Alert archive / Oklahoma / Tornado Warnings in 1999

Tornado Warning 82, NWS Tulsa, OK

June 1, 1999McIntosh County, Muskogee County, Oklahoma

NWS Tulsa, OK issued this tornado warning at Jun 1, 1999, 6:24 PM CDT for McIntosh County, Muskogee County, Oklahoma. It was in force for 66 min. 4 reports 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: Jun 1, 1999, 6:24 PM CDT (23:24 UTC)
Expired: Jun 1, 1999, 7:30 PM CDT
In force: 66 min
Issued by: NWS Tulsa, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties McIntosh County, OK, Muskogee County, OK

What was reported inside it

Time	Report	Where	Remark
Jun 1, 6:46 PM CDT	Tornado F1	Checotah, OK	The F1 tornado described here was the first of two tornadoes to touch down in Checotah on the evening of June 1. Each tornado was spawned from the same parent thunderstorm. The first tornado travelled through a more densely populated area of Checotah and the
Jun 1, 6:50 PM CDT	Hail 1.75	Braggs, OK
Jun 1, 6:50 PM CDT	Tornado F3	Checotah, OK	The F3 tornado described here was the second of two tornadoes to touch down in the Checotah area on the evening of June 1. Both tornadoes were spawned from the same parent thunderstorm. Even though this tornado had a stronger F-rating than the first, it caus
Jun 1, 6:57 PM CDT	Tornado F2	Onapa, OK	Spotters reported a tornado touchdown in open rangeland, moving due south for about 2 miles. Along the way, this tornado killed 28 head of cattle when they were hurled into a fence line. This tornado also caused minor damage to a home near Onapa.

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
Jun 1, 3:45 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 11.4 hours before the alert went out and 194 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: 2114 J/kg
Mixed-layer CIN: -283 J/kg
Mixed-layer LCL: 1116 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 184 m²/s²
0-3 km storm-relative helicity: 178 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.7

Open this sounding in Storm Lab

The text

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

886 
WFUS54 KTSA 012328 RRA
TORTUL
OKC091-101-020030-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TULSA OK
624 PM CDT TUE JUN 1 1999

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* TORNADO WARNING FOR...
  MUSKOGEE COUNTY IN EAST CENTRAL OKLAHOMA
  NORTHEASTERN MCINTOSH COUNTY IN SOUTHEAST OKLAHOMA

* UNTIL 730 PM CDT

* AT 624 PM CDT STORM SPOTTERS REPORTED A TORNADO 3 MILES SOUTHWEST
  OF FORT GIBSON. RADAR SHOWED THIS TORNADIC STORM MOVING SOUTH AT 15
  MPH. OTHER SEVERE THUNDERSTORMS MAY DEVELOP INTO NORTHEAST         
  MCINTOSH COUNTY.

* SOME LOCATIONS NEAR THE PATH OF THIS TORNADO INCLUDE...  WEBBERS
  FALLS...FORT GIBSON...BRAGGS...KEEFETON...OKTAHA...WARNER...
  PORUM...MUSKOGEE...RENTIESVILLE AND CHECOTAH

IN ADDITION TO THE TORNADO...LARGE HAIL AND DAMAGING STRAIGHT LINE
WINDS CAN BE EXPECTED WITH THIS STORM. GO TO A SAFE PLACE NOW

IF YOU ARE IN OR NEAR THE PATH OF THIS TORNADO...TAKE COVER NOW IF
NO UNDERGROUND SHELTER IS AVAILABLE MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR. MOBILE HOMES AND VEHICLES SHOULD BE ABANDONED FOR MORE
SUBSTANTIAL SHELTER. AVOID WINDOWS

LAT...LON 3587 9519 3580 9543 3541 9574 3532 9524
          3547 9509

What forecasters said that day

The local office's own words before this tornado 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 tornado warning went out at Jun 1, 3:50 PM CDT, 2 hours 34 minutes earlier.

