Alert archive / Texas / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 427, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at Aug 17, 1997, 9:30 PM CDT for Baylor County, Knox County, Texas. It was in force for 60 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
- Aug 17, 1997, 9:30 PM CDT (02:30 UTC)
- Expired
- Aug 17, 1997, 10:30 PM CDT
- In force
- 60 min
- Issued by
- NWS Norman, OK
- Area
- Whole counties
Counties Baylor County, TX, Knox County, TX
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 17, 9:30 PM CDT | Thunderstorm Wind 52 | Benjamin, TX | |
| Aug 17, 9:30 PM CDT | Hail 0.75 | Benjamin, TX | |
| Aug 17, 9:30 PM CDT | Thunderstorm Wind 52 | Red Spgs, 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
Fort Worth, TX (KFWD), launched 00:00Z, 2.5 hours before the alert went out and 221 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
- 3976 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 1635 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- -7 m²/s²
- 0-3 km storm-relative helicity
- 30 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 Norman, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 17, 3:30 PM CDT, 6 hours earlier.
Area forecast discussion, Aug 17, 3:30 PM CDT, 6 hours before
FPUS3 KOKC 172030 AFDOKC AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NORMAN OK 330 PM CDT SUN AUG 17 1997 THE SHORT TERM CONCERNS ARE DOMINATED BY THE PRESENCE OF NUMEROUS OUTFLOW BOUNDARIES AND A COLD FRONT WHICH HAS BECOME VERY DIFFICULT TO PICK OUT. IT APPEARS AT THIS TIME THAT THE MOST LIKELY AREA FOR NEW DEVELOPMENT IS SOUTHWESTERN OKLAHOMA AND WESTERN NORTH TEXAS...DUE TO THE LONG-TERM HEATING AND THE APPROACHING BOUNDARIES. THIS AREA ALSO HAS THE BEST CHANCE OF HEAVY RAINFALL...SO WILL MENTION THAT POSSIBILITY IN THE FORECAST. RAINFALL AMOUNTS SHOULD NOT BE ENOUGH TO WARRANT A FLOOD WATCH...BUT THEY MAY COME CLOSE. TOMORROW AND TOMORROW NIGHT PRESENT SOME DIFFICULTIES AS THE MODELS DIFFER ON MID-LEVEL INFLUENCES. HAVE BASED THE FORECAST ON THE ASSUMPTION THAT THE SHORT WAVE OVER THE SOUTHWESTERN STATES WILL BEGIN TO AFFECT OUR FORECAST AREA TOMORROW. GIVEN ABUNDANT MOISTURE...THE ONCOMING SHORT WAVE...AND PROBABLY MANY EXISTING BOUNDARIES...WOULD EXPECT A GOOD CHANCE OF RAIN TO CONTINUE THROUGH TOMORROW NIGHT. SO HAVE GONE ABOVE FWC GUIDANCE...WITH HIGHEST CHANCES IN NORTH WHERE FRONTAL POSITION IS MOST LIKELY TO BE. FWC TEMPERATURE GUIDANCE SEEMS GENERALLY REASONABLE...BUT HAVE LOWERED SOME OF THE VALUES DUE TO EXPECTED PRECIPITATION AND DAYTIME CLOUDS. HAVE ADDITIONALLY LOWERED MAXIMUM TEMPERATURES IN THE NORTHWEST FOR TOMORROW AND TUESDAY BECAUSE IT APPEARS THAT THE FRONT...OR ITS REMAINS...WILL STILL BE SOUTH OF THAT AREA. TOOK THE EXTENDED FORECAST VERBATIM FROM THE FORECASTER FROM WHOM I INHERITED THE LAST HALF OF THIS SHIFT. ESSENTIALLY...WE EXPECT WEDNESDAY TO BE HOT AND DRY...THEN ANOTHER FRONT DROPS IN FROM THE NORTH ON THURSDAY AND BRINGS IN COOLER TEMPERATURES AND ANOTHER CHANCE OF RAIN THROUGH FRIDAY. FCSTID = 23 = CMS OKC 72 85 72 92 / 40 40 30 30 HBR 70 86 72 95 / 40 40 30 20 SPS 75 93 75 98 / 40 30 20 20 GAG 65 84 68 90 / 40 40 40 30 PNC 73 85 73 88 / 20 30 50 30 DUA 70 88 73 92 / 50 30 30 20 .OKC... OK...NONE. TX...NONE.
In the hours before
Local storm report, Aug 17, 6:35 PM CDT, 2 hours 55 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
635 PM CDT SUN AUG 17 1997
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
610 PM HENRIETTA TX 60 MPH WIND GUST
08/17/97 CLAY TRAILER TURNED OVER IN
HENRIETTA.
