Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 85, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Apr 7, 1998, 7:26 PM CDT for Creek County, Oklahoma. It was in force for 34 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 7, 1998, 7:26 PM CDT (00:26 UTC)
- Expired
- Apr 7, 1998, 8:00 PM CDT
- In force
- 34 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
County Creek County, OK
The nearest sounding before it
Norman, OK (KOUN), launched 00:00Z, 0.4 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
- 48 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 1997 m above ground
- 0-6 km bulk shear
- 67 kt
- 0-1 km storm-relative helicity
- 28 m²/s²
- 0-3 km storm-relative helicity
- 89 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 Tulsa, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 7, 4:00 PM CDT, 3 hours 26 minutes earlier.
Area forecast discussion, Apr 7, 4:00 PM CDT, 3 hours 26 minutes before
FPUS3 KTUL 072104 AFDTUL EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 400 PM CDT TUE APR 7 1998 LOTS OF SC ROTATING ACROSS NE OK THIS AFTERNOON HAS KEPT PM TEMPS DOWN ALONG THE KS BORDER. EXPECT THAT CLOUD COVER AND WINDS WILL DIMINISH AS THE SUN SETS. BIG QUESTION IS WHAT IS GOING TO HAPPEN WITH NEXT SYSTEM TO PIVOT ACROSS THE AREA TOMORROW. MODELS ARE SIMILAR IN MASS FIELDS...BUT PRECIP FIELDS AND GUIDANCE POPS WERE A BIT ERRATIC. FEEL THAT AIRMASS IS TOO DRY TO PRODUCE MUCH...MAY SEE QUITE A BIT OF VIRGA. WILL MENTION 20-30 POPS FOR SHRA TOMORROW. AS THIS SYSTEM MOVES EAST OF THE AREA...SFC PRESSURES START TO RISE WITH STRONG NW WINDS DEVELOPING WED NIGHT. SHOULD CONTINUE TO SEE PLENTY OF LOW-MID LEVEL MOISTURE ACROSS THE AREA THROUGH THURS MORN...ESPECIALLY OVER NRN ZONES. GOOD LOW-LEVEL CAA IS ALSO NOTED BEHIND THE SYSTEM...SO WILL GENERALLY GO AT OR BELOW THE LOWEST AVAILABLE GUIDANCE. THE EXTENDED LOOKS TO BE DRY WITH A WARMING TREND THROUGH THE WEEKEND. MRF HOLDS NEXT SYSTEM OFF TO THE WEST UNTIL EARLY NEXT WEEK. FCSTID = 19 TUL 47 65 45 62 / 10 20 0 0 FSM 50 71 46 61 / 0 30 10 0 MLC 46 70 46 62 / 0 20 0 0 BVO 44 62 42 61 / 10 20 0 0 FYV 47 68 45 59 / 0 30 0 0 IDB 53 73 49 64 / 0 30 10 0 BYV 47 68 45 59 / 0 30 0 0 MIO 45 63 43 57 / 10 20 0 0 MKO 47 65 45 62 / 10 20 0 0 F10 47 65 45 62 / 10 20 0 0 HHW 53 73 49 64 / 0 30 10 0 .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 |
|---|---|---|---|---|
| Apr 7, 7:58 PM CDT | Severe Thunderstorm Warning | TSA | Creek, Okmulgee, Tulsa | 32 min |
| Apr 7, 8:24 PM CDT | Severe Thunderstorm Warning | TSA | Muskogee, Wagoner | 36 min |
| Apr 7, 8:35 PM CDT | Severe Thunderstorm Warning | TSA | Creek | 40 min |
| Apr 7, 8:54 PM CDT | Severe Thunderstorm Warning | TSA | Muskogee, Wagoner | 36 min |
| Apr 7, 9:16 PM CDT | Severe Thunderstorm Warning | TSA | Creek, Tulsa | 29 min |
| Apr 7, 9:21 PM CDT | Severe Thunderstorm Warning | TSA | Cherokee | 24 min |
| Apr 7, 9:31 PM CDT | Severe Thunderstorm Warning | TSA | Wagoner | 29 min |
| Apr 7, 9:58 PM CDT | Severe Thunderstorm Warning | TSA | Wagoner | 32 min |
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.