Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 436, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Oct 4, 1998, 7:44 AM CDT for Washington County, Oklahoma. It was in force for 46 min. 1 report 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
- Oct 4, 1998, 7:44 AM CDT (12:44 UTC)
- Expired
- Oct 4, 1998, 8:30 AM CDT
- In force
- 46 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
County Washington County, OK
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Oct 4, 8:04 AM CDT | Thunderstorm Wind 60 | Bartlesville Arpt, OK | A gust to 67 mph was measured by the observer at the Bartlesville Airport (BVO) at 804 AM CDT. The winds were accompanied by half-inch diameter hail from 802 to 812 AM CDT. |
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
Springfield, MO (KSGF), launched 12:00Z, 0.7 hours before the alert went out and 188 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
- 1263 J/kg
- Mixed-layer CIN
- -58 J/kg
- Mixed-layer LCL
- 699 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 78 m²/s²
- 0-3 km storm-relative helicity
- 62 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.9
The text
As transmitted, in the capitals the NWS used until 2016.
118 WUUS54 KTSA 041245 RRA SVRTUL OKC147-041330- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 744 AM CDT SUN OCT 4 1998 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WASHINGTON COUNTY IN NORTHEASTERN OKLAHOMA * UNTIL 830 AM CDT * AT 742 AM...RADAR DETECTED A SEVERE THUNDERSTORM 3 MILES SOUTHWEST OF BARTLEVILLE...MOVING NORTH NORTHEAST AT 30 MPH. * SOME LOCATIONS AFFECTED INCLUDE... BARTLESVILLE DEWEY HAIL TO THE SIZE OF DIMES AND WIND GUSTS TO 60 MPH CAN BE EXPECTED IN THE WARNED AREA. BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS AS STORMS APPROACH.
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 Oct 4, 3:55 AM CDT, 3 hours 49 minutes earlier.
Area forecast discussion, Oct 4, 3:55 AM CDT, 3 hours 49 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 355 AM CDT SUN OCT 4 1998 PROBLEM(S) OF THE DAY: POPS WILL THE CONVECTION BE SCATTERED OR NUMEROUS? SEVERE STORMS POSSIBLE LATEST RADAR IMAGERY SHOWING SHOWERS AND THUNDERSTORMS DEVELOPING ACROSS SOUTHERN PORTIONS OF THE FORECAST AREA THIS MORNING. LATEST MESONET OBS INDICATING 70 DEGREE DEWPOINTS NOW TO THE KANSAS BORDER AS WARM AIR ADVECTION REALLY KICKING IN. ALL MODELS INDICATING STRONG SYSTEM TO MOVE INTO PLAINS STATES TODAY. CHOSE THE ETA TO BASE TRACK OF SYSTEM FOR THIS FORECAST PACKAGE. SIGNIFICANT WARM AIR ADVECTION OCCURING NOW AS AREA PROFILERS SHOWING 40 TO 50 KTS AT 850 MB. 06Z SURFACE ANALYSIS SHOWED LOW OVER SOUTHEAST COLORADO WITH 70 DEGREE DEWPOINTS ACROSS THE SOUTHERN TWO THIRDS OF OKLAHOMA. 75 DEGREE DEWPOINTS HAD MADE AS FAR NORTH AS DALLAS. WARM FRONT ACROSS KS/OK BORDER SHOULD CONTINUE TO MOVE TO THE NORTH TODAY AS LOW MOVES EAST INTO PLAINS. ETA CAPES OUT AHEAD OF SYSTEM IN THE 1000 TO 2000 J/KG RANGE BY 00Z WITH LITTLE CAP. MODEL SOUNDINGS ALSO SHOWING GOOD VEERING WIND PROFILE WIHICH MAY LEAD TO ROTATING STORMS THIS EVENING AS 0-3KM SRH NEAR 480 M2S2. HIGH PRECIPITAL WATERS OVER EASTERN OKLAHOMA THROUGH 48HRS AS WELL WHICH GIVEN THE RECENT RAINS COULD LEAD