Area forecast discussion, Jun 1, 3:50 PM CDT, 2 hours 34 minutes before

EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
350 PM CDT TUE JUN 1 1999

PROBLEM(S) OF THE DAY:
WILL STORMS BE SUPERCELLS OR NOT?
POPS

RADAR IS NOW SHOWING CONVECTIVE INITIATION ALONG THE FRONT NEAR I-44
IN NE OK. TSRA SHOULD CONTINUE DEVELOPING SOUTHWEST ALONG THE FRONT
DURING NEXT HOUR OR TWO. WITH SUCH AN EXTREMELY UNSTABLE
ATMOSPHERE...TORNADOES ARE A POSSIBILITY WITH ANY STORM THAT
FORMS...THOUGH MORE FAVORABLE BACKED WINDS ARE IN SE OK. TEMPS IN SE
OK HAVE REACHED THE LOW 90S...SO CONVECTIVE TEMP IS NEAR AND THE CAP
SHOULD BREAK SOON. SPC HAS CALLED TO SAY THEY ARE CONSIDERING TORNADO
WATCH THERE IN NEXT HOUR OR SO. LOOKS LIKE AN ACTIVE EVENING. THE
LOGIC LAID OUT IN THE LATE MORNING DISCUSSION STILL LOOKS GOOD...SO
REFER TO THAT DISC FOR MORE SEVERE WEATHER LOGIC.

THE FRONT WILL CONTINUE TO SAG SOUTH TONIGHT TO NEAR THE RED RIVER.
AS THE FRONT SLOWS DOWN LATE TONIGHT...SOME TRAINING TSRA MAY TAKE
PLACE IN FAR SE OK.  3-HOUR FLASH FLOOD GUIDANCE VALUES DOWN THAT WAY
ARE OVER 2 INCHES...SO WILL HOLD OFF ON FLASH FLOOD WATCH FOR NOW.
EVENING SHIFT MAY WANT TO MONITOR.

AN UNSTABLE ATMOSPHERE WILL PERSIST ON WED AS THE FRONT LINGERS
AROUND THE RED RIVER. WILL INCLUDE POPS EVERYWHERE TMRW WITH THE
HIGHER POPS IN THE SOUTH WITH BETTER MOISTURE AND CONVERGENCE.

BIG UPPER TROF WILL DIG INTO THE WRN STATES AND BRING THE AREA INTO
SOUTHWEST FLOW STARTING LATE WED NGT. SHORTWAVES BEING EJECTED FROM
THE WESTERN TROF WILL LEAVE A CHANCE OF SHRA/TSRA IN THE FCST EACH
DAY FROM THU THRU SUN. THE ETA SHOWS AN MCS MOVING FROM WRN OK THRU
KS ON WED NGT. WILL HAVE HIGHER POPS IN NRN AND WRN ZNS ON WED NGT IN
CASE THE MCS ROUNDS THE TOP OF THE UPPER RIDGE AND HEADS SE INTO THE
FCST AREA. RAIN CHANCES ON SUN LOOK LIKE THE HIGHEST IN THE EXTENDED
FORECAST AS THE WEAKENING UPPER LOW FINALLY MOVES EAST OUT OF THE
SOUTHERN ROCKIES.

FCSTID = 22
TUL   65  86  69  83 /  10  20  40  30
FSM   67  88  67  88 /  40  30  20  30
MLC   65  88  70  86 /  40  30  30  30
BVO   62  86  66  82 /   5  20  50  30
FYV   60  84  62  84 /  40  20  30  30
IDB   69  87  68  88 /  40  40  20  30
BYV   60  85  62  85 /  40  20  30  30
MIO   62  85  63  83 /  30  20  30  30
MKO   65  87  68  85 /  30  30  30  30
F10   65  87  69  85 /  30  20  40  30
HHW   69  87  68  88 /  40  40  20  30

.TUL...
AR...TORNADO WATCH FROM 345 PM CDT TuesdAy UNTIL 1000 PM CDT TuesdAy
FOR ZONES ARZ001>002...ARZ010>011...ARZ019>020...ARZ029.

OK...TORNADO WATCH FROM 345 PM CDT TuesdAy UNTIL 1000 PM CDT TuesdAy
FOR ZONES OKZ057>058...OKZ061>063...OKZ065>072...OKZ074.

