Alert archive / Texas / Severe Thunderstorm Watches in 1997
Severe Thunderstorm Watch 177
The Storm Prediction Center issued this severe thunderstorm watch at Apr 22, 1997, 5:00 AM CDT for 4 states. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 22, 1997, 5:00 AM CDT (10:00 UTC)
- Expired
- Apr 22, 1997, 11:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 69 counties
Ashley County, AR, Bradley County, AR, Calhoun County, AR, Clark County, AR, Cleveland County, AR, Columbia County, AR, Dallas County, AR, Drew County, AR, Hempstead County, AR, Howard County, AR, Lafayette County, AR, Lincoln County, AR, Little River County, AR, Miller County, AR, Nevada County, AR, Ouachita County, AR, Pike County, AR, Sevier County, AR, Union County, AR, Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Claiborne Parish, LA, De Soto Parish, LA, Jackson Parish, LA, Lincoln Parish, LA, Natchitoches Parish, LA, Ouachita Parish, LA, Red River Parish, LA, Union Parish, LA, Webster Parish, LA, Winn Parish, LA, Bryan County, OK, Choctaw County, OK, McCurtain County, OK, Anderson County, TX, Bowie County, TX, Camp County, TX, Cass County, TX, Cherokee County, TX, Collin County, TX, Dallas County, TX, Delta County, TX, Ellis County, TX, Fannin County, TX, Franklin County, TX, Freestone County, TX, Gregg County, TX, Harrison County, TX, Henderson County, TX, Hill County, TX, Hopkins County, TX, Hunt County, TX, Kaufman County, TX, Lamar County, TX, Marion County, TX, Morris County, TX, Navarro County, TX, Panola County, TX, Rains County, TX, Red River County, TX, Rockwall County, TX, Rusk County, TX, Shelby County, TX, Smith County, TX, Titus County, TX, Upshur County, TX, Van Zandt County, TX, Wood County, TX
The radar
The Shreveport radar (KSHV), 110 km from the middle of the area, began a volume at 10:01 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.
Warnings issued inside it
30 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 22, 5:03 AM CDT | Severe Thunderstorm Warning | SHV | Hempstead | 57 min |
| Apr 22, 5:10 AM CDT | Severe Thunderstorm Warning | FWD | Fannin | 65 min |
| Apr 22, 5:16 AM CDT | Severe Thunderstorm Warning | SHV | Marion | 44 min |
| Apr 22, 5:18 AM CDT | Severe Thunderstorm Warning | FWD | Delta, Hopkins, Lamar, Rains | 57 min |
| Apr 22, 5:18 AM CDT | Severe Thunderstorm Warning | FWD | Van Zandt | 57 min |
| Apr 22, 5:31 AM CDT | Severe Thunderstorm Warning | SHV | Webster | 59 min |
| Apr 22, 5:41 AM CDT | Severe Thunderstorm Warning | SHV | Caddo | 64 min |
| Apr 22, 5:51 AM CDT | Severe Thunderstorm Warning | SHV | Wood | 69 min |
| Apr 22, 5:58 AM CDT | Severe Thunderstorm Warning | SHV | Bossier | 62 min |
| Apr 22, 6:03 AM CDT | Severe Thunderstorm Warning | SHV | Marion | 57 min |
| Apr 22, 6:15 AM CDT | Severe Thunderstorm Warning | SHV | Camp, Morris, Titus, Upshur | 60 min |
| Apr 22, 6:15 AM CDT | Severe Thunderstorm Warning | SHV | Franklin | 60 min |
| Apr 22, 6:43 AM CDT | Flash Flood Warning | SHV | Bossier, Caddo | 3 hr |
| Apr 22, 6:49 AM CDT | Severe Thunderstorm Warning | SHV | Bossier, Caddo | 56 min |
| Apr 22, 6:57 AM CDT | Severe Thunderstorm Warning | SHV | Bowie, Cass, Marion | 63 min |
| Apr 22, 6:57 AM CDT | Severe Thunderstorm Warning | SHV | Harrison | 63 min |
| Apr 22, 7:13 AM CDT | Severe Thunderstorm Warning | SHV | Webster | 62 min |
| Apr 22, 7:29 AM CDT | Severe Thunderstorm Warning | SHV | Claiborne | 61 min |
| Apr 22, 7:35 AM CDT | Severe Thunderstorm Warning | SHV | Lafayette, Miller | 55 min |
| Apr 22, 8:01 AM CDT | Tornado Warning | SHV | Claiborne, Lincoln | 44 min |
| Apr 22, 8:12 AM CDT | Severe Thunderstorm Warning | SHV | De Soto | 33 min |
| Apr 22, 8:15 AM CDT | Severe Thunderstorm Warning | SHV | Bienville, Webster | 45 min |
| Apr 22, 8:15 AM CDT | Severe Thunderstorm Warning | SHV | Red River | 45 min |
| Apr 22, 8:44 AM CDT | Tornado Warning | SHV | Lincoln | 31 min |
| Apr 22, 8:47 AM CDT | Severe Thunderstorm Warning | SHV | Union | 43 min |
| Apr 22, 8:58 AM CDT | Severe Thunderstorm Warning | SHV | Bienville, Jackson, Lincoln | 62 min |
| Apr 22, 8:58 AM CDT | Severe Thunderstorm Warning | SHV | Union | 62 min |
| Apr 22, 9:00 AM CDT | Severe Thunderstorm Warning | SHV | Natchitoches, Winn | 60 min |
| Apr 22, 9:17 AM CDT | Severe Thunderstorm Warning | SHV | Ouachita | 58 min |
| Apr 22, 9:55 AM CDT | Severe Thunderstorm Warning | JAN | Ashley | 35 min |
The nearest sounding before it
Shreveport, LA (KSHV), launched 00:00Z, 10.0 hours before the alert went out and 118 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
- 310 J/kg
- Mixed-layer CIN
- -45 J/kg
- Mixed-layer LCL
- 1727 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 4 m²/s²
- 0-3 km storm-relative helicity
- 49 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 21, 10:00 PM CDT | Severe Thunderstorm Watch | SPC | Ashley, Columbia, Lafayette, Little River, Miller, Union | 6 hr |
| Apr 22, 8:45 AM CDT | Tornado Watch | SPC | Ashley, Chicot | 6 hr |
| Apr 22, 1:00 AM CDT | Tornado Watch | SPC | Bienville, Bossier, Caddo, Claiborne, De Soto, Natchitoches and 3 more | 5 hr |
| Apr 22, 1:15 PM CDT | Severe Thunderstorm Watch | SPC | Acadia, Allen, Beauregard, Calcasieu, Cameron, Evangeline and 2 more | 6 hr |
| Apr 22, 2:30 PM CDT | Severe Thunderstorm Watch | SPC | Acadia, Ascension, Assumption, Avoyelles, Catahoula, Concordia and 24 more | 7 hr |
| Apr 21, 9:00 PM CDT | Severe Thunderstorm Watch | SPC | Beckham, Greer, Harmon, Jackson | 6 hr |
| Apr 22, 1:45 AM CDT | Severe Thunderstorm Watch | SPC | Bryan, Carter, Coal, Cotton, Jackson, Jefferson and 6 more | 4 hr |
Nearby
Severe Thunderstorm Watches in Texas, 1997Severe Thunderstorm Watches in Arkansas, 1997Severe Thunderstorm Watches in Louisiana, 1997Every severe thunderstorm watch in 1997
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.