Alert archive / Texas / Tornado Warnings in 1991
Tornado Warning 13, NWS Fort Worth, TX
NWS Fort Worth, TX issued this tornado warning at Apr 12, 1991, 7:43 PM CDT for Johnson County, Texas. It was in force for 47 min. 2 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
- Apr 12, 1991, 7:43 PM CDT (00:43 UTC)
- Expired
- Apr 12, 1991, 8:30 PM CDT
- In force
- 47 min
- Issued by
- NWS Fort Worth, TX
- Area
- Whole counties
County Johnson County, TX
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 12, 7:51 PM CDT | Tornado F2 | Johnson, TX | |
| Apr 12, 8:40 PM CDT | Tornado F0 | Johnson, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Stephenville/Cla, TX (KSEP), launched 00:00Z, 0.7 hours before the alert went out and 71 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
- 2952 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 1539 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 66 m²/s²
- 0-3 km storm-relative helicity
- 122 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 8.7
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KFTW 130058 COR TORFTW TXC251-130130- BULLETIN - EBS ACTIVATION REQUESTED TORNADO WARNING...CORRECTION TO TIME IN THIRD PARAGRAPH NATIONAL WEATHER SERVICE FORT WORTH TX 743 PM CDT FRI APR 12 1991 THE NATIONAL WEATHER SERVICE IN FORT WORTH HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 830 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN NORTH CENTRAL TEXAS ...JOHNSON COUNTY AT 740 PM CDT RADAR CONTINUED TO SHOW A TORNADIC THUNDERSTORM OVER THE SOUTHERN HALF OF JOHNSON COUNTY... MOVING EAST AT ABOUT 10 MPH. RADAR INDICATED THAT THE MOST LIKELY LOCATION FOR A TORNADO WAS JUST SOUTH O CLEBURNE... NEAR THE COMMUNITY OF RIO VISTA. GOLF BALL TO BASEBALL SIZE HAIL WAS REPORTED AT RIO VISTA AT 735 PM. MEANWHILE... A FLASH FLOOD WARNING HAD ALSO BEEN ISSUED FOR JOHNSON COUNTY UNTIL 1030 PM. THIS WAS DUE TO THE HEAVY RAIN AND SLOW MOVEMENT OF THE STORM. ADDITIONAL THUNDERSTORM DEVELOPMENT WAS OCCURRING BETWEEN GRANBURY AND CLEBURNE AND WILL BE MOVING INTO WESTERN JOHNSON COUNTY BY 800 PM. THIS THUNDERSTORM ALSO HAS THE POTENTIAL TO BECOME SEVERE WITH LARGE HAIL. IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.
What 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 12, 3:18 PM CDT, 4 hours 25 minutes before
TXZ019>033-130400- SEVERE WEATHER OUTLOOK FOR NORTH TEXAS NATIONAL WEATHER SERVICE FT WORTH TX 320 PM CDT FRI APR 12 1991 THERE IS A HIGH RISK OF SEVERE THUNDERSTORMS THROUGH TONIGHT NORTHWEST OF A GAINESVILLE-MINERAL WELLS-ABILENE LINE. ADJACENT TO THE HIGH RISK THERE IS A MODERATE RISK NORTHWEST OF A SHERMAN-30 MILES SOUTHEAST OF DALLAS-BROWNWOOD LINE...AND A SLIGHT RISK OVER THE REST OF NORTH TEXAS. THUNDERSTORMS THAT DEVELOP WILL HAVE THE POTENTIAL TO PRODUCE LARGE HAIL...DAMAGING WINDS...FLASH FLOODING...AND POSSIBLY A FEW TORNADOES. LIFTED INDICES ARE BELOW -10 IN WEST AND CENTRAL PORTIONS OF NORTH TEXAS. THE COMBINATION OF EXTREME INSTABILITY AND MODERATE VERTICAL WIND SHEARS SUGGESTS THAT SEVERE WEATHER AND FLASH FLOODING ARE LIKELY OVER PORTIONS OF NORTH TEXAS THROUGH TONIGHT. AT 3PM THUNDERSTORMS WERE FORMING RAPIDLY IN ERATH COUNTY...ABOUT 60 MILES SOUTHWEST OF FORT WORTH. THIS STORM COMPLEX WAS PART OF A ZONE OF DEVELOPING THUNDERSTORMS THAT EXTENDED NORTH INTO OKLAHOMA. THESE STORMS WERE FORMING AHEAD OF A DRY LINE WHICH HAD ADVANCED EAST TO NEAR A CHILDRESS-COLEMAN LINE AT 3 PM. FURTHERMORE...THE OLD OUTFLOW BOUNDARY...SITUATED NEAR A JACKSBORO-FORT WORTH-TYLER LINE COULD SERVE TO HELP INTENSIFY STORMS THAT APPROACH FROM THE WEST. STORMS SPOTTERS AND EMERGENCY PREPAREDNESS OFFICIALS SHOULD PREPARE FOR LATE AFTERNOON/EVENING ACTIVATION. SPOTTERS IN DALLAS...TARRANT... PARKER...ERATH...HOOD...JOHNSON...WISE...PALO PINTO...AND DENTON COUNTIES CAN EXPECT ACTIVATION WITHIN THE NEXT SEVERAL HOURS.
