Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 140, NWS Tulsa, OK

May 6, 2000Pawnee County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 6, 2000, 3:12 AM CDT for Pawnee County, Oklahoma. It was in force for 33 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, 3:12 AM CDT (08:12 UTC)
Expired: May 6, 2000, 3:45 AM CDT
In force: 33 min
Issued by: NWS Tulsa, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Pawnee County, OK

The radar

The Tulsa radar (KINX), 65 km from the middle of the area, began a volume at 08:13 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

Time	Report	Where	Remark
May 6, 3:30 AM CDT	Hail 1	Prue, OK	Quarter size hail fell at Walnut Creek State Park.

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, 8.2 hours before the alert went out and 148 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: 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 060813
SVRTUL
OKC117-060845-

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

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN PAWNEE COUNTY IN NORTHEAST OKLAHOMA
  
* UNTIL 345 AM CDT

* AT 312 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM 3 MILES NORTH OF
  WESTPORT TO 5 MILES EAST OF WESTPORT TO 8 MILES SOUTHEAST OF
  WESTPORT...MOVING EAST AT 30 MPH.

* SOME LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE...WESTPORT

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

BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS AS STORMS APPROACH.

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

LAT...LON 3625 9640 3616 9632 3612 9625 3618 9616
          3622 9620 3625 9630

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, 12 minutes earlier.

Area forecast discussion, May 6, 3:00 AM CDT, 12 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 5, 11:48 PM CDT, 3 hours 24 minutes before

PRELIMINARY LOCAL STORM REPORT...DELAYED REPORT
NATIONAL WEATHER SERVICE TULSA OK
1148 PM CDT FRI MAY 5 2000

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

0239 PM    MC ALESTER                OK    .75 INCH HAIL
05/05/00   PITTSBURG                       CIVIL DEFENSE REPORT OF
                                           DIME SIZED HAIL IN NW
                                           MCALESTER.

DRM

Local storm report, May 6, 12:18 AM CDT, 2 hours 54 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1218 AM CDT SAT MAY 6 2000

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

1206 AM    3 S COLLINSVILLE          OK    1.75 INCH HAIL
05/06/00   TULSA                           HAM RADIO REPORT OF
                                           GOLFBALL SIZED HAIL.

MANNING

Local storm report, May 6, 12:30 AM CDT, 2 hours 42 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, 2 hours 40 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, 46 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, 34 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

The office that day

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

Issued	Product	Office	Counties	Lasted
May 5, 7:58 PM CDT	Severe Thunderstorm Warning	TSA	Okmulgee, Tulsa	47 min
May 5, 8:29 PM CDT	Severe Thunderstorm Warning	TSA	Tulsa	61 min
May 5, 9:23 PM CDT	Severe Thunderstorm Warning	TSA	Tulsa	52 min
May 5, 9:30 PM CDT	Severe Thunderstorm Warning	TSA	Muskogee	60 min
May 5, 9:46 PM CDT	Severe Thunderstorm Warning	TSA	Okmulgee	59 min
May 5, 10:29 PM CDT	Severe Thunderstorm Warning	TSA	Muskogee	46 min
May 5, 11:03 PM CDT	Severe Thunderstorm Warning	TSA	Mayes	42 min
May 5, 11:59 PM CDT	Severe Thunderstorm Warning	TSA	Rogers, Tulsa	61 min
May 6, 1:46 AM CDT	Severe Thunderstorm Warning	TSA	Creek, Tulsa	59 min
May 6, 2:03 AM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	42 min
May 6, 2:20 AM CDT	Severe Thunderstorm Warning	TSA	Muskogee, Wagoner	40 min
May 6, 2:27 AM CDT	Severe Thunderstorm Warning	TSA	Rogers	48 min
May 6, 2:32 AM CDT	Severe Thunderstorm Warning	TSA	Wagoner	43 min
May 6, 2:43 AM CDT	Severe Thunderstorm Warning	TSA	Osage, Tulsa	47 min
May 6, 3:14 AM CDT	Severe Thunderstorm Warning	TSA	Mayes, Rogers	46 min
May 6, 3:21 AM CDT	Severe Thunderstorm Warning	TSA	McIntosh	54 min
May 6, 3:24 AM CDT	Severe Thunderstorm Warning	TSA	Osage, Tulsa	51 min
May 6, 3:43 AM CDT	Severe Thunderstorm Warning	TSA	Creek	47 min
May 6, 4:09 AM CDT	Severe Thunderstorm Warning	TSA	Tulsa	51 min
May 6, 4:23 AM CDT	Severe Thunderstorm Warning	TSA	Creek	52 min
May 6, 4:26 AM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	49 min
May 6, 5:00 AM CDT	Severe Thunderstorm Warning	TSA	Creek, Okmulgee, Tulsa	45 min
May 6, 5:14 AM CDT	Severe Thunderstorm Warning	TSA	Pawnee	46 min
May 6, 5:46 AM CDT	Severe Thunderstorm Warning	TSA	Muskogee, Okmulgee	44 min
May 6, 5:59 AM CDT	Severe Thunderstorm Warning	TSA	Osage	46 min
May 6, 6:22 AM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Muskogee	53 min
May 6, 6:36 AM CDT	Severe Thunderstorm Warning	TSA	Okmulgee	24 min
May 6, 7:12 AM CDT	Severe Thunderstorm Warning	TSA	Haskell, McIntosh, Muskogee	63 min
May 6, 7:12 AM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	63 min
May 6, 10:02 AM CDT	Severe Thunderstorm Warning	TSA	Haskell	43 min
May 6, 10:12 AM CDT	Severe Thunderstorm Warning	TSA	Rogers	48 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2000 Every 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.