Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 146, NWS Tulsa, OK

May 6, 2000Creek County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 6, 2000, 4:23 AM CDT for Creek County, Oklahoma. It was in force for 52 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
May 6, 2000, 4:23 AM CDT (09:23 UTC)
Expired
May 6, 2000, 5:15 AM CDT
In force
52 min
Issued by
NWS Tulsa, OK
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Creek County, OK

The radar

The Tulsa radar (KINX), 68 km from the middle of the area, began a volume at 09:25 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
May 6, 4:32 AM CDTHail 1Sapulpa, OK

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 nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 9.4 hours before the alert went out and 133 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 00:00Z on 2000-05-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 670 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Norman, OK at 00:00Z on 2000-05-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 210 square meters per square second.193958Sfc1 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
670 J/kg
Mixed-layer CIN
-193 J/kg
Mixed-layer LCL
490 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
210 m²/s²
0-3 km storm-relative helicity
302 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KTSA 060924
SVRTUL
OKC037-061015-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
423 AM CDT SAT MAY 6 2000

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN CREEK COUNTY IN NORTHEAST OKLAHOMA

* UNTIL 515 AM CDT

* AT 423 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM 12 MILES NORTHEAST
  OF SAPULPA TO 2 MILES WEST OF SAPULPA TO 12 MILES WEST OF
  KELLYVILLE...MOVING EAST AT 20 MPH.

* SOME LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE...SAPULPA...
KELLYVILLE AND KIEFER

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

THIS IS A DANGEROUS STORM. IF YOU ARE NEAR ITS PATH YOU SHOULD
PREPARE FOR VERY LARGE HAIL AND STRONG DAMAGING STRAIGHT LINE WINDS.
SEEK SHELTER IN A STURDY BUILDING AND STAY AWAY FROM WINDOWS!

CALL 1-800-722-2778 TO REPORT SEVERE WEATHER TO THE NATIONAL WEATHER
SERVICE.

LAT...LON 3606 9640 3601 9645 3595 9648 3593 9603
          3609 9604

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 6, 3:00 AM CDT, 1 hour 23 minutes earlier.

Area forecast discussion, May 6, 3:00 AM CDT, 1 hour 23 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
300 AM CDT SAT MAY 6 2000

SVR CONVECTION CURRENTLY MOVING THROUGH NE OK. MAIN THREAT FROM
THESE STORMS HAVE BEEN LARGE HAIL WITH SEVERAL REPORTS OF HAIL IN
EXCESS OF 2 INCHES IN DIAMETER. STRONG LOW LEVEL SHEAR PROFILE / MID
LEVEL LAPSE RATES HAVE HELPED MAINTAIN STORMS INTENSITY OVERNIGHT.
EXPECT HAIL THREAT TO CONTINUE THROUGH THE MORNING HOURS OVER NE OK
/ NW ARK.  WILL MENTION A FEW POSSIBLY SVR ACROSS THIS AREA. WILL
LIKELY TWEAK POPS AT ISSUANCE TIME GIVEN THE CURRENT RADAR TRENDS.

UPPER LOW WILL FINALLY LIFT NE LATER TODAY WITH IMPROVING WX
CONDITIONS. FEATURE WILL MOVE INTO THE UPPER MISS RIVER VALLEY BY
THIS EVENING.  PRECIP WILL TAPPER OFF OVER MUCH OF OK ZONES BY EARLY
AFTERNOON WITH SKIES BECOMING PARTLY CLOUDY.  WILL CONTINUE TO SEE
PRECIP CHANCE OVER NW ARK THROUGH MUCH OF THE AFTERNOON HOURS.
FORECAST AREA WILL SEE DECREASING CLOUDS TONIGHT WITH DRYING /
SUBSIDENCE BEHIND UPPER LOW/VORT.

SUNDAY TEMPS WILL WARM CONSIDERABLY UNDER SW-W FLOW IN THE LOW
LEVELS.  BELIEVE NGM A LITTLE TO WARM...HOWEVER COULD SEE TEMPS
APPROACH 90 OVER FAR NW ZONES.   NEXT SIG CHANCE FOR PRECIP STILL
LOOKS TO BE TUE AS TROUGH DIGS OUT OF THE NORTHERN PLAINS.

FCSTID = 12
TUL   80  65  88  66 /  40   0   0   0
FSM   78  64  87  66 /  50   0   0   0
MLC   81  65  88  66 /  30   0   0   0
BVO   78  64  89  68 /  50   0   0   0
FYV   76  62  87  66 /  70   0   0   0
BYV   76  62  87  66 /  70   0   0   0
MIO   76  63  87  67 /  70  20   0   0
MKO   80  65  88  66 /  40   0   0   0
F10   80  65  88  66 /  40   0   0   0
HHW   82C  66  88  67 /  30   0   0   0

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

In the hours before

Local storm report, May 6, 12:30 AM CDT, 3 hours 53 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1230 AM CDT SAT MAY 6 2000

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

12U36 AM    FORT SMITH                AR   1.00 INCH HAIL
05/6/00   SEBASTIAN                      HAM RADIO REPORT OF
                                          QUARTER SIZED HAIL.

DRM
Local storm report, May 6, 12:32 AM CDT, 3 hours 51 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1232 AM CDT SAT MAY 6 2000

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

	1208 AM    8 W CLAREMORE             OK    .88 INCH HAIL
05/06/00   ROGERS                          PUBLIC REPORT OF DIME
                                           TO NICKEL SIZED HAIL.