Special weather statement, Apr 12, 3:43 PM CDT, 4 hours before
TXZ031-122145- SPECIAL WEATHER STATEMENT...CORRECTION NATIONAL WEATHER SERVICE WACO TX 342 PM CDT FRI APR 12 1991 ...TORNADO WATCH IS IN EFFECT UNTIL 1000 PM CDT FOR BELL...BOSQUE...CORYELL ...HILL AND MCLENNAN COUNTIES... AT 340 PM CDT WACO WEATHER RADAR SHOWED NO PRECIPITATION OCCURING IN CENTRAL TEXAS. HOWEVER...A VERY STRONG THUNDERSTORM WAS NOTED OVER ERATH COUNTY NEAR STEPHENVILLE. MOVEMENT WAS TO THE NORTHEAST AT 25 MPH. WHILE NO SEVERE WEATHER WAS NOTED...RESIDENTS OF CENTRAL TEXAS SHOULD BE ON THE LOOKOUT FOR DEVELOPING THUNDERSTORMS LATER THIS AFTERNOON AND EVENING. SOME OF THE STORMS WILL BE CAPABLE OF PRODUCING VERY HEAVY RAIN...STRONG GUSTY WIND...DANGEROUS LIGHTNING AND LARGE HAIL. TORNADOES WILL ALSO BE POSSIBLE IN SOME AREAS. A SURFACE FRONT AND DRYLINE CURRENTLY LOCATED TO THE WEST OF THE AREA WILL SERVE AS THE FOCUS FOR SEVERE WEATHER. THE VERTICLE WIND PROFILES ALSO< INDICATE THAT SOME OF THE STORMS WXILL HAVE THE POTENTIAL TO PRODUCE FLOODING AND FLASH FLOODING. RESIDENTS OF CENTRAL TEXAS SHOULD STAY TUNED TO NOAA WEATHER RADIO FOR FURTHER INFORMATION ON THIS POTENTIALLY DANGEROUS WEATHER SITUATION. BB
Special weather statement, Apr 12, 5:34 PM CDT, 2 hours 9 minutes before
TXZ031-122345- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WACO TX 534 PM CDT FRI APR 12 1991 ...TORNADO WATCH IN EFFECT UNTIL 1000 PM CDT FOR BELL...BOSQUE...CORYELL ...HILL AND MCLENNAN COUNTIES... AT 520 PM CDT WACO WEATHER RADAR SHOWED NO PRECIPITATION OCCURING IN CENTRAL TEXAS. HOWEVER...A VERY STRONG THUNDERSTORM WAS NOTED OVER HOOD COUNTY... JUST SOUTH OF GRANBURY. MOVEMENT WAS TO THE NORTHEAST AT 25 MPH. ALTHOUGH NO SEVERE WEATHER WAS NOTED OVER CENTRAL TEXAS RESIDENTS SHOULD BE ON THE LOOKOUT FOR THUNDERSTORMS LATER THIS AFTERNOON AND EVENING. SOME OF THE STORMS WILL BE CAPABLE OF PRODUCING VERY HEAVY RAIN...STRONG GUSTY WINDS...DANGEROUS LIGHTNING AND LARGE HAIL. TORNADOES WILL ALSO BE POSSIBLE. STAY TUNED TO NOAA WEATHER RADIO FOR LATER STATEMENTS OR POSSIBLE WARNINGS.< 07
Special weather statement, Apr 12, 7:14 PM CDT, 29 minutes before
