Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 226, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Jul 3, 1997, 7:09 PM CDT for Nowata County, Washington County, Oklahoma. It was in force for 66 min. 8 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
- Jul 3, 1997, 7:09 PM CDT (00:09 UTC)
- Expired
- Jul 3, 1997, 8:15 PM CDT
- In force
- 66 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
Counties Nowata County, OK, Washington County, OK
The radar
The Tulsa radar (KINX), 67 km from the middle of the area, began a volume at 00:09 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 |
|---|---|---|---|
| Jul 3, 7:31 PM CDT | Thunderstorm Wind 52 | Wann, OK | |
| Jul 3, 7:31 PM CDT | Hail 0.88 | Wann, OK | |
| Jul 3, 7:34 PM CDT | Hail 0.88 | Wann, OK | |
| Jul 3, 7:57 PM CDT | Hail 1 | Bartlesville, OK | |
| Jul 3, 7:58 PM CDT | Hail 1 | Dewey, OK | |
| Jul 3, 8:00 PM CDT | Hail 1 | Bartlesville, OK | |
| Jul 3, 8:07 PM CDT | Thunderstorm Wind | Bartlesville, OK | |
| Jul 3, 8:25 PM CDT | Hail 0.75 | Nowata, OK |
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 |
|---|---|---|---|
| Jul 3, 3:00 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 0.2 hours before the alert went out and 175 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
- 3487 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 1249 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 38 m²/s²
- 0-3 km storm-relative helicity
- 136 m²/s²
- Significant tornado parameter
- 1.1
- Supercell composite
- 7.2
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 Tulsa, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 3, 2:12 PM CDT, 4 hours 57 minutes earlier.
Area forecast discussion, Jul 3, 2:12 PM CDT, 4 hours 57 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 210 PM CDT THU JUL 3 1997 18Z SURFACE MAP SHOWS LOW PRESSURE OVER SOUTHWEST AND SOUTH CENTRAL KANSAS WITH A BOUNDARY EXTENDING FROM EAST CENTRAL KANSAS INTO THE OKLAHOMA PANHANDLE. ETA AND NGM IN FAIR AGREEMENT THAT THAT THE LOW WILL MOVE EAST AND PHASE WITH THE FRONT AS FRONT PUSHES SOUTHEAST IN RESPONSE TO CENTRAL PLAINS SHORTWAVE. HIGH PRESSURE WILL BUILD INTO THE AREA FOR TOMORROW AND SATURDAY BRINGING DRY WEATHER AND SEASONABLY COOL TEMPERATURES. THUNDERSTORMS EXPECTED TO DEVELOP ALONG BOUNDARY IN SOUTHEAST KANSAS LATE THIS AFTERNOON AND PUSH SOUTHEAST INTO NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS THIS EVENING AS THE FRONT PROGRESSES. SOME SEVERE STORMS POSSIBLE AS WINDS FIELDS WILL BE RELATIVELY STRONG FOR THIS TIME OF YEAR AND LARGE CAPE WILL REMAIN IN PLACE. MAIN THREAT WILL BE DAMAGING WINDS AND LARGE HAIL BUT PER SPC OUTLOOK WIND FIELD MAY SUPPORT ISOLATED SUPERCELLS. WILL GO LESSER CHANCES AND LEAVE OUT MENTION FOR SEVERE FOR SOUTHEAST OKLAHOMA AND WEST CENTRAL ARKANSAS AS DYNAMICS WILL BE WELL TO THE NORTH...THE FRONT WILL ARRIVE WELL AFTER DARK AND CAP MAY BE STRONGER. GOING FORECAST HANDLES THE SITUATION WELL AND PROBABLY WILL NOT MAKE MANY CHANGES. FWC NUMBERS LOOK REASONABLE AND PROBABLY WILL ONLY TWEAK SLIGHTLY. TUL 065/085 063/087 064 5000 FSM 070/086 063/087 064 3000 MLC 070/086 063/088 065 3000 BVO 063/084 061/086 062 5000 FYV 065/081 056/082 059 5000 IDB 073/088 065/088 066 2200 BYV 065/080 055/082 058 5000 .TUL... OK...NONE. AR...NONE. ABBAS
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 3, 7:04 PM CDT | Severe Thunderstorm Warning | TSA | Craig, Ottawa | 56 min |
| Jul 3, 7:28 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 62 min |
| Jul 3, 7:53 PM CDT | Tornado Warning | TSA | Washington | 37 min |
| Jul 3, 8:09 PM CDT | Severe Thunderstorm Warning | TSA | Pawnee | 66 min |
| Jul 3, 8:11 PM CDT | Severe Thunderstorm Warning | TSA | Craig, Nowata | 64 min |
| Jul 3, 8:26 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 64 min |
| Jul 3, 9:06 PM CDT | Severe Thunderstorm Warning | TSA | Delaware, Ottawa | 69 min |
| Jul 3, 9:13 PM CDT | Severe Thunderstorm Warning | TSA | Craig | 32 min |
| Jul 3, 10:22 PM CDT | Severe Thunderstorm Warning | TSA | Osage, Tulsa | 53 min |
| Jul 3, 10:48 PM CDT | Severe Thunderstorm Warning | TSA | Creek | 57 min |
| Jul 3, 11:13 PM CDT | Severe Thunderstorm Warning | TSA | Tulsa | 32 min |
| Jul 3, 11:19 PM CDT | Severe Thunderstorm Warning | TSA | Tulsa | 26 min |
| Jul 3, 11:23 PM CDT | Severe Thunderstorm Warning | TSA | Tulsa | 22 min |
| Jul 4, 1:54 AM CDT | Severe Thunderstorm Warning | TSA | Washington | 51 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; radar from the NEXRAD Level II archive.