630 PM 6 N HENRIETTA TX 0.88 INCH HAIL
08/17/97 CLAY
632 PM IOWA PARK TX 0.88 INCH HAIL
08/17/97 WICHITA
SCLocal storm report, Aug 17, 6:38 PM CDT, 2 hours 52 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
635 PM CDT SUN AUG 17 1997
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
610 PM HENRIETTA TX 60 MPH WIND GUST
08/17/97 CLAY TRAILER TURNED OVER IN
HENRIETTA.
630 PM 6 N HENRIETTA TX 0.88 INCH HAIL
08/17/97 CLAY
632 PM IOWA PARK TX 0.88 INCH HAIL
08/17/97 WICHITA
SCLocal storm report, Aug 17, 6:40 PM CDT, 2 hours 50 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
640 PM CDT SUN AUG 17 1997
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
530 PM 7 NW HENRIETTA TX WIND DAMAGE
08/17/97 CLAY TRACKER TRAILER TURNED OVER ON
HWY 287.
530 PM HENRIETTA TX WIND DAMAGE
08/17/97 CLAY POWER LINES DOWN IN TOWN.
ALSO SEVERAL STREETS FLOODED
IN HENRIETTA.
636 PM WICHITA FALLS TX 68 MPH WIND GUST
08/17/97 WICHITA
640 PM LAKESIDE CITY TX 60-65 MPH WIND GUST
08/17/97 ARCHER
SCLocal storm report, Aug 17, 7:17 PM CDT, 2 hours 13 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
640 PM CDT SUN AUG 17 1997
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
530 PM 7 NW HENRIETTA TX WIND DAMAGE
08/17/97 CLAY TRACKER TRAILER TURNED OVER ON
HWY 287.
530 PM HENRIETTA TX WIND DAMAGE
08/17/97 CLAY POWER LINES DOWN IN TOWN.
ALSO SEVERAL STREETS FLOODED
IN HENRIETTA.
636 PM WICHITA FALLS TX 68 MPH WIND GUST
08/17/97 WICHITA
640 PM LAKESIDE CITY TX 60-65 MPH WIND GUST
08/17/97 ARCHER
SCLocal storm report, Aug 17, 8:55 PM CDT, 35 minutes before
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<h1 id="headline">This service is currently unavailable.</h1>
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The site you requested is temporarily down for maintenance or an unexpected outage.
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<p id="message2">
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</html>The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 11:26 PM CDT | Severe Thunderstorm Warning | OUN | Seminole | 64 min |
| Aug 18, 9:00 AM CDT | Flash Flood Warning | OUN | Kay | 3 hr |
| Aug 18, 2:03 PM CDT | Severe Thunderstorm Warning | OUN | Murray, Pontotoc | 42 min |
| Aug 18, 2:25 PM CDT | Flash Flood Warning | OUN | Murray | 3 hr |
| Aug 18, 2:43 PM CDT | Severe Thunderstorm Warning | OUN | Johnston, Pontotoc | 47 min |
| Aug 18, 3:44 PM CDT | Severe Thunderstorm Warning | OUN | Coal | 46 min |
| Aug 18, 4:55 PM CDT | Severe Thunderstorm Warning | OUN | Jefferson, Stephens | 50 min |
| Aug 18, 5:33 PM CDT | Severe Thunderstorm Warning | OUN | Canadian, Kingfisher | 42 min |
| Aug 18, 5:57 PM CDT | Severe Thunderstorm Warning | OUN | Greer, Harmon | 48 min |
| Aug 18, 6:30 PM CDT | Severe Thunderstorm Warning | OUN | Grady | 30 min |
| Aug 17, 7:00 PM CDT | Severe Thunderstorm Warning | OUN | Archer, Wichita | 30 min |
| Aug 17, 7:27 PM CDT | Severe Thunderstorm Warning | OUN | Archer | 48 min |
| Aug 17, 7:37 PM CDT | Severe Thunderstorm Warning | OUN | Foard, Wilbarger | 53 min |
| Aug 17, 7:43 PM CDT | Tornado Warning | OUN | Archer | 32 min |
| Aug 17, 7:57 PM CDT | Severe Thunderstorm Warning | OUN | Knox | 48 min |
| Aug 17, 8:14 PM CDT | Severe Thunderstorm Warning | OUN | Archer | 46 min |
| Aug 17, 8:41 PM CDT | Severe Thunderstorm Warning | OUN | Knox | 49 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.