Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 93, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at May 7, 1997, 9:47 PM CDT for Custer County, Washita County, Oklahoma. It was in force for 43 min. 6 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
- May 7, 1997, 9:47 PM CDT (02:47 UTC)
- Expired
- May 7, 1997, 10:30 PM CDT
- In force
- 43 min
- Issued by
- NWS Norman, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Custer County, OK, Washita County, OK
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 7, 9:54 PM CDT | Thunderstorm Wind 65 | Canute, OK | Severe thunderstorm winds estimated at 75 mph blew signs down in Canute. |
| May 7, 10:00 PM CDT | Thunderstorm Wind | Arapaho, OK | Light and power poles were blown down by severe thunderstorm winds. |
| May 7, 10:20 PM CDT | Thunderstorm Wind 70 | Weatherford, OK | The 5-minute average wind speed (sustained wind) from 9:20 pm to 9:25 pm CST was measured at 52 mph at the Oklahoma Mesonet site, with a peak gust during this time of 81 mph. |
| May 7, 10:25 PM CDT | Thunderstorm Wind 67 | Weatherford, OK | The 5-minute average wind speed (sustained wind) from 9:25 pm to 9:30 pm CST was measured at 61 mph at the Oklahoma Mesonet site, with a peak gust during this time of 77 mph. |
| May 7, 10:30 PM CDT | Thunderstorm Wind 83 | Weatherford, OK | Severe thunderstorm winds up to 96 mph (measured by a local firefighter) caused widespread and heavy damage in and around Weatherford. Extensive tree, sign, limb, fence, and window damage was reported. At least 7 power poles were snapped in the Weatherford vic |
| May 7, 10:30 PM CDT | Thunderstorm Wind 55 | Weatherford, OK | The 5-minute average wind speed (sustained wind) from 9:30 pm to 9:35 pm CST was measured at 50 mph at the Oklahoma Mesonet site, with a peak gust during this time of 63 mph. |
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 7, 4:30 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Norman, OK (KOUN), launched 00:00Z, 2.8 hours before the alert went out and 147 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
- 1687 J/kg
- Mixed-layer CIN
- -24 J/kg
- Mixed-layer LCL
- 783 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 112 m²/s²
- 0-3 km storm-relative helicity
- 230 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 6.9
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 May 7, 9:20 PM CDT, 27 minutes earlier.
Area forecast discussion, May 7, 9:20 PM CDT, 27 minutes before
FPUS3 KOKC 080219 AFDOKC AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NORMAN OK 920 PM CDT WED MAY 7 1997 RATHER BUSY WITH SVR WX...BUT SEE NO IMMEDIATE NEED TO ADJUST THE ZONES. WL HAVE TO MAKE WORDING CHGS BY MDNT...AND ADJUST POPS IN NW ONCE THE MCS CLEARS THAT AREA. OTRW...EVERYTHING APPEARS TO BE PROGRESSING AS ADVERTISED. FCSTID = 23 = CMS .OKC... OK...NONE. TX...NONE.
In the hours before
Local storm report, May 7, 8:25 PM CDT, 1 hour 22 minutes before
LOCAL STORM REPORT NATIONAL WEATHER SERVICE NORMAN OK 825 PM CDT WED MAY 7 1997 TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS... DATE ....COUNTY LOCATION.... 0810 PM 12 SW ARNETT OK 0.88 INCH HAIL 05/07/97 ELLIS J
Local storm report, May 7, 8:35 PM CDT, 1 hour 12 minutes before
LOCAL STORM REPORT NATIONAL WEATHER SERVICE NORMAN OK 835 PM CDT WED MAY 7 1997 TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS... DATE ....COUNTY LOCATION.... 0736 PM 2 W DEER CREEK OK 1.00 INCH HAIL AT INTERSECTION 05/07/97 GRANT OF HWYS 11 AND 74 BZ
Local storm report, May 7, 9:00 PM CDT, 47 minutes before
LOCAL STORM REPORT NATIONAL WEATHER SERVICE NORMAN OK 900 PM CDT WED MAY 7 1997 TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS... DATE ....COUNTY LOCATION.... 0840 PM 3 SW PONCA CITY OK 1.00 INCH HAIL 5/07/97 KAY BZ
Local storm report, May 7, 9:02 PM CDT, 45 minutes before
LOCAL STORM REPORT NATIONAL WEATHER SERVICE NORMAN OK 900 PM CDT WED MAY 7 1997 TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS... DATE ....COUNTY LOCATION.... 0840 PM 3 SW PONCA CIHTY OK 1.00 INCH HAIL 5/07/97 KAY BZ
Local storm report, May 7, 9:25 PM CDT, 22 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
925 PM CDT WED MAY 7 1997
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
DATE ....COUNTY LOCATION....
