Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 419, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Aug 26, 1998, 4:02 PM CDT for Osage County, Oklahoma. It was in force for 43 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- Aug 26, 1998, 4:02 PM CDT (21:02 UTC)
- Expired
- Aug 26, 1998, 4:45 PM CDT
- In force
- 43 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Osage County, OK
The radar
The Tulsa radar (KINX), 59 km from the middle of the area, began a volume at 21:06 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.
The nearest sounding before it
Norman, OK (KOUN), launched 12:00Z, 9.0 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
- 69 J/kg
- Mixed-layer CIN
- -140 J/kg
- Mixed-layer LCL
- 1985 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- -45 m²/s²
- 0-3 km storm-relative helicity
- -13 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
589
WUUS54 KTSA 262105 RRA
SVRTUL
OKC113-262145-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
402 PM CDT WED AUG 26 1998
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR
SOUTHEASTERN OSAGE COUNTY IN NORTHEAST OKLAHOMA
* UNTIL 445 PM CDT
* AT 402 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM 9 MILES
SOUTHWEST OF AVANT...MOVING NORTHEAST AT 5 MILES PER HOUR.
* SOME LOCATIONS AFFECTED INCLUDE... WOLCO AND AVANT
HAIL TO THE SIZE OF DIMES AND WIND GUSTS TO 60 MPH CAN BE EXPECTED IN
THE WARNED AREA.
BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS AS STORMS APPROACH.
LAT...LON 3638 9626 3632 9617 3639 9601 3665 9604What 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 Aug 26, 3:38 PM CDT, 24 minutes earlier.
Area forecast discussion, Aug 26, 3:38 PM CDT, 24 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 338 PM CDT WED AUG 26 1998 PROBLEM(S) OF THE DAY: SCT CONVECTION THIS EVENING ALG KS/MO BORDERS POPS THRU ALL PDS IN THE SHORT TERM...MAIN PROBLEMS IN FIRST PD DEAL WITH MESOSCALE TRENDS WITH SCT STORMS THAT HAVE DEVELOPED ACRS THE NRN FCST AREA. WHILE THERE REMAINS SOME MIDLVL DRY AIR TO CONTEND WITH ON ANY STORMS THAT CAN GET THE CORES HIGH ENOUGH...ANYTHING STRONG THAT DEVELOPS SHOULD REMAIN ISOLD WITH MOST STORMS JUST DUMPING LOCALLY HEAVY RAINS (NOT OVERLY DIFFERENT THAN YOUR TYPICAL SUMMER PATTERN). BETTER WIND PROFILES ARE IN FACT N OF THE BORDER WHERE STORMS TEND TO LINGER A BIT LONGER...SO NO WIDESPREAD SGFNT PROBLEMS FORSEEN WITH THESE STORMS ACRS OUR FCST AREA ATTM. WIND FIELDS VERY WEAK FM MLC-FSM CLOSER TO UPR RIDGE. SHORT RANGE MODELS NOW SHOWING A BROADSCALE PATTERN SHIFT AND SUPPORT THE ECMWF/MRF CONTENTION OF THE UPR RIDGE SHIFTING EAST AND TROF DEEPENING IN THE ERN STATES (PUTTING US IN A NWLY FLOW ALOFT BY 12Z FRI). THRU THU...WE LOOK FOR MAIN SHORTWAVE ENERGY TO CONT TRANSLATING JUST N OF FCST AREA (JUST GRAZING US) AS RIDGE SHIFTS ACRS SRN ZONES. POPS WL BE TRENDED ON THE LOW SIDE WITH MOST CONVECTION FIRING NR EXPECTED OUTFLOW BNDRYS ACRS NRN FCST ZONES. AS UPR FLOW SHIFTS MORE NWLY BY FRI...EXPECT PASSING SHORTWAVES TO DRIVE FNTL BNDRY INTO ERN OK/WRN AR FRI. WHILE MODELS ARE NOT OVERLY IMPRESSIVE WITH MSTR NR BNDRY...WL CONT TO ADVERTISE AT LEAST A CHC OF RAIN FRI INTO SAT AS BNDRY SLOWLY SLIPS SWD. BY SUN AND MON...WHILE SFC BNDRY SHOULD BE S OF RED RIVER...WL CARRY SOME SLIGHT MENTION OF RAIN AS NWLY FLOW ALOFT SHOULD PERSIST AND MOST FORCING WL BE MIDLVL IN NATURE. FCSTID = 14 PRELIM NUMBERS... TUL 74 102 75 96 / 20 10 5 30 FSM 76 102 75 95 / 10 10 5 20 MLC 75 102 75 97 / 10 10 5 20 BVO 74 100 75 93 / 30 20 20 40 FYV 69 98 70 93 / 20 10 5 30 IDB 73 102 75 98 / 10 10 5 10 BYV 69 98 70 93 / 20 10 5 30 MIO 72 98 73 93 / 30 20 20 40 MKO 74 102 75 96 / 20 10 5 30 F10 74 102 75 96 / 20 10 5 30 HHW 73 102 75 98 / 10 10 5 10 .TUL... OK...NONE. AR...NONE. -------------------- EXPERIMENTAL OUTPUT: GENERAL WEATHER EXPECTED NEXT 24 HOURS: CONVECTIVE PRECIP HAZARDOUS WEATHER EXPECTED NEXT 24 HOURS: WK POTNL OF ISOLD SVR CELLS ALG KS BORDER COUNTIES OF OK THRU 02Z NGM CONFIDENCE: 7 ON A SCALE OF 0 TO 10 ETA CONFIDENCE: 7 ON A SCALE OF 0 TO 10 AVN CONFIDENCE: 5 ON A SCALE OF 0 TO 10 FCST CONFIDENCE: 8 ON A SCALE OF 0 TO 10
Nearby
Severe Thunderstorm Warnings in Oklahoma, 1998Every severe thunderstorm warning in 1998
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.