Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 69, NWS Tulsa, OK

April 3, 1999Osage County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Apr 3, 1999, 3:32 AM CST for Osage County, Oklahoma. It was in force for 28 min. 1 report came from 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, with what was reported inside it.

The facts

Issued: Apr 3, 1999, 3:32 AM CST (09:32 UTC)
Expired: Apr 3, 1999, 4:00 AM CST
In force: 28 min
Issued by: NWS Tulsa, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Osage County, OK

What was reported inside it

Time	Report	Where	Remark
Apr 3, 3:35 AM CST	Thunderstorm Wind	Tulsa, OK	A roof was blown off of a barn, and tree limbs were blown down.

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 3, 12:45 AM CST	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 9.5 hours before the alert went out and 177 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: 1394 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 978 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 114 m²/s²
0-3 km storm-relative helicity: 134 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 5.8

Open this sounding in Storm Lab

The text

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

999 
WUUS54 KTSA 030933 RRA
SVRTUL
OKC113-031000-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
332 AM CST SAT APR 3 1999

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR
  EASTERN OSAGE COUNTY IN NORTHEAST OKLAHOMA

* UNTIL 400 AM CST

* AT 332 AM CST SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM 4 MILES NORTHEAST OF WYNONA TO 5 MILES SOUTHWEST OF
  AVANT TO 10 MILES SOUTH OF SKIATOOK...MOVING EAST AT 20 MPH.

* SOME LOCATIONS AFFECTED INCLUDE...  SKIATOOK...BARNSDALL...
  WYNONA...AVANT AND PAWHUSKA.

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

LAT...LON 3672 9645 3641 9631 3618 9617 3618 9601
          3645 9602 3671 9602

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 3, 12:53 AM CST, 2 hours 39 minutes earlier.

Area forecast discussion, Apr 3, 12:53 AM CST, 2 hours 39 minutes before

EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
1253 AM CST SAT APR 3 1999

JUST UPDATED ZONES TO ADD NEW WW HEADLINE TO APPROPRIATE ZONES.  ALSO
INCREASED OVERNIGHT LOWS AND INCREASED POPS IN THE ZONES WITH THE
WATCH GIVEN SOLID NATURE OF THE LINE WHICH WILL APPROACH FROM THE
WEST BEFORE SUNRISE. LATEST SURFACE ANALYSIS SHOWS LARGEST PRESSURE
FALLS AND THE LOWEST LIFTED INDICES SOUTH ALONG THE RED
RIVER...THOUGH MODERATE INSTABILITIES AND PRESSURE FALLS EXTEND
NORTHEASTWARD ALL THE WAY INTO CENTRAL MO.

MORE BETWEEN 400 AND 500 AM.

FCSTID = 22

.TUL...
OK...SEVERE THUNDERSTORM WATCH UNTIL 600 AM CST SATURDAY FOR ZONES
OKZ054>056...OKTZ059>061...OKZ064>066.

AR...NONE.

In the hours before

Local storm report, Apr 3, 3:16 AM CST, 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
416 AM CST SAT APR 03 1999

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

0306 AM 4   BRISTOW                   OK   60 MPH TSTM GUST
04/03/99   CREEK

Local storm report, Apr 3, 3:18 AM CST, 14 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
418 AM CST SAT APR 03 1999

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

0306 AM :   MANNFORD                  OK   60 MPH TSTM GUST
04/03/99   CREEK

0306 AM    MANNFORD                  OK   .75 INCH HAIL
04/03/99   CREEK

Local storm report, Apr 3, 3:21 AM CST, 11 minutes before

STORM REPORT CORRECTED                ...CORRECTED FOR TIME...
NATIONAL WEATHER SERVICE TULSA, OK
321 AM CST SAT APR 03 1999

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

0306 AM    MANNFORD                  OK   60 MPH TSTM GUST
04/03/99   CREEK

0306 AM    MANNFORD                  OK   .75 INCH HAIL
04/03/99   CREEK

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 3, 2:32 AM CST	Severe Thunderstorm Warning	TSA	Creek, Osage, Pawnee	58 min
Apr 3, 3:11 AM CST	Severe Thunderstorm Warning	TSA	Okfuskee, Okmulgee, Tulsa	49 min
Apr 3, 3:11 AM CST	Severe Thunderstorm Warning	TSA	Washington	49 min
Apr 3, 3:47 AM CST	Severe Thunderstorm Warning	TSA	Muskogee, Wagoner	43 min
Apr 3, 3:47 AM CST	Severe Thunderstorm Warning	TSA	Rogers	43 min
Apr 3, 4:04 AM CST	Severe Thunderstorm Warning	TSA	Nowata, Washington	41 min
Apr 3, 4:23 AM CST	Severe Thunderstorm Warning	TSA	Craig, Mayes	37 min
Apr 3, 4:23 AM CST	Severe Thunderstorm Warning	TSA	Cherokee, Muskogee, Wagoner	37 min
Apr 3, 4:23 AM CST	Severe Thunderstorm Warning	TSA	McIntosh	37 min
Apr 3, 4:47 AM CST	Severe Thunderstorm Warning	TSA	Delaware, Ottawa	58 min
Apr 3, 5:13 AM CST	Severe Thunderstorm Warning	TSA	Latimer	62 min
Apr 3, 6:00 AM CST	Severe Thunderstorm Warning	TSA	Choctaw	45 min
Apr 3, 6:12 AM CST	Flash Flood Warning	TSA	Pushmataha	3 hr
Apr 3, 6:59 AM CST	Flash Flood Warning	TSA	Latimer, LeFlore	3 hr
Apr 3, 7:42 AM CST	Severe Thunderstorm Warning	TSA	LeFlore	48 min
Apr 3, 10:06 AM CST	Severe Thunderstorm Warning	TSA	Okfuskee	39 min
Apr 3, 10:25 AM CST	Severe Thunderstorm Warning	TSA	Pittsburg, Pushmataha	65 min
Apr 3, 11:06 AM CST	Severe Thunderstorm Warning	TSA	Latimer, Pushmataha	39 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1999 Every severe thunderstorm warning in 1999

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.