0900 PM MEDFORD OK FLOODING
5/07/97 GRANT HWY 81 FROM MEDFORD NE TO
KANSAS STATE LINE CLOSED
DUE TO WATER COVERING THE
ROAD AT NUMEROUS LOCATIONS
BZLocal storm report, May 7, 9:35 PM CDT, 12 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
935 PM CDT WED MAY 7 1997
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
DATE ....COUNTY LOCATION....
0930 PM KAY COUNTY OK FLOODING
5/07/97 KAY NUMEROUS ROADS AND HIGHWAYS
FLOODED ACROSS SOUTHERN HALF
OF COUNTY.
JThe office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 7, 7:36 PM CDT | Tornado Warning | OUN | Grant, Kay | 39 min |
| May 7, 7:49 PM CDT | Severe Thunderstorm Warning | OUN | Ellis | 41 min |
| May 7, 8:10 PM CDT | Tornado Warning | OUN | Kay, Noble | 50 min |
| May 7, 8:15 PM CDT | Severe Thunderstorm Warning | OUN | Grant | 45 min |
| May 7, 8:24 PM CDT | Flash Flood Warning | OUN | Grant | 3 hr |
| May 7, 8:30 PM CDT | Severe Thunderstorm Warning | OUN | Ellis, Roger Mills | 60 min |
| May 7, 8:50 PM CDT | Tornado Warning | OUN | Kay, Noble | 40 min |
| May 7, 9:02 PM CDT | Flash Flood Warning | OUN | Kay | 3 hr |
| May 7, 9:07 PM CDT | Severe Thunderstorm Warning | OUN | Beckham | 53 min |
| May 7, 9:29 PM CDT | Severe Thunderstorm Warning | OUN | Grant, Kay | 46 min |
| May 7, 9:30 PM CDT | Severe Thunderstorm Warning | OUN | Roger Mills | 45 min |
| May 7, 10:03 PM CDT | Severe Thunderstorm Warning | OUN | Harmon | 42 min |
| May 7, 10:08 PM CDT | Severe Thunderstorm Warning | OUN | Grant | 52 min |
| May 7, 10:24 PM CDT | Tornado Warning | OUN | Harmon | 51 min |
| May 7, 10:28 PM CDT | Severe Thunderstorm Warning | OUN | Caddo, Custer, Kiowa, Washita | 62 min |
| May 7, 10:28 PM CDT | Severe Thunderstorm Warning | OUN | Blaine, Dewey | 62 min |
| May 7, 10:51 PM CDT | Severe Thunderstorm Warning | OUN | Greer, Jackson | 39 min |
| May 7, 10:55 PM CDT | Severe Thunderstorm Warning | OUN | Canadian, Grady | 50 min |
| May 7, 11:13 PM CDT | Severe Thunderstorm Warning | OUN | Kingfisher | 62 min |
| May 7, 11:35 PM CDT | Severe Thunderstorm Warning | OUN | Logan, Oklahoma | 55 min |
| May 7, 11:35 PM CDT | Severe Thunderstorm Warning | OUN | Cleveland, McClain | 55 min |
| May 7, 11:43 PM CDT | Flash Flood Warning | OUN | Noble | 3 hr |
| May 8, 4:21 PM CDT | Severe Thunderstorm Warning | OUN | Harmon, Jackson | 39 min |
| May 8, 5:00 PM CDT | Severe Thunderstorm Warning | OUN | Jackson, Tillman | 45 min |
| May 8, 5:44 PM CDT | Severe Thunderstorm Warning | OUN | Jackson, Tillman | 46 min |
| May 8, 6:22 PM CDT | Severe Thunderstorm Warning | OUN | Cotton | 53 min |
| May 8, 6:28 PM CDT | Severe Thunderstorm Warning | OUN | Tillman | 47 min |
| May 8, 4:47 PM CDT | Severe Thunderstorm Warning | OUN | Baylor, Foard, Knox | 43 min |
| May 8, 5:30 PM CDT | Severe Thunderstorm Warning | OUN | Baylor, Knox | 45 min |
| May 8, 6:14 PM CDT | Severe Thunderstorm Warning | OUN | Baylor, Knox | 46 min |
| May 8, 6:35 PM CDT | Severe Thunderstorm Warning | OUN | Foard | 40 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 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.