Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 81, NWS Tulsa, OK

April 7, 1998Wagoner County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Apr 7, 1998, 12:25 AM CDT for Wagoner County, Oklahoma. It was in force for 50 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: Apr 7, 1998, 12:25 AM CDT (05:25 UTC)
Expired: Apr 7, 1998, 1:15 AM CDT
In force: 50 min
Issued by: NWS Tulsa, OK
Area: Whole counties

County Wagoner County, OK

What was reported inside it

Time	Report	Where	Remark
Apr 7, 12:28 AM CDT	Hail 0.88	Coweta, OK	Nickel-sized hail covered the ground

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 watch it was issued in

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

Issued	Product	Office	Lasted
Apr 6, 10:00 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 5.4 hours before the alert went out and 186 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2213 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 133 m²/s²
0-3 km storm-relative helicity: 221 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

936 
WUUS54 KTSA 070527 RRA
SVRTUL
OKC145-070615-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
1225 AM CDT TUE APR 7 1998

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 115 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN NORTHEASTERN OKLAHOMA

   ...WAGONER COUNTY


AT 1224 AM WEATHER RADAR INDICATED A SEVERE THUNDERSTORM 2 MILES
SOUTHEAST OF COWETA.  THIS STORM WAS MOVING TO THE NORTHEAST AT
35 MILES AN HOUR.

WAGONER IS IN THE PATH OF THIS STORM.

HAIL TO THE SIZE OF NICKELS AND WIND GUSTS TO 60 MPH CAN BE
EXPECTED IN THE WARNED AREA.

DURING THE STORM MOVE INDOORS AND STAY AWAY FROM WINDOWS. TO PROTECT
YOURSELF FROM LIGHTNING DO NOT USE THE TELEPHONE OR HAND HELD
ELECTRICAL APPLIANCES...UNLESS IN AN EMERGENCY. MOTORISTS SHOULD BE
ALERT FOR WATER ON ROADWAYS AND NEVER DRIVE ONTO A FLOODED 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 Apr 6, 10:25 PM CDT, 2 hours earlier.

Area forecast discussion, Apr 6, 10:25 PM CDT, 2 hours before

FPUS3 KTUL 070329
AFDTUL

EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
1025 PM CDT MON APR 6 1998

TWEAKED POPS AGAIN AND ADJUSTED WATCH HEADLINES. STORMS SHOWING SIGNS
OF PRODUCING STRONG WINDS...ONE REPORT OF 60 MPH ALREADY. WILL CLEAR
OUT COUNTIES FROM SVR WATCH FROM THE WEST AS THE LINE MOVES BY.

FCSTID = 26
TUL   52  73  50  66 /  80   0  10  40
FSM   53  78  49  71 /  80  10  10  20
MLC   53  79  51  70 /  80   0  10  20
BVO   52  73  50  66 /  80   0  10  40
FYV   54  72  46  67 /  80  10  10  40
IDB   56  82  51  74 /  50   0  10  10
BYV   54  72  46  67 /  80  10  10  40
MIO   53  74  49  66 /  80  10  10  40
MKO   55  77  54  68 /  80   0  10  30
F10   55  77  54  68 /  80   0  10  30
HHW   56  82  51  74 /  50   0  10  10

.TUL...
OK...NONE.
AR...NONE.

In the hours before

Special weather statement, Apr 6, 9:55 PM CDT, 2 hours 30 minutes before

OKZ049-053-073-075-070252-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
955 PM CDT MON APR 6 1998

TORNADO WATCH NUMBER 169 HAS BEEN REPLACED WITH A SEVERE
THUNDERSTORM WATCH IN EFFECT UNTIL 3 AM FOR THE FOLLOWING COUNTIES IN

EASTERN OKLAHOMA...
         CHOCTAW             LATIMER             PITTSBURG
         PUSHMATAHA...

PLEASE REFER TO THE LATEST AREAL OUTLINE PRODUCT /OKCSLSOK/ FOR A
LIST OF COUNTIES IN THE NEW SEVERE THUNDERSTORM WATCH.

Special weather statement, Apr 6, 9:55 PM CDT, 2 hours 30 minutes before

OKZ049-053-073-075-070252-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
955 PM CDT MON APR 6 1998

TORNADO WATCH NUMBER 169 HAS BEEN REPLACED WITH A SEVERE
THUNDERSTORM WATCH IN EFFECT UNTIL 3 AM FOR THE FOLLOWING COUNTIES IN

EASTERN OKLAHOMA...
         CHOCTAW             LATIMER             PITTSBURG
         PUSHMATAHA...

PLEASE REFER TO THE LATEST AREAL OUTLINE PRODUCT /OKCSLSOK/ FOR A
LIST OF COUNTIES IN THE NEW SEVERE THUNDERSTORM WATCH.

Local storm report, Apr 7, 12:17 AM CDT, 8 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE TULSA, OK
1217 AM CST TUE APR 07 1998

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1145 PM    SHORT                     OK   .75 INCH HAIL
04/06/98   SEQUOYAH

1145 PM    SHORT                     OK   70 MPH TSTM GUST
04/06/98   SEQUOYAH

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 6, 8:01 PM CDT	Severe Thunderstorm Warning	TSA	Osage	59 min
Apr 6, 9:02 PM CDT	Severe Thunderstorm Warning	TSA	Okfuskee	43 min
Apr 6, 9:04 PM CDT	Severe Thunderstorm Warning	TSA	Osage	41 min
Apr 6, 9:39 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Okmulgee	51 min
Apr 6, 9:39 PM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	51 min
Apr 6, 9:42 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	63 min
Apr 6, 10:29 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Pittsburg	46 min
Apr 6, 10:38 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, Muskogee	37 min
Apr 6, 10:51 PM CDT	Severe Thunderstorm Warning	TSA	Sequoyah	39 min
Apr 6, 11:04 PM CDT	Severe Thunderstorm Warning	TSA	Latimer	41 min
Apr 6, 11:08 PM CDT	Severe Thunderstorm Warning	TSA	Latimer	52 min
Apr 6, 11:11 PM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	64 min
Apr 6, 11:17 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, LeFlore	43 min
Apr 6, 11:18 PM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	57 min
Apr 6, 11:25 PM CDT	Severe Thunderstorm Warning	TSA	Adair	50 min
Apr 6, 11:32 PM CDT	Severe Thunderstorm Warning	TSA	Sequoyah	28 min
Apr 6, 11:39 PM CDT	Severe Thunderstorm Warning	TSA	Latimer, Pushmataha	36 min
Apr 6, 11:44 PM CDT	Tornado Warning	TSA	Pittsburg, Pushmataha	46 min
Apr 6, 11:54 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore	66 min
Apr 6, 11:57 PM CDT	Severe Thunderstorm Warning	TSA	Tulsa	33 min
Apr 7, 12:13 AM CDT	Severe Thunderstorm Warning	TSA	Osage	62 min
Apr 7, 12:30 AM CDT	Severe Thunderstorm Warning	TSA	Pushmataha	30 min
Apr 7, 12:51 AM CDT	Tornado Warning	TSA	LeFlore	39 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.