Alert archive / Oklahoma / Tornado Warnings in 1999

Tornado Warning 83, NWS Tulsa, OK

June 1, 1999Haskell County, Oklahoma

NWS Tulsa, OK issued this tornado warning at Jun 1, 1999, 6:56 PM CDT for Haskell County, Oklahoma. It was in force for 49 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
Jun 1, 1999, 6:56 PM CDT (23:56 UTC)
Expired
Jun 1, 1999, 7:45 PM CDT
In force
49 min
Issued by
NWS Tulsa, OK
Area
Whole counties

County Haskell County, OK

What was reported inside it

TimeReportWhereRemark
Jun 1, 7:45 PM CDTThunderstorm WindKeota, OKSeveral trees were blown down over OK Hwy 9 near Keota.

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.

IssuedProductOfficeLasted
Jun 1, 3:45 PM CDTTornado WatchSPC6 hr
Jun 1, 5:00 PM CDTTornado WatchSPC5 hr

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 11.9 hours before the alert went out and 207 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-pSkew-T log-p diagram, Norman, OK at 12:00Z on 1999-06-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2114 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Norman, OK at 12:00Z on 1999-06-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 184 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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, 3 hours 6 minutes earlier.

Area forecast discussion, Jun 1, 3:50 PM CDT, 3 hours 6 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, 6:08 PM CDT, 48 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, 48 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, 37 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, 37 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, 6:47 PM CDT, 9 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
647 PM CDT TUE JUN 01 1999

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

0646 PM    CHECOTAH                  OK    TORNADO
06/01/99   MCINTOSH
Local storm report, Jun 1, 6:47 PM CDT, 9 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
647 PM CDT TUE JUN 01 1999

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

0646 PM    CHECOTAH                  OK    TORNADO
06/01/99   MCINTOSH

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 1, 4:32 AM CDTSevere Thunderstorm WarningTSAOkfuskee43 min
Jun 1, 4:45 AM CDTTornado WarningTSAOkfuskee45 min
Jun 1, 5:03 AM CDTSevere Thunderstorm WarningTSAMcIntosh, Okmulgee57 min
Jun 1, 5:12 AM CDTTornado WarningTSAMcIntosh63 min
Jun 1, 5:53 AM CDTTornado WarningTSAHaskell, Pittsburg67 min
Jun 1, 6:04 AM CDTSevere Thunderstorm WarningTSASequoyah41 min
Jun 1, 6:41 AM CDTTornado WarningTSAHaskell, LeFlore64 min
Jun 1, 3:56 PM CDTSevere Thunderstorm WarningTSADelaware, Mayes49 min
Jun 1, 4:25 PM CDTSevere Thunderstorm WarningTSAOttawa35 min
Jun 1, 4:47 PM CDTSevere Thunderstorm WarningTSACherokee, Mayes43 min
Jun 1, 5:06 PM CDTSevere Thunderstorm WarningTSAWagoner39 min
Jun 1, 5:12 PM CDTTornado WarningTSACherokee33 min
Jun 1, 5:36 PM CDTTornado WarningTSACherokee, Muskogee, Wagoner54 min
Jun 1, 6:22 PM CDTSevere Thunderstorm WarningTSAPittsburg48 min
Jun 1, 6:24 PM CDTTornado WarningTSAMcIntosh, Muskogee66 min

Nearby

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