Alert archive / Texas / Tornado Warnings in 1998
Tornado Warning 10, NWS Fort Worth, TX
NWS Fort Worth, TX issued this tornado warning at Apr 16, 1998, 12:38 AM CDT for Denton County, Texas. It was in force for 52 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- Apr 16, 1998, 12:38 AM CDT (05:38 UTC)
- Expired
- Apr 16, 1998, 1:30 AM CDT
- In force
- 52 min
- Issued by
- NWS Fort Worth, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Denton County, TX
The radar
The Dallas/Ft Worth radar (KFWS), 81 km from the middle of the area, began a volume at 05:40 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 16, 12:15 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Fort Worth, TX (KFWD), launched 00:00Z, 5.6 hours before the alert went out and 54 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
- 1195 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 1250 m above ground
- 0-6 km bulk shear
- 86 kt
- 0-1 km storm-relative helicity
- 51 m²/s²
- 0-3 km storm-relative helicity
- 103 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KFTW 160543
TORFTW
TXC121-160630-
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE FORT WORTH TX
1238 AM CDT THU APR 16 1998
THE NATIONAL WEATHER SERVICE IN FORT WORTH HAS ISSUED A
* TORNADO WARNING FOR
DENTON COUNTY IN TEXAS
INCLUDING SANGER...PILOT POINT AND DENTON
* UNTIL 130 AM CDT
* AT 1234 AM CDT NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A
DEVELOPING TORNADO 18 MILES NORTHWEST OF KRUM...MOVING ,EAST AT
50 MILES PER HOUR.
* OTHER LOCATIONS IN THE WARNING INCLUDE KRUM...KRUGERVILLE AND
AUBREY
THE TORNADO WAS MOVING EAST AT 50 MILES PER HOUR.
LAT...LON 3317 9685 3318 9738 3343 9738 3342 9686What forecasters said that day
The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Apr 15, 7:53 PM CDT, 4 hours 45 minutes before
TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-160500- SEVERE WEATHER OUTLOOK FOR NORTH TEXAS NATIONAL WEATHER SERVICE FORT WORTH TX 753 PM CDT WED APR 15 1998 THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TONIGHT OVER THE EASTERN HALF OF NORTH TEXAS. THIS SLIGHT RISK AREA IS GENERALLY ALONG AND EAST OF A GAINESVILLE...MINERAL WELLS...TO COMANCHE LINE... AND INCLUDES THE CITIES OF ATHENS...DENTON...GREENVILLE...KILLEEN... PALESTINE...PARIS...SHERMAN...STEPHENVILLE....AND THE DALLAS/FORT WORTH METROPLEX. EARLY THIS EVENING...AN AREA OF LOW PRESSURE WAS LOCATED ON THE RED RIVER NORTH OF GAINESVILLE. A DRYLINE...A BOUNDARY SEPARATING MOIST UNSTABLE AIR ON THE EAST FROM WARM DRY AIR TO THE WEST...EXTENDED SOUTHWESTWARD FROM THIS LOW...THROUGH MINERAL WELLS AND STEPHENVILLE ...TO NEAR COMANCHE. ALOFT...AN UPPER LEVEL STORM SYSTEM WAS MOVING INTO THE TEXAS PANHANDLE. SCATTERED THUNDERSTORMS WERE DEVELOPING ALONG THE DRYLINE...AND ADDITIONAL DEVELOPMENT APPEARS LIKELY AS THE UPPER LEVEL SYSTEM APPROACHES NORTH TEXAS. THE DRYLINE SHOULD MOVE EAST ACROSS THE AREA DURING THE LATE NIGHT HOURS...ENDING THE SEVERE WEATHER THREAT FOR NORTH TEXAS. THE BEST CHANCES FOR SEVERE WEATHER WILL BE NORTH OF I30 THIS EVENING...WHERE THE COMBINATION OF CONVERGENCE ALONG THE DRYLINE AND UPPER LEVEL SUPPORT ARE FAVORABLE FOR SEVERE THUNDERSTORM DEVELOPMENT. FARTHER SOUTH...A LAYER OF WARM AIR IN THE MID LEVELS OF THE ATMOSPHERE SHOULD SUPPRESS THUNDERSTORM DEVELOPMENT UNTIL THE ARRIVAL OF THE UPPER LEVEL STORM SYSTEM LATER TONIGHT. THE PRIMARY SEVERE WEATHER THREAT WILL BE FROM LARGE HAIL AND DAMAGING STRAIGHT LINE WINDS. IN ADDITION...THE WIND PROFILE IN THE LOWEST 5000 FEET SHOULD BE FAVORABLE FOR A FEW STORMS CAPABLE OF PRODUCING TORNADOES. LAW ENFORCEMENT AGENCIES...EMERGENCY MANAGEMENT OFFICIALS...STORM SPOTTER GROUPS...AND OTHER INTERESTED CONCERNS SHOULD MONITOR THIS SITUATION AND TAKE APPROPRIATE ACTION SHOULD SEVERE WEATHER THREATEN YOUR AREA. ACTIVATION MAY BE REQUESTED WEST OF A PARIS...CORSICANA ...TO KILLEEN LINE BEFORE 900 PM...AND EAST OF THIS LINE ANYTIME AFTER 900 PM. STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL TELEVISION OR RADIO STATIONS...OR YOUR CABLE TELEVISION PROVIDER FOR LATER STATEMENTS CONCERNING THIS POTENTIALLY DANGEROUS SEVERE WEATHER THREAT. 70