--------------------
EXPERIMENTAL OUTPUT:

HAZARDOUS WEATHER EXPECTED NEXT 24 HOURS: GOOD CHANCE SUPERCELL
THUNDERSTORMS
NGM CONFIDENCE:  7 ON A SCALE OF 0 TO 10
ETA CONFIDENCE:  8 ON A SCALE OF 0 TO 10
AVN CONFIDENCE:  8 ON A SCALE OF 0 TO 10
FCST CONFIDENCE: 8 ON A SCALE OF 0 TO 10

In the hours before

Local storm report, Jun 1, 5:39 PM CDT, 45 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
539 PM CDT TUE JUN 01 1999

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

0535 PM    5 W HULBERT               OK    TORNADO
06/01/99   CHEROKEE

Local storm report, Jun 1, 5:49 PM CDT, 35 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
549 PM CDT TUE JUN 01 1999

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

0547 PM    4 W HULBERT               OK    TORNADO
06/01/99   CHEROKEE                        SEVERAL LARGE TREES
                                           DOWN AT SEQUOYAH STATE
                                           PARK. TORNADO REPORTED
                                           ON THE GROUND.

Local storm report, Jun 1, 6:08 PM CDT, 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
608 PM CDT TUE JUN 01 1999

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

0608 PM    4 E FT GIBSON             OK    1.75 INCH HAIL
06/01/99   MUSKOGEE

Local storm report, Jun 1, 6:08 PM CDT, 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
608 PM CDT TUE JUN 01 1999

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

0608 PM    4 E FT GIBSON             OK    1.75 INCH HAIL
06/01/99   MUSKOGEE

Local storm report, Jun 1, 6:19 PM CDT, 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
619 PM CDT TUE JUN 01 1999

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

0618 PM    1 NE MUSKOGEE             OK    TORNADO
06/01/99   MUSKOGEE                        TORNADO REPORTED ON THE
                                           ARKANSAS RIVER NEAR THE
                                           OG&E POWER PLANT.

Local storm report, Jun 1, 6:19 PM CDT, 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
619 PM CDT TUE JUN 01 1999

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

0618 PM    1 NE MUSKOGEE             OK    TORNADO
06/01/99   MUSKOGEE                        TORNADO REPORTED ON THE
                                           ARKANSAS RIVER NEAR THE
                                           OG&E POWER PLANT.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 1, 4:32 AM CDT	Severe Thunderstorm Warning	TSA	Okfuskee	43 min
Jun 1, 4:45 AM CDT	Tornado Warning	TSA	Okfuskee	45 min
Jun 1, 5:03 AM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Okmulgee	57 min
Jun 1, 5:12 AM CDT	Tornado Warning	TSA	McIntosh	63 min
Jun 1, 5:53 AM CDT	Tornado Warning	TSA	Haskell, Pittsburg	67 min
Jun 1, 6:04 AM CDT	Severe Thunderstorm Warning	TSA	Sequoyah	41 min
Jun 1, 6:41 AM CDT	Tornado Warning	TSA	Haskell, LeFlore	64 min
Jun 1, 3:56 PM CDT	Severe Thunderstorm Warning	TSA	Delaware, Mayes	49 min
Jun 1, 4:25 PM CDT	Severe Thunderstorm Warning	TSA	Ottawa	35 min
Jun 1, 4:47 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Mayes	43 min
Jun 1, 5:06 PM CDT	Severe Thunderstorm Warning	TSA	Wagoner	39 min
Jun 1, 5:12 PM CDT	Tornado Warning	TSA	Cherokee	33 min
Jun 1, 5:36 PM CDT	Tornado Warning	TSA	Cherokee, Muskogee, Wagoner	54 min
Jun 1, 6:22 PM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	48 min
Jun 1, 6:56 PM CDT	Tornado Warning	TSA	Haskell	49 min

Nearby

Tornado Warnings in Oklahoma, 1999 Every tornado warning in 1999 Tornadoes 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.