TO ADDITIONAL FLOODING CONCERNS. AS FRONT BECOMES MORE EAST TO WEST ORIENTED AND PUSHES SOUTH ACROSS FORECAST AREA...SHOULD SEE ADDITIONAL SHOWERS AND STORMS MONDAY INTO TUESDAY. HOWIESON FCSTID = 44 TUL 83 67 76 62 / 50 50 40 40 FSM 83 65 77 62 / 50 50 50 50 MLC 85 68 77 64 / 50 50 50 40 BVO 81 63 75 59 / 50 40 30 40 FYV 80 65 77 62 / 50 60 60 50 IDB 88 69 78 66 / 40 40 40 40 BYV 80 65 77 62 / 50 60 60 50 MIO 81 63 75 58 / 50 50 50 40 MKO 85 68 77 64 / 50 50 50 40 F10 83 67 76 62 / 50 50 40 40 HHW 88 69 78 66 / 40 40 40 40 .TUL... OK...NONE. AR...NONE. -------------------- EXPERIMENTAL OUTPUT: GENERAL WEATHER EXPECTED NEXT 24 HOURS: CONVECTIVE PRECIP HAZARDOUS WEATHER EXPECTED NEXT 24 HOURS: CHANCE SEVERE THUNDERSTORMS NGM CONFIDENCE: 6 ON A SCALE OF 0 TO 10 ETA CONFIDENCE: 7 ON A SCALE OF 0 TO 10 AVN CONFIDENCE: 6 ON A SCALE OF 0 TO 10 FCST CONFIDENCE: 7 ON A SCALE OF 0 TO 10
In the hours before
Special weather statement, Oct 4, 6:00 AM CDT, 1 hour 44 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-051200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK...CORRECTED NATIONAL WEATHER SERVICE TULSA OK 600 AM CDT SUN OCT 4 1998 A FEW SEVERE THUNDERSTORMS ARE EXPECTED ACROSS NORTHEAST OKLAHOMA LATER TODAY AND TONIGHT. A FEW SEVERE THUNDERSTORMS ARE ALSO POSSIBLE OVER SOUTHEAST OKLAHOMA AND NORTHWEST ARKANSAS MAINLY AFTER MIDNIGHT. EARLY THIS MORNING A DEVELOPING SURFACE LOW PRESSURE SYSTEM WAS LOCATED IN EASTERN COLORADO WITH A WARM FRONT EXTENDING TO THE EAST NEAR THE OKLAHOMA AND KANSAS STATE LINE. DURING THE DAY TODAY THE LOW PRESSURE SYSTEM WILL BE MOVING TO THE NORTHEAST WHILE THE WARM FRONT LIFTS NORTHWARD. MEANWHILE A DRYLINE WILL BE DEVELOPING OVER WESTERN KANSAS AND WESTERN OKLAHOMA. WARM MOIST AIR WILL REMAIN IN PLACE OVER EASTERN OKLAHOMA AND NORTHWEST ARKANSAS THROUGH THE DAY TODAY...AND THE ATMOSPHERE WILL ALSO BECOME INCREASINGLY UNSTABLE. THIS WILL RESULT IN THE POSSIBILITY OF A FEW SHOWERS AND THUNDERSTORMS THROUGH THE DAY...HOWEVER THE MAIN THREAT FOR SEVERE WEATHER OVER EASTERN OKLAHOMA AND NORTHWEST ARKANSAS WILL OCCUR FROM THIS EVENING ON INTO THE NIGHTTIME HOURS. THE WARM FRONT TO THE NORTH AND THE DRYLINE TO THE WEST ARE EXPECTED TO BE THE MAIN FOCUS FOR THE DEVELOPMENT OF SEVERE THUNDERSTORMS BY LATER THIS AFTERNOON AS ENERGY FROM A STRONG UPPER LEVEL STORM SYSTEM BEGINS TO MOVE FROM THE ROCKIES OUT INTO THE PLAINS. BY THIS EVENING A COLD FRONT WILL ALSO BE MOVING DOWN ACROSS KANSAS TOWARD NORTHEAST OKLAHOMA. THUNDERSTORMS THAT DEVELOP ALONG AND AHEAD OF THE DRYLINE AND COLD FRONT ARE EVENTUALLY EXPECTED TO SPREAD INTO NORTHEAST OKLAHOMA BY THIS EVENING WITH THE POSSIBILITY OF LARGE HAIL AND STRONG DAMAGING WINDS BEING THE PRIMARY THREAT. HOWEVER...THE EXPECTED VERTICAL WIND PROFILE ALSO SUGGESTS THE POTENTIAL FOR TORNADOES. DURING THE OVERNIGHT HOURS THE THREAT OF SEVERE WEATHER WILL CONTINUE TO SHIFT FURTHER TO THE SOUTH AND EAST TOWARD SOUTHEAST OKLAHOMA AND NORTHWEST ARKANSAS. THE THREAT FOR SEVERE WEATHER IN THESE AREAS WILL MOST LIKELY BE IN THE FORM OF A SQUALL LINE THAT WILL HAVE THE POTENTIAL FOR STRONG DAMAGING WINDS. 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 TULSA NATIONAL WEATHER SERVICE OFFICE.