DRM
Local storm report, May 6, 2:26 AM CDT, 1 hour 57 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
226 AM CDT SAT MAY 6 2000

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

0159 AM    BROKEN ARROW              OK    1 INCH HAIL
05/06/00   TULSA                           QUARTER SIZED HAIL
                                           REPORTED BY OFF DUTY
                                           NWS EMPLOYEE.

0200 AM    1 S SAPULPA               OK    2.5 INCH HAIL
05/06/00   CREEK                           POLICE REPORT OF TENNIS
                                           BALL SIZED HAIL ON THE
                                           SOUTH SIDE OF SAPULPA.

0202 AM    2 N SAPULPA               OK    1 INCH HAIL
05/06/00   CREEK                           HAM RADIO REPORT OF
                                           QUARTER SIZED HAIL.

0207 AM    SAPULPA                   OK    .75 INCH; HAIL
05/06/00   CREEK                           DIME SIZED HAIL
                                           REPORTED AT THE
                                           TURNPIKE GATE IN SAPULPA.

DRM
Local storm report, May 6, 2:38 AM CDT, 1 hour 45 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
238 AM CDT SAT MAY 6 2000

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

0225 AM    SAND SPGS                 OK    .75 INCH HAIL
05/06/00   TULSA                           PUBLIC REPORT OF DIME
                                           SIZED HAIL.

DRM
Local storm report, May 6, 4:17 AM CDT, 6 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
417 AM CDT SAT MAY 6 2000

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

0150 AM    BIXBY                     OK    1 INCH HAIL
05/06/00   TULSA                           PUBLIC REPORT OF
                                           QUARTER SIZED HAIL.

0328 AM    9 NW PRYOR                OK    .75 INCH HAIL
05/06/0A0   MAYES                           EMERGENCY MANAGEMENT
                                           REPORT OF DIME SIZED
                                           HAIL.

DRM
Local storm report, May 6, 4:21 AM CDT, 2 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
421 AM CDT SAT MAY 6 2000

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

0406 AM    TULSA                     OK    2.5 INCH HAIL
05/06/00   TULSA                           PUBLIC REPORT OF TENNIS
                                           BALL SIZED HAIL ON THE
                                           NORTH SIDE OF TULSA.

DRM

The office that day

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

IssuedProductOfficeCountiesLasted
May 5, 7:58 PM CDTSevere Thunderstorm WarningTSAOkmulgee, Tulsa47 min
May 5, 8:29 PM CDTSevere Thunderstorm WarningTSATulsa61 min
May 5, 9:23 PM CDTSevere Thunderstorm WarningTSATulsa52 min
May 5, 9:30 PM CDTSevere Thunderstorm WarningTSAMuskogee60 min
May 5, 9:46 PM CDTSevere Thunderstorm WarningTSAOkmulgee59 min
May 5, 10:29 PM CDTSevere Thunderstorm WarningTSAMuskogee46 min
May 5, 11:03 PM CDTSevere Thunderstorm WarningTSAMayes42 min
May 5, 11:59 PM CDTSevere Thunderstorm WarningTSARogers, Tulsa61 min
May 6, 1:46 AM CDTSevere Thunderstorm WarningTSACreek, Tulsa59 min
May 6, 2:03 AM CDTSevere Thunderstorm WarningTSAOsage, Pawnee42 min
May 6, 2:20 AM CDTSevere Thunderstorm WarningTSAMuskogee, Wagoner40 min
May 6, 2:27 AM CDTSevere Thunderstorm WarningTSARogers48 min
May 6, 2:32 AM CDTSevere Thunderstorm WarningTSAWagoner43 min
May 6, 2:43 AM CDTSevere Thunderstorm WarningTSAOsage, Tulsa47 min
May 6, 3:12 AM CDTSevere Thunderstorm WarningTSAPawnee33 min
May 6, 3:14 AM CDTSevere Thunderstorm WarningTSAMayes, Rogers46 min
May 6, 3:21 AM CDTSevere Thunderstorm WarningTSAMcIntosh54 min
May 6, 3:24 AM CDTSevere Thunderstorm WarningTSAOsage, Tulsa51 min
May 6, 3:43 AM CDTSevere Thunderstorm WarningTSACreek47 min
May 6, 4:09 AM CDTSevere Thunderstorm WarningTSATulsa51 min
May 6, 4:26 AM CDTSevere Thunderstorm WarningTSAOsage, Pawnee49 min
May 6, 5:00 AM CDTSevere Thunderstorm WarningTSACreek, Okmulgee, Tulsa45 min
May 6, 5:14 AM CDTSevere Thunderstorm WarningTSAPawnee46 min
May 6, 5:46 AM CDTSevere Thunderstorm WarningTSAMuskogee, Okmulgee44 min
May 6, 5:59 AM CDTSevere Thunderstorm WarningTSAOsage46 min
May 6, 6:22 AM CDTSevere Thunderstorm WarningTSAMcIntosh, Muskogee53 min
May 6, 6:36 AM CDTSevere Thunderstorm WarningTSAOkmulgee24 min
May 6, 7:12 AM CDTSevere Thunderstorm WarningTSAHaskell, McIntosh, Muskogee63 min
May 6, 7:12 AM CDTSevere Thunderstorm WarningTSAPittsburg63 min
May 6, 10:02 AM CDTSevere Thunderstorm WarningTSAHaskell43 min
May 6, 10:12 AM CDTSevere Thunderstorm WarningTSARogers48 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2000Every severe thunderstorm warning in 2000

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; radar from the NEXRAD Level II archive.