Alert archive / Texas / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 388, NWS Shreveport, LA
NWS Shreveport, LA issued this severe thunderstorm warning at Nov 5, 1997, 6:31 AM CST for Harrison County, Texas. It was in force for 44 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Nov 5, 1997, 6:31 AM CST (12:31 UTC)
- Expired
- Nov 5, 1997, 7:15 AM CST
- In force
- 44 min
- Issued by
- NWS Shreveport, LA
- Area
- Whole counties
County Harrison County, TX
The radar
The Shreveport radar (KSHV), 51 km from the middle of the area, began a volume at 12:34 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Nov 5, 6:40 AM CST | Hail 0.88 | Waskom, TX |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Shreveport, LA (KSHV), launched 12:00Z, 0.5 hours before the alert went out and 59 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
- 85 J/kg
- Mixed-layer CIN
- -182 J/kg
- Mixed-layer LCL
- 621 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 466 m²/s²
- 0-3 km storm-relative helicity
- 616 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 8.7
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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 Nov 5, 3:04 AM CST, 3 hours 27 minutes earlier.
Area forecast discussion, Nov 5, 3:04 AM CST, 3 hours 27 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SHREVEPORT LA 240 AM CST WED NOV 5 1997 QUITE A BIT OF CNVTN GOING ON THIS MORNING SO THIS WILL NOT BE VERY LONG. STG S/WV CONTS TO DIVE SE DOWN THE BACK SIDE OF THE ERN CONUS TROF THIS MORNING AND LOW PRESSURE IS DEEPENING AT THE SFC IN RESPONSE. SRLY FLOW IN THE LOW LVLS CONTS TO DRAW MSTR NWD AND IS YIELDING NMRS ELEVATED SHRA/TSRA AS IT INTERACTS WITH THE MID/UPR LVL ENERGY. MDLS ARE A LITTLE SLOWER WITH THE FRONT THAN 24 HRS AGO AND NOW INDICATE THE BNDRY REACHING NR TXK ARND 21Z...SHV NR 00Z AND EXITING THE AREA BY ARND 06Z. VRY DRY AND SOMEWHAT COOLER AIR WILL SPILL IN BEHIND THE SYS AND WILL RESULT IN FAIR AND DRY WX FOR US AS WE HEAD TWD THE END OF THE WEEK. FWC GUIDANCE HAS BEEN PRETTY CONSISTENT LATELY AND THE CRNT NUMBERS LOOK OK. ETA AND AVN ARE A LITTLE COOLER THAN FWC ON THU BUT WITH MAX SUNSHINE...THINK THE FWC NUMBERS ARE REACHABLE. SHV 69/46/60/37 7200 MLU 65*/47/61/38 8500 5
The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 5, 5:32 AM CST | Severe Thunderstorm Warning | SHV | Bowie | 43 min |
| Nov 5, 5:58 AM CST | Severe Thunderstorm Warning | SHV | Cass | 47 min |
| Nov 5, 6:18 AM CST | Severe Thunderstorm Warning | SHV | Morris | 27 min |
| Nov 5, 7:27 AM CST | Severe Thunderstorm Warning | SHV | Marion | 48 min |
| Nov 5, 8:40 AM CST | Severe Thunderstorm Warning | SHV | Harrison | 35 min |
| Nov 5, 6:43 AM CST | Severe Thunderstorm Warning | SHV | Caddo | 47 min |
| Nov 5, 6:59 AM CST | Severe Thunderstorm Warning | SHV | Bossier | 61 min |
| Nov 5, 7:13 AM CST | Severe Thunderstorm Warning | SHV | Webster | 47 min |
| Nov 5, 7:33 AM CST | Severe Thunderstorm Warning | SHV | Caddo | 42 min |
| Nov 5, 7:38 AM CST | Severe Thunderstorm Warning | SHV | Claiborne | 52 min |
| Nov 5, 8:32 AM CST | Severe Thunderstorm Warning | SHV | Bossier | 28 min |
| Nov 5, 12:05 AM CST | Severe Thunderstorm Warning | SHV | Miller | 25 min |
| Nov 5, 6:21 AM CST | Severe Thunderstorm Warning | SHV | Lafayette, Miller | 54 min |
Nearby
Severe Thunderstorm Warnings in Texas, 1997Every severe thunderstorm warning 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.