Special weather statement, Oct 4, 6:00 AM CDT, 1 hour 44 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-051200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 600 AM CDT SAT OCT 4 1998 A FEW SEVERE THUNDERSTORMS ARE EXPECTED ACROSS NORTHEAST OKLAHOMA LATER TODAY AND TONIGHT. A FEW SEVERE THUNDERSTORMS ARE ALSO POSSIBLE OVER SOUTHEAST OKLAHOMA AND NORTHWEST ARKANSAS MAINLY AFTER MIDNIGHT. EARLY THIS MORNING A DEVELOPING SURFACE LOW PRESSURE SYSTEM WAS LOCATED IN EASTERN COLORADO WITH A WARM FRONT EXTENDING TO THE EAST NEAR THE OKLAHOMA AND KANSAS STATE LINE. DURING THE DAY TODAY THE LOW PRESSURE SYSTEM WILL BE MOVING TO THE NORTHEAST WHILE THE WARM FRONT LIFTS NORTHWARD. MEANWHILE A DRYLINE WILL BE DEVELOPING OVER WESTERN KANSAS AND WESTERN OKLAHOMA. WARM MOIST AIR WILL REMAIN IN PLACE OVER EASTERN OKLAHOMA AND NORTHWEST ARKANSAS THROUGH THE DAY TODAY...AND THE ATMOSPHERE WILL ALSO BECOME INCREASINGLY UNSTABLE. THIS WILL RESULT IN THE POSSIBILITY OF A FEW SHOWERS AND THUNDERSTORMS THROUGH THE DAY...HOWEVER THE MAIN THREAT FOR SEVERE WEATHER OVER EASTERN OKLAHOMA AND NORTHWEST ARKANSAS WILL OCCUR FROM THIS EVENING ON INTO THE NIGHTTIME HOURS. THE WARM FRONT TO THE NORTH AND THE DRYLINE TO THE WEST ARE EXPECTED TO BE THE MAIN FOCUS FOR THE DEVELOPMENT OF SEVERE THUNDERSTORMS BY LATER THIS AFTERNOON AS ENERGY FROM A STRONG UPPER LEVEL STORM SYSTEM BEGINS TO MOVE FROM THE ROCKIES OUT INTO THE PLAINS. BY THIS EVENING A COLD FRONT WILL ALSO BE MOVING DOWN ACROSS KANSAS TOWARD NORTHEAST OKLAHOMA. THUNDERSTORMS THAT DEVELOP ALONG AND AHEAD OF THE DRYLINE AND COLD FRONT ARE EVENTUALLY EXPECTED TO SPREAD INTO NORTHEAST OKLAHOMA BY THIS EVENING WITH THE POSSIBILITY OF LARGE HAIL AND STRONG DAMAGING WINDS BEING THE PRIMARY THREAT. HOWEVER...THE EXPECTED VERTICAL WIND PROFILE ALSO SUGGESTS THE POTENTIAL FOR TORNADOES. DURING THE OVERNIGHT HOURS THE THREAT OF SEVERE WEATHER WILL CONTINUE TO SHIFT FURTHER TO THE SOUTH AND EAST TOWARD SOUTHEAST OKLAHOMA AND NORTHWEST ARKANSAS. THE THREAT FOR SEVERE WEATHER IN THESE AREAS WILL MOST LIKELY BE IN THE FORM OF A SQUALL LINE THAT WILL HAVE THE POTENTIAL FOR STRONG DAMAGING WINDS. 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 TULSA NATIONAL WEATHER SERVICE OFFICE.