Special weather statement, Apr 15, 7:53 PM CDT, 4 hours 45 minutes before
TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-160500- SEVERE WEATHER OUTLOOK FOR NORTH TEXAS NATIONAL WEATHER SERVICE FORT WORTH TX 753 PM CDT WED APR 15 1998 THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TONIGHT OVER THE EASTERN HALF OF NORTH TEXAS. THIS SLIGHT RISK AREA IS GENERALLY ALONG AND EAST OF A GAINESVILLE...MINERAL WELLS...TO COMANCHE LINE... AND INCLUDES THE CITIES OF ATHENS...DENTON...GREENVILLE...KILLEEN... PALESTINE...PARIS...SHERMAN...STEPHENVILLE....AND THE DALLAS/FORT WORTH METROPLEX. EARLY THIS EVENING...AN AREA OF LOW PRESSURE WAS LOCATED ON THE RED RIVER NORTH OF GAINESVILLE. A DRYLINE...A BOUNDARY SEPARATING MOIST UNSTABLE AIR ON THE EAST FROM WARM DRY AIR TO THE WEST...EXTENDED SOUTHWESTWARD FROM THIS LOW...THROUGH MINERAL WELLS AND STEPHENVILLE ...TO NEAR COMANCHE. ALOFT...AN UPPER LEVEL STORM SYSTEM WAS MOVING INTO THE TEXAS PANHANDLE. SCATTERED THUNDERSTORMS WERE DEVELOPING ALONG THE DRYLINE...AND ADDITIONAL DEVELOPMENT APPEARS LIKELY AS THE UPPER LEVEL SYSTEM APPROACHES NORTH TEXAS. THE DRYLINE SHOULD MOVE EAST ACROSS THE AREA DURING THE LATE NIGHT HOURS...ENDING THE SEVERE WEATHER THREAT FOR NORTH TEXAS. THE BEST CHANCES FOR SEVERE WEATHER WILL BE NORTH OF I30 THIS EVENING...WHERE THE COMBINATION OF CONVERGENCE ALONG THE DRYLINE AND UPPER LEVEL SUPPORT ARE FAVORABLE FOR SEVERE THUNDERSTORM DEVELOPMENT. FARTHER SOUTH...A LAYER OF WARM AIR IN THE MID LEVELS OF THE ATMOSPHERE SHOULD SUPPRESS THUNDERSTORM DEVELOPMENT UNTIL THE ARRIVAL OF THE UPPER LEVEL STORM SYSTEM LATER TONIGHT. THE PRIMARY SEVERE WEATHER THREAT WILL BE FROM LARGE HAIL AND DAMAGING STRAIGHT LINE WINDS. IN ADDITION...THE WIND PROFILE IN THE LOWEST 5000 FEET SHOULD BE FAVORABLE FOR A FEW STORMS CAPABLE OF PRODUCING TORNADOES. LAW ENFORCEMENT AGENCIES...EMERGENCY MANAGEMENT OFFICIALS...STORM SPOTTER GROUPS...AND OTHER INTERESTED CONCERNS SHOULD MONITOR THIS SITUATION AND TAKE APPROPRIATE ACTION SHOULD SEVERE WEATHER THREATEN YOUR AREA. ACTIVATION MAY BE REQUESTED WEST OF A PARIS...CORSICANA ...TO KILLEEN LINE BEFORE 900 PM...AND EAST OF THIS LINE ANYTIME AFTER 900 PM. STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL TELEVISION OR RADIO STATIONS...OR YOUR CABLE TELEVISION PROVIDER FOR LATER STATEMENTS CONCERNING THIS POTENTIALLY DANGEROUS SEVERE WEATHER THREAT. 70
The office that day
Everything else NWS Fort Worth, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 15, 11:32 PM CDT | Severe Thunderstorm Warning | FWD | Jack, Young | 43 min |
| Apr 15, 11:47 PM CDT | Severe Thunderstorm Warning | FWD | Stephens | 43 min |
| Apr 16, 12:08 AM CDT | Severe Thunderstorm Warning | FWD | Montague, Wise | 37 min |
| Apr 16, 12:28 AM CDT | Severe Thunderstorm Warning | FWD | Cooke | 47 min |
| Apr 16, 12:35 AM CDT | Tornado Warning | FWD | Wise | 40 min |
| Apr 16, 1:00 AM CDT | Severe Thunderstorm Warning | FWD | Collin | 60 min |
| Apr 16, 1:08 AM CDT | Severe Thunderstorm Warning | FWD | Grayson | 62 min |
| Apr 16, 2:48 AM CDT | Severe Thunderstorm Warning | FWD | Collin | 42 min |
Nearby
Tornado Warnings in Texas, 1998Every tornado warning in 1998Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.