Alert archive / Texas / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 157, NWS Shreveport, LA
NWS Shreveport, LA issued this severe thunderstorm warning at Jul 6, 2018, 2:07 PM CDT for Cass County, Marion County, Texas. It was in force for 34 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 6, 2018, 2:07 PM CDT (19:07 UTC)
- Expired
- Jul 6, 2018, 2:41 PM CDT
- In force
- 34 min
- Issued by
- NWS Shreveport, LA
- Area
- Storm-based polygon
- Hail
- 0.88 in
- Wind
- 60.0 mph
Counties Cass County, TX, Marion County, TX
The radar
The Shreveport radar (KSHV), 72 km from the middle of the area, began a volume at 19:06 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 (KBAD), launched 12:00Z, 7.1 hours before the alert went out and 76 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
- 1207 J/kg
- Mixed-layer CIN
- -48 J/kg
- Mixed-layer LCL
- 1071 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 48 m²/s²
- 0-3 km storm-relative helicity
- 93 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.9
What forecasters said that day
The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Jul 6, 1:04 PM CDT, 1 hour 3 minutes earlier.
Area forecast discussion, Jul 6, 1:04 PM CDT, 1 hour 3 minutes before
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</html>Hazardous weather outlook, Jul 6, 12:50 PM CDT, 1 hour 17 minutes before
Hazardous Weather Outlook National Weather Service Shreveport LA 1250 PM CDT Fri Jul 6 2018 ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077- TXZ096-097-108>112-124>126-136>138-149>153-165>167-071100- 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- 1250 PM CDT Fri Jul 6 2018 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... An Easterly flow aloft will persist across the Four State Region with embedded disturbances expected to combine with available moisture and daytime heating resulting in destabilization, The result will be scattered showers and thunderstorms during the afternoon and evening. A few of the thunderstorms will become strong with gusty winds to 25-35 MPH, locally heavy rainfall with amounts to near one quarter to one half inch, and deadly lightning. Any hail that falls will be small. An isolated severe storm could form with winds to near 60 MPH but that threat is very small. In addition, afternoon temperatures will climb into the middle and upper 90s and when combined with the relative humidity can produce heat indices from 100-108 degrees. If working or venturing outside While outside, remember to take frequent breaks in the shade, wear light weight clothing and drink plenty of water. .DAYS TWO THROUGH SEVEN...Saturday through Thursday... Rain chances to continue through next week, as a series of tropical waves progressing across the Gulf Coast States and embedded disturbances within the Easterly flow aloft will aid in the development of scattered showers and thunderstorms. A weak cold front moving in Saturday will serve as an additional focus for precipitation. Isolated strong to severe storms will be possible, with damaging winds and brief heavy rainfall the main threats. .SPOTTER INFORMATION STATEMENT... Activation of emergency managers, amateur radio operators, and storm spotters, is not expected through tonight. 06
In the hours before
Special weather statement, Jul 6, 1:02 PM CDT, 1 hour 5 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 |
|---|---|---|---|---|
| Jul 5, 7:06 PM CDT | Severe Thunderstorm Warning | SHV | Sabine, San Augustine, Shelby | 54 min |
| Jul 5, 8:01 PM CDT | Special Weather Statement | SHV | San Augustine | 44 min |
| Jul 5, 8:30 PM CDT | Special Weather Statement | SHV | Sabine | 45 min |
| Jul 6, 1:02 PM CDT | Special Weather Statement | SHV | Marion | 43 min |
| Jul 6, 1:55 PM CDT | Special Weather Statement | SHV | Cass, Upshur | 50 min |
| Jul 6, 2:18 PM CDT | Special Weather Statement | SHV | Camp, Wood | 42 min |
| Jul 6, 2:27 PM CDT | Severe Thunderstorm Warning | SHV | Smith | 48 min |
| Jul 6, 2:30 PM CDT | Severe Thunderstorm Warning | SHV | Camp, Franklin, Smith, Upshur, Wood | 60 min |
| Jul 6, 2:48 PM CDT | Severe Thunderstorm Warning | SHV | Cass, Marion | 39 min |
| Jul 6, 3:58 PM CDT | Special Weather Statement | SHV | Gregg | 47 min |
| Jul 6, 4:37 PM CDT | Special Weather Statement | SHV | Red River | 53 min |
| Jul 6, 6:00 PM CDT | Severe Thunderstorm Warning | SHV | Red River | 25 min |
| Jul 6, 6:04 PM CDT | Severe Thunderstorm Warning | SHV | Hempstead, Howard, Sevier | 56 min |
| Jul 6, 6:30 PM CDT | Special Weather Statement | SHV | Hempstead, Lafayette | 45 min |
| Jul 6, 6:55 PM CDT | Special Weather Statement | SHV | Sevier | 50 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2018Every severe thunderstorm warning 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.