Special weather statement, Oct 4, 6:00 AM CDT, 1 hour 44 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-051200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK...CORRECTED NATIONAL WEATHER SERVICE TULSA OK 600 AM CDT SUN OCT 4 1998 A FEW SEVERE THUNDERSTORMS ARE EXPECTED ACROSS NORTHEAST OKLAHOMA LATER TODAY AND TONIGHT. A FEW SEVERE THUNDERSTORMS ARE ALSO POSSIBLE OVER SOUTHEAST OKLAHOMA AND NORTHWEST ARKANSAS MAINLY AFTER MIDNIGHT. EARLY THIS MORNING A DEVELOPING SURFACE LOW PRESSURE SYSTEM WAS LOCATED IN EASTERN COLORADO WITH A WARM FRONT EXTENDING TO THE EAST NEAR THE OKLAHOMA AND KANSAS STATE LINE. DURING THE DAY TODAY THE LOW PRESSURE SYSTEM WILL BE MOVING TO THE NORTHEAST WHILE THE WARM FRONT LIFTS NORTHWARD. MEANWHILE A DRYLINE WILL BE DEVELOPING OVER WESTERN KANSAS AND WESTERN OKLAHOMA. WARM MOIST AIR WILL REMAIN IN PLACE OVER EASTERN OKLAHOMA AND NORTHWEST ARKANSAS THROUGH THE DAY TODAY...AND THE ATMOSPHERE WILL ALSO BECOME INCREASINGLY UNSTABLE. THIS WILL RESULT IN THE POSSIBILITY OF A FEW SHOWERS AND THUNDERSTORMS THROUGH THE DAY...HOWEVER THE MAIN THREAT FOR SEVERE WEATHER OVER EASTERN OKLAHOMA AND NORTHWEST ARKANSAS WILL OCCUR FROM THIS EVENING ON INTO THE NIGHTTIME HOURS. THE WARM FRONT TO THE NORTH AND THE DRYLINE TO THE WEST ARE EXPECTED TO BE THE MAIN FOCUS FOR THE DEVELOPMENT OF SEVERE THUNDERSTORMS BY LATER THIS AFTERNOON AS ENERGY FROM A STRONG UPPER LEVEL STORM SYSTEM BEGINS TO MOVE FROM THE ROCKIES OUT INTO THE PLAINS. BY THIS EVENING A COLD FRONT WILL ALSO BE MOVING DOWN ACROSS KANSAS TOWARD NORTHEAST OKLAHOMA. THUNDERSTORMS THAT DEVELOP ALONG AND AHEAD OF THE DRYLINE AND COLD FRONT ARE EVENTUALLY EXPECTED TO SPREAD INTO NORTHEAST OKLAHOMA BY THIS EVENING WITH THE POSSIBILITY OF LARGE HAIL AND STRONG DAMAGING WINDS BEING THE PRIMARY THREAT. HOWEVER...THE EXPECTED VERTICAL WIND PROFILE ALSO SUGGESTS THE POTENTIAL FOR TORNADOES. DURING THE OVERNIGHT HOURS THE THREAT OF SEVERE WEATHER WILL CONTINUE TO SHIFT FURTHER TO THE SOUTH AND EAST TOWARD SOUTHEAST OKLAHOMA AND NORTHWEST ARKANSAS. THE THREAT FOR SEVERE WEATHER IN THESE AREAS WILL MOST LIKELY BE IN THE FORM OF A SQUALL LINE THAT WILL HAVE THE POTENTIAL FOR STRONG DAMAGING WINDS. 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 TULSA NATIONAL WEATHER SERVICE OFFICE.
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 4, 6:50 AM CDT | Severe Thunderstorm Warning | TSA | Osage | 55 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.