TXZ031-130100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WACO TX 712 PM CDT FRI APR 12 1991 ...TORNADO WATCH IN EFFECT UNTIL 1000 PM CDT FOR BELL...BOSQUE...CORYELL ...HILL AND MCLENNAN COUNTIES... AT 709 PM CDT A LARGE SEVERE THUNDERSTORM WITH VERY HEAVY RAINS...STRONG DAMAGING WINDS AND HAIL WAS OVER JOHNSON COUNTY. IT WAS MOVING EAST AT 10 MILES AN HOUR. ALTHOUGH NO SEVERE WEATHER WAS NOTED OVER CENTRAL TEXAS RESIDENTS SHOULD BE ON THE LOOKOUT FOR THUNDERSTORMS LATER THIS EVENING AND TONIGHT. SOME OF THE STORMS WILL BE CAPABLE OF PRODUCING VERY HEAVY RAIN...STRONG GUSTY WINDS...DANGEROUS LIGHTNING AND LARGE HAIL. TORNADOES WILL ALSO BE POSSIBLE. STAY TUNED TO NOAA WEATHER RADIO FOR LATER STATEMENTS OR POSSIBLE WARNINGS. 05
The office that day
Everything else NWS Fort Worth, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 12, 7:34 PM CDT | Flash Flood Warning | FWD | Johnson | 3 hr |
| Apr 12, 8:30 PM CDT | Tornado Warning | FWD | Johnson | 60 min |
| Apr 12, 9:10 PM CDT | Tornado Warning | FWD | Hill | 65 min |
| Apr 12, 9:30 PM CDT | Tornado Warning | FWD | Johnson | 45 min |
| Apr 12, 10:15 PM CDT | Severe Thunderstorm Warning | FWD | Johnson | 45 min |
| Apr 12, 10:16 PM CDT | Tornado Warning | FWD | Hill | 59 min |
| Apr 12, 10:27 PM CDT | Flash Flood Warning | FWD | Johnson | 3 hr |
| Apr 12, 11:04 PM CDT | Flash Flood Warning | FWD | Hill | 4 hr |
| Apr 13, 12:02 AM CDT | Tornado Warning | FWD | Hill | 43 min |
| Apr 13, 12:16 AM CDT | Flash Flood Warning | FWD | Ellis | 59 min |
| Apr 13, 9:04 AM CDT | Flash Flood Warning | FWD | Johnson, Somervell | 4 hr |
| Apr 13, 9:04 AM CDT | Flash Flood Warning | FWD | Hamilton | 4 hr |
| Apr 13, 9:17 AM CDT | Flash Flood Warning | FWD | Dallas, Tarrant | 4 hr |
| Apr 13, 10:32 AM CDT | Flash Flood Warning | FWD | Ellis | 2 hr |
| Apr 13, 10:59 AM CDT | Flash Flood Warning | FWD | Bell, Coryell, McLennan | 3 hr |
| Apr 13, 11:05 AM CDT | Flash Flood Warning | FWD | Hunt, Rockwall | 3 hr |
| Apr 13, 11:56 AM CDT | Severe Thunderstorm Warning | FWD | Bell | 64 min |
| Apr 13, 12:16 PM CDT | Severe Thunderstorm Warning | FWD | Ellis | 31 min |
| Apr 13, 12:18 PM CDT | Flash Flood Warning | FWD | Falls, Limestone | 3 hr |
| Apr 13, 1:04 PM CDT | Flash Flood Warning | FWD | Bell, Coryell, Falls, Hill, Limestone, McLennan | 3 hr |
| Apr 13, 1:06 PM CDT | Tornado Warning | FWD | Red River | 54 min |
| Apr 13, 4:47 PM CDT | Severe Thunderstorm Warning | FWD | Brazos, Robertson | 58 min |
| Apr 13, 5:23 PM CDT | Severe Thunderstorm Warning | FWD | Leon, Madison | 52 min |
| Apr 13, 6:03 PM CDT | Severe Thunderstorm Warning | FWD | Brazos | 57 min |
| Apr 13, 6:58 PM CDT | Severe Thunderstorm Warning | FWD | Brazos | 62 min |
Nearby
Tornado Warnings in Texas, 1991Every tornado warning in 1991Tornadoes in 1991
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.