Alert archive / Texas / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 190, NWS Shreveport, LA
NWS Shreveport, LA issued this severe thunderstorm warning at May 9, 1998, 1:14 AM CDT for Smith County, Wood County, Texas. It was in force for 61 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
- May 9, 1998, 1:14 AM CDT (06:14 UTC)
- Expired
- May 9, 1998, 2:15 AM CDT
- In force
- 61 min
- Issued by
- NWS Shreveport, LA
- Area
- Whole counties
Counties Smith County, TX, Wood County, TX
The radar
The Shreveport radar (KSHV), 140 km from the middle of the area, began a volume at 06:20 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 |
|---|---|---|---|
| May 9, 1:20 AM CDT | Thunderstorm Wind 60 | Mineola, 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 9, 12:45 AM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Shreveport, LA (KSHV), launched 00:00Z, 6.2 hours before the alert went out and 148 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
- 2343 m above ground
- 0-6 km bulk shear
- 67 kt
- 0-1 km storm-relative helicity
- 30 m²/s²
- 0-3 km storm-relative helicity
- 201 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.
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 May 8, 8:15 PM CDT, 4 hours 59 minutes earlier.
Area forecast discussion, May 8, 8:15 PM CDT, 4 hours 59 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SHREVEPORT LA 815 PM CDT FRI MAY 8 1998 STILL A FAIRLY LARGE CAP IN PLACE ACRSZ MUCH OF THE CWA ERLY THIS EVNG BUT THAT SHUD ALL CHANGE LATER TONIGHT. CONVECTION ACRS NW TX CONTG TO MOVE E AND QUASI STATIONARY BOUNDARY S OF CWA SHUD BGN TO LIFT N AS WARM FNT LATER THIS EVNG. INCREASING H85 JET TONIGHT ALONG WITH PROXIMITY OF BOUNDARY SHUD AID IN DVLPMT OF ADDITIONAL CONVECTION ACRS CNTRL TX WHICH SHUD PUSH E INTO NRN SECTIONS OF THE CWA. SOME DVLPMT ALSO POSSIBLE ACRS SRN SECTIONS BUT WUD BE MORE WIDELY SCATTERED. MAIN SUGGESTION WILL BE TO INCREASE POPS ACRS NE TX FROM CURRENT 20 TO CLOSE TO 50 ALONG THE RED RVR...40 IN TYR AND GGG AND 30 NEAR LFK FOR TONIGHT. WILL ALSO NEED TO LOOK AT RAISING SW AR INTO LIKELY CAT FOR LATER TONIGHT AS WELL. OTHERWISE NO CHANGES. 18
The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 1:24 AM CDT | Tornado Warning | SHV | Wood | 31 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.