Alert archive / Texas / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 372, NWS Shreveport, LA
NWS Shreveport, LA issued this severe thunderstorm warning at Oct 3, 1998, 12:01 AM CDT for Harrison County, Texas. It was in force for 64 min. 3 reports 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
- Oct 3, 1998, 12:01 AM CDT (05:01 UTC)
- Expired
- Oct 3, 1998, 1:05 AM CDT
- In force
- 64 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 05:04 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 |
|---|---|---|---|
| Oct 3, 12:06 AM CDT | Thunderstorm Wind 55 | Harleton, TX | Numerous trees down in town. |
| Oct 3, 12:16 AM CDT | Thunderstorm Wind 52 | Marshall, TX | Numerous trees toppled along Loop 390. |
| Oct 3, 12:16 AM CDT | Thunderstorm Wind 55 | Karnack, TX | Numerous trees toppled along Hwy 43. |
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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Oct 2, 8:30 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Shreveport, LA (KSHV), launched 00:00Z, 5.0 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
- 493 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 1417 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 95 m²/s²
- 0-3 km storm-relative helicity
- 191 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 6.4
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 Oct 2, 8:30 PM CDT, 3 hours 31 minutes earlier.
Area forecast discussion, Oct 2, 8:30 PM CDT, 3 hours 31 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SHREVEPORT LA 830 PM CDT FRI OCT 2 1998 CONVECTION COMTS TO DEVELOP ALONG AND N OF SURFACE BOUNDARY STRETCHING ALONG TX/OK BORDER INTO N LA AND S AR. THIS BOUNDARY SHOULD BEGIN TO SLOWLY LIFT ACROSS CWA TONIGHT AS SHORT WAVE CONTS TO ROTATE ENE ACROSS THE REGION. UPR LOW SEEN WELL IN WATER VAPOR IMAGERY OVER WRN PLAINS WITH SHORT WAVE EXTENDING INTO W CENTRAL TX. DRY LINE ACTIVITY IN W TX SHOULD DIE WELL BEFORE IT REACHES CWA BUT ACTIVITY ACROSS N CENTRAL TX SHOULD HOLD TOGETHER AND MOVE INTO NE TX...SE OK AND SW AR. LOOKS LIKE WE CAN LOWER POPS TO CHANCE CAT NW LA AND SLIGHT CHANCE NE LA FOR TONIGHT. ALSO NEED TO LOOK AT RECONFIGURING FFA FOR NE TX AS HEAVIEST RAINS SHOULD STAY N OF TXK TO DFW LINE AND MOST OF NE TX HAS SEEN LITTLE IN THE WAY OF RAIN YET. 18
The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 2, 9:25 PM CDT | Severe Thunderstorm Warning | SHV | Franklin | 35 min |
| Oct 2, 9:31 PM CDT | Severe Thunderstorm Warning | SHV | Red River, Titus | 49 min |
| Oct 2, 10:19 PM CDT | Severe Thunderstorm Warning | SHV | Morris | 31 min |
| Oct 2, 10:45 PM CDT | Severe Thunderstorm Warning | SHV | Wood | 60 min |
| Oct 2, 11:26 PM CDT | Severe Thunderstorm Warning | SHV | Upshur | 44 min |
| Oct 2, 11:52 PM CDT | Severe Thunderstorm Warning | SHV | Marion | 63 min |
| Oct 3, 12:38 AM CDT | Severe Thunderstorm Warning | SHV | Bossier, Caddo | 47 min |
Nearby
Severe Thunderstorm Warnings in Texas, 1998Every severe thunderstorm warning in 1998
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.