Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 472, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Nov 7, 1998, 11:58 AM CST for Cherokee County, Delaware County, Mayes County, Oklahoma. It was in force for 32 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
- Nov 7, 1998, 11:58 AM CST (17:58 UTC)
- Expired
- Nov 7, 1998, 12:30 PM CST
- In force
- 32 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Cherokee County, OK, Delaware County, OK, Mayes County, OK
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 6.0 hours before the alert went out and 133 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1431 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 78 m²/s²
- 0-3 km storm-relative helicity
- 90 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KTUL 071758 RRA
SVRTUL
OKC021-041-097-071830-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
1158 AM CST SAT NOV 7 1998
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR
MAYES COUNTY IN OKLAHOMA
CHEROKEE COUNTY IN OKLAHOMA
DELAWARE COUNTY IN OKLAHOMA
* UNTIL 1230 PM CST
* AT 1158 AM CST RADAR INDICATED A SEVERE THUNDERSTORM 4 MILES
SOUTHWEST OF PEGGS...MOVING NORTHEAST AT 30 MILES PER HOUR.
* SOME LOCATIONS AFFECTED INCLUDE... SPAVINAW...ROSE...LOCUST
GROVE...SCRAPER...PEGGS...KANSAS...TWIN OAKS...LEACH AND OAKS
HAIL TO THE SIZE OF DIMES AND WIND GUSTS TO 60 MPH CAN BE EXPECTED IN
THE WARNED AREA.
LAT...LON 3621 9523 3598 9516 3617 9466 3637 9480
3638 9505What 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 Nov 7, 9:25 AM CST, 2 hours 33 minutes earlier.
Area forecast discussion, Nov 7, 9:25 AM CST, 2 hours 33 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 925 AM CST SAT NOV 7 1998 WARM AIR ADVECTION/ISENTROPIC LIFT GENERATED PRECIPITATION EXITING NORTHEAST PART OF THE AREA WITH CONVECTION...PRODUCED BY STRONG SHORT WAVE MOVING ACROSS SOUTHERN KANSAS... ENTERING NORTHWEST ZONES. AMA SOUNDING SHOWED SOME POSITIVE AREA ABOVE 750 MB UP TO NEAR 500 MB. LIGHTNING GRAPHICS SHOWING A SURPRISING AMOUNT OF LIGHTNING IN BAND OF CONVECTION MOVING EASTWARD INTO NORTHEAST OKLAHOMA EVIDENTLY TAPPING THE MEAGER SOURCE OF INSTABLILTY ALOFT. OTHER SCATTERED SHOWERS WILL CONTINUE TO MOVE NORTHEAST ACROSS SOUTHERN ZONES. ELEVATED INSTABILITY SHOULD BE LIMITED TO NORTHERN ZONES IN CLOSER VICINITY TO UPPER WAVE AND COLD AIR ALOFT. UPDATED ZONES TO UP POPS TO CATEGORICAL IN NORTHERN PART OF THE AREA AND LEFT LIKELY POPS IN THE SOUTH. MENTIONED THUNDER OVER NORTHERN ZONES AS WELL. BACK EDGE OF PRECIP AND DRY SLOT WRAPPING INTO UPPER SYSTEM CURRENTLY MOVING INTO NORTHWEST OKLAHOMA. EXPECT THIS TO CONT TO MOVE EAST AND SHOULD CUT MOST OF PRECIP OFF BY THIS EVENING. DIDN'T MAKE ANY CHANGES TO LATER PERIODS IN UPDATE...WITH LOW POPS LEFT MAINLY IN FAR EASTERN ZONES THIS EVENING. /13 .TUL... OK...NONE. AR...NONE.
In the hours before
Special weather statement, Nov 7, 6:00 AM CST, 5 hours 58 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-081200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 600 AM CST SAT NOV 7 1998 NO SEVERE THUNDERSTORMS OR OTHER HAZARDOUS WEATHER ARE EXPECTED ACROSS EASTERN OKLAHOMA OR NORTHWEST ARKANSAS THROUGH TONIGHT. PATCHY RAIN HAS DEVELOPED IN ADVANCE OF AN UPPER LEVEL DISTURBANCE THAT WILL MOVE FROM THE SOUTHERN ROCKIES ACROSS THE PLAINS TODAY AND EARLY TONIGHT. THE THREAT OF RAIN WILL CONTINUE OVER EASTERN OKLAHOMA AND NORTHWEST ARKANSAS THROUGH THE DAY...HOWEVER THE ATMOSPHERE IS EXPECTED TO REMAIN TO COOL AND TO STABLE FOR THE DEVELOPMENT OF THUNDERSTORMS. THE RAIN WILL DIMINISH BY THIS EVENING OR EARLY TONIGHT OVER THE AREA AS THIS SYSTEM PASSES BY. THIS OUTLOOK IS INTENDED TO PROVIDE GUIDANCE TO EMERGENCY MANAGEMENT AGENCIES AND STORM SPOTTER GROUPS CONCERNING TORNADOES...SEVERE THUNDERSTORMS...HIGH WIND EVENTS...FLOODING AND WINTER WEATHER. INFORMATION CONCERNING OTHER HAZARDS CAN BE FOUND IN OTHER PRODUCTS ISSUED BY THE NATIONAL WEATHER SERVICE OFFICE IN TULSA.
Special weather statement, Nov 7, 6:00 AM CST, 5 hours 58 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-081200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 600 AM CST SAT NOV 7 1998 NO SEVERE THUNDERSTORMS OR OTHER HAZARDOUS WEATHER ARE EXPECTED ACROSS EASTERN OKLAHOMA OR NORTHWEST ARKANSAS THROUGH TONIGHT. PATCHY RAIN HAS DEVELOPED IN ADVANCE OF AN UPPER LEVEL DISTURBANCE THAT WILL MOVE FROM THE SOUTHERN ROCKIES ACROSS THE PLAINS TODAY AND EARLY TONIGHT. THE THREAT OF RAIN WILL CONTINUE OVER EASTERN OKLAHOMA AND NORTHWEST ARKANSAS THROUGH THE DAY...HOWEVER THE ATMOSPHERE IS EXPECTED TO REMAIN TO COOL AND TO STABLE FOR THE DEVELOPMENT OF THUNDERSTORMS. THE RAIN WILL DIMINISH BY THIS EVENING OR EARLY TONIGHT OVER THE AREA AS THIS SYSTEM PASSES BY. THIS OUTLOOK IS INTENDED TO PROVIDE GUIDANCE TO EMERGENCY MANAGEMENT AGENCIES AND STORM SPOTTER GROUPS CONCERNING TORNADOES...SEVERE THUNDERSTORMS...HIGH WIND EVENTS...FLOODING AND WINTER WEATHER. INFORMATION CONCERNING OTHER HAZARDS CAN BE FOUND IN OTHER PRODUCTS ISSUED BY THE NATIONAL WEATHER SERVICE OFFICE IN TULSA.
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.