 PM CDT, 1 hour 26 minutes before
Special Weather Statement
National Weather Service Shreveport LA
426 PM CDT Tue Apr 13 2021
TXZ153-166-132215-
San Augustine TX-Shelby TX-
426 PM CDT Tue Apr 13 2021
...SIGNIFICANT WEATHER ADVISORY FOR SOUTH CENTRAL SHELBY AND NORTH
CENTRAL SAN AUGUSTINE COUNTIES UNTIL 515 PM CDT...
At 426 PM CDT, Doppler radar was tracking a strong thunderstorm near
Neuville, or 10 miles southwest of Center. This storm was nearly
stationary.
Half inch hail and winds in excess of 40 mph will be possible with
this storm.
Locations impacted include...
Neuville and Jericho.
LAT...LON 3161 9435 3162 9436 3171 9431 3173 9418
3170 9409 3160 9424
TIME...MOT...LOC 2126Z 296DEG 3KT 3166 9425
13Local storm report, Apr 13, 5:10 PM CDT, 42 minutes before
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</html>Special weather statement, Apr 13, 5:52 PM CDT, 0 minutes before
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</html>The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 13, 4:26 PM CDT | Special Weather Statement | SHV | Shelby | 49 min |
| Apr 13, 4:53 PM CDT | Severe Thunderstorm Warning | SHV | Nacogdoches, San Augustine, Shelby | 37 min |
| Apr 13, 5:31 PM CDT | Severe Thunderstorm Warning | SHV | Nacogdoches, San Augustine, Shelby | 59 min |
| Apr 13, 6:00 PM CDT | Special Weather Statement | SHV | San Augustine | 30 min |
| Apr 13, 6:27 PM CDT | Severe Thunderstorm Warning | SHV | Panola, Rusk, Shelby | 63 min |
Nearby
Special Weather Statements in Texas, 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.