Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 60, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Mar 29, 1997, 8:50 PM CST for Creek County, Oklahoma. It was in force for 55 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
- Mar 29, 1997, 8:50 PM CST (02:50 UTC)
- Expired
- Mar 29, 1997, 9:45 PM CST
- In force
- 55 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
County Creek County, OK
The radar
The Tulsa radar (KINX), 79 km from the middle of the area, began a volume at 02:49 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 |
|---|---|---|---|
| Mar 29, 9:30 PM CST | Hail 1 | Bristow, OK | |
| Mar 29, 9:30 PM CST | Thunderstorm Wind 61 | Bristow, 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 nearest sounding before it
Norman, OK (KOUN), launched 00:00Z, 2.8 hours before the alert went out and 120 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
- 132 J/kg
- Mixed-layer CIN
- -180 J/kg
- Mixed-layer LCL
- 2545 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 91 m²/s²
- 0-3 km storm-relative helicity
- 291 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
784 WUUS1 KTUL 300250 RRA SVRTUL OKC037-300345- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 850 PM CST SAT MAR 29 1997 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 945 PM CST FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTHEAST OKLAHOMA ...CREEK COUNTY AT 850 PM...RADAR INDICATED A SEVERE THUNDERSTORM NEAR CENTRAL LINCOLN COUNTY MOVING EAST AT 40 MPH. THIS STORM WILL MOVE INTO CREEK COUNTY AFTER 900 PM. SHAMROCK...DEPEW AND BRISTOW ARE IN THE PATH OF THIS STORM. HAIL TO THE SIZE OF NICKELS AND WIND GUSTS TO 60 MPH CAN BE EXPECTED IN THE WARNED AREA.
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 Mar 29, 3:31 PM CST, 5 hours 19 minutes earlier.
Area forecast discussion, Mar 29, 3:31 PM CST, 5 hours 19 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 325 PM CST FRI MAR 28 1997 A SIGN CHANGE IN THE WEATHER IS EXPECTED FROM WHAT WE HAD TODAY. AN UPPER LEVEL TROUGH WILL PASS THROUGH THE CENTRAL AND SRN PLAINS BRINGING A COLD FRONT THROUGH THE AREA TONIGHT. A SFC LOW CURRENTLY OVER THE NE TX PANHANDLE WILL SLIDE SE INTO NRN TX TONIGHT. SFC DPS HAVE RISEN DRAMATICALLY AHEAD OF THE LOW WITH READINGS IN THE MID 60S APPROACHING DFW. EVEN THOUGH SVR WX THREAT SHOULD REMAIN MOSTLY S OF THE AREA...THERE COULD BE SOME STRONG STORMS IN SE OK/WC OK...WILL HAVE TO WATCH THIS CLOSELY! INCREASING MOISTURE HAS ALSO INCREASED THE CHANCE OF RAIN ALONG AND BEHIND THE FRONT IN AREA OF ISENTROPIC LIFT OVER THE AREA. 15Z MESOETA PRECIP FCST SHOWS THE ENTIRE AREA RECEIVING AT LEAST A TENTH BETWEEN 03Z AND 12Z WITH CLOSE TO 0.5" IN SE OK. WILL INCREASE POPS A LITTLE MORE ON THIS PKG FOR TONIGHT. AFTER FROPA...WINDS WILL PICK UP ESP WEST OF TUL AND MLC. SHOULD NOT BE OVER ADVISORY CRITERIA THOUGH. BY EASTER MORNING WINDS WILL HAVE ALREADY DECREASED OVER NE OK TO AROUND 10 MPH WITH 10-20 ELSEWHERE. SKIES SHOULD BE CLEAR WITH CLOUDS DECREASING OVER SE ZONES. H8 TEMPS FAIRLY COOL BEHIND FRONT. USING ETA GRIDDED DATA... HIGH TEMPS SHOULD ONLY BE IN THE UPPER 50S TO LOWER 60S. HAVE LEANED MAX TEMPS TOWARD COOLER FAN AND ETA. WITH CLEAR SKIES AND LIGHT WINDS SUN NIGHT HAVE GONE BELOW GUIDANCE AS MODELS USUALLY ARE MUCH TOO WARM. AVN KEEPS FAIRLY COOL H8 TEMPS IN PLACE ON MON CONTRARY TO THE TREND THE LAST FEW WEEKS WITH THE RAPID WARMUPS. AM HESITANT TO GO AS COOL AS AVN SO COMPROMISED WITH MUCH WARMER FWC. EXTENDED MODELS DISAGREE ON EVOLUTION OF UPPER TROUGH DEVELOPING OVER THE WRN US. MAY HAVE A CHANCE OF STORMS ON TUE AS S/W EJECTS OUT OF TROUGH INTO CENTRAL PLAINS AS MRF SUGGESTS. USUALLY UNRELIABLE UKMET BRINGS STG S/W INTO STN PLAINS ON THU. ECMWF OUTPUT FROM 12Z WONT BE AVAILABLE UNTIL 7PM TONIGHT. YESTERDAYS RUN KEPT SYS TO THE WEST UNTIL THU ALSO. WITH FRONT NEARBY AND DOUBT ABOUT MODEL FCSTS...WILL KEEP CHC IN FOR MOST OF MIDWEEK. /26 TUL 042/061 036/067 046 3000 FSM 047/065 033/069 039 6000 MLC 045/064 035/070 043 60:00 BVO 038/060 037/068 047 2000 FYV 040/060 030/066 040 4000 IDB 049/066 036/070 042 7100 BYV 038/059 030/065 038 4000 .TUL... OK...NONE. AR...NONE.
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 29, 9:26 PM CST | Severe Thunderstorm Warning | TSA | Okfuskee | 49 min |
| Mar 29, 9:30 PM CST | Severe Thunderstorm Warning | TSA | Okmulgee | 45 min |
| Mar 29, 9:49 PM CST | Severe Thunderstorm Warning | TSA | McIntosh, Muskogee | 56 min |
| Mar 29, 10:12 PM CST | Severe Thunderstorm Warning | TSA | Okfuskee | 33 min |
| Mar 29, 10:42 PM CST | Severe Thunderstorm Warning | TSA | McIntosh, Pittsburg | 63 min |
| Mar 29, 11:10 PM CST | Severe Thunderstorm Warning | TSA | Haskell, Sequoyah | 65 min |
| Mar 29, 11:10 PM CST | Severe Thunderstorm Warning | TSA | Adair | 65 min |
| Mar 29, 11:20 PM CST | Severe Thunderstorm Warning | TSA | Latimer, LeFlore | 55 min |
| Mar 30, 12:09 AM CST | Severe Thunderstorm Warning | TSA | LeFlore | 36 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.