Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 157, NWS Tulsa, OK

May 5, 1998Creek County, Tulsa County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 5, 1998, 4:15 AM CDT for Creek County, Tulsa County, Oklahoma. It was in force for 60 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: May 5, 1998, 4:15 AM CDT (09:15 UTC)
Expired: May 5, 1998, 5:15 AM CDT
In force: 60 min
Issued by: NWS Tulsa, OK
Area: Whole counties

Counties Creek County, OK, Tulsa County, OK

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 5, 1:45 AM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Lamont, OK (KLMN), launched 00:00Z, 9.3 hours before the alert went out and 137 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 131 J/kg
Mixed-layer CIN: -242 J/kg
Mixed-layer LCL: 1931 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 117 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

361 
WUUS54 KTSA 050916 RRA
SVRTUL
OKC037-143-051015-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
415 AM CDT TUE MAY 5 1998

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...

  EASTERN CREEK COUNTY - NORTHEASTERN OKLAHOMA
  WESTERN TULSA COUNTY - NORTHEASTERN OKLAHOMA

* UNTIL 515 AM CDT

* AT 415 AM...STORM SPOTTERS REPORTED AND DOPPLER RADAR DETECTED A
  SEVERE THUNDERSTORM 1 MILE WEST OF KELLYVILLE...MOVING NORTHEAST AT
  15 MPH.

* SOME LOCATIONS AFFECTED INCLUDE...
  KELLYVILLE
  SAPULPA
  SAND SPRINGS

  HAIL TO THE SIZE OF QUARTERS CAN BE EXPECTED IN THE WARNED AREA.

GOLFBALL SIZED HAIL WAS REPORTED WEST OF KELLYVILLE NEAR HEYBURN
LAKE AT 400 AM.

BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS AS STORMS APPROACH.

WHEN THUNDERSTORMS APPROACH...TAKE COVER INSIDE A STURDY BUILDING.
STAY AWAY FROM WINDOWS. TO PROTECT YOURSELF FROM LIGHTNING STAY OFF
THE PHONE AND DONT USE HAND HELD ELECTRICAL APPLIANCES. MOTORISTS
SHOULD NEVER DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.


&

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 May 5, 3:20 AM CDT, 55 minutes earlier.

Area forecast discussion, May 5, 3:20 AM CDT, 55 minutes before

FPUS3 KTUL 050821
AFDTUL

EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
320 AM CDT TUE MAY 5 1998

PROBLEM OF THE DAY:
FIGURING OUT WHAT WILL HAPPEN AFTER THIS MORNING.

MODELS ARE OSEVERE THUNDERSTORM WARNING FOR...
     SOUTHEAST LINCOLN COUNTY IN CENTRAL OKLAHOMA

* UNTIL 400 AM CDT

* AT 322 AM CDT DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM NEAR
PRAGUE...MOVING EAST-NORTHEAST AT 15 MILES PER HOUR.

* LOCATIONS IN THE WARNING INCLUDE PRAGUE

HAIL UP TO THE SIZE OF GOLFBALLS AND WIND GUSTS TO AT LEAST 60 MPH ARE
LIKELY. SEEK SHELTER INDOORS...AWAY FROM WINDOWS...AND AVOID
ELECTRICAL APPLIANCES AND TELEPHONES.

LAT...LON 3547 9682 3547 9667 3567 9622 3563 9664

The office that day

Everything else NWS Tulsa, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 5, 3:19 AM CDT	Severe Thunderstorm Warning	TSA	Okfuskee	71 min
May 5, 4:23 AM CDT	Flash Flood Warning	TSA	Okfuskee	3 hr
May 5, 4:28 AM CDT	Severe Thunderstorm Warning	TSA	Okfuskee, Okmulgee	62 min
May 5, 4:48 AM CDT	Severe Thunderstorm Warning	TSA	McIntosh	72 min
May 5, 5:05 AM CDT	Severe Thunderstorm Warning	TSA	Rogers, Tulsa, Wagoner	40 min
May 5, 5:27 AM CDT	Severe Thunderstorm Warning	TSA	Okmulgee	33 min
May 5, 5:41 AM CDT	Flash Flood Warning	TSA	McIntosh, Okmulgee	109 min
May 5, 5:53 AM CDT	Severe Thunderstorm Warning	TSA	Okfuskee	37 min
May 5, 6:15 AM CDT	Severe Thunderstorm Warning	TSA	Okmulgee	45 min
May 5, 6:33 AM CDT	Severe Thunderstorm Warning	TSA	McIntosh	57 min
May 5, 6:42 AM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	63 min
May 5, 7:30 AM CDT	Severe Thunderstorm Warning	TSA	Haskell, LeFlore	45 min
May 5, 7:42 AM CDT	Severe Thunderstorm Warning	TSA	Pushmataha	63 min
May 5, 9:00 AM CDT	Severe Thunderstorm Warning	TSA	Choctaw, Pushmataha	60 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1998 Every 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.