Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 101, NWS Norman, OK

March 26, 2000Seminole County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Mar 26, 2000, 5:14 PM CST for Seminole County, Oklahoma. It was in force for 31 min. 4 reports 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: Mar 26, 2000, 5:14 PM CST (23:14 UTC)
Expired: Mar 26, 2000, 5:45 PM CST
In force: 31 min
Issued by: NWS Norman, OK
Area: Whole counties

County Seminole County, OK

What was reported inside it

Time	Report	Where	Remark
Mar 26, 5:15 PM CST	Hail 1.75	Cromwell, OK
Mar 26, 5:15 PM CST	Hail 1	Little, OK
Mar 26, 5:23 PM CST	Tornado F0	Cromwell, OK	This tornado developed 3 miles southwest of Cromwell and was observed by an off-duty National Weather Service meteorologist. The tornado was small and brief with no damage occurring.
Mar 26, 5:31 PM CST	Hail 1	Little, 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Mar 26, 2:30 PM CST	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 11.2 hours before the alert went out and 72 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: 739 J/kg
Mixed-layer CIN: -154 J/kg
Mixed-layer LCL: 1455 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 107 m²/s²
0-3 km storm-relative helicity: 143 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.3

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KOUN 262314
SVROKC
OKC133-262345-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORMAN OK
514 PM CST SUN MAR 26 2000

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN SEMINOLE COUNTY IN EAST CENTRAL OKLAHOMA

* UNTIL 545 PM CST

* AT 514 PM CST...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 5
  MILES NORTHEAST OF LITTLE...MOVING SOUTHEAST AT 30 MPH.

* LOCATIONS IN THE WARNING INCLUDE CROMWELL...LITTLE AND SEMINOLE

HAIL UP TO 2 INCHES IN DIAMETER AND WIND GUSTS TO AT LEAST 60 MPH 
ARE LIKELY.

$$

DLF

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 Norman, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Mar 26, 3:00 PM CST, 2 hours 14 minutes earlier.

Area forecast discussion, Mar 26, 3:00 PM CST, 2 hours 14 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
300 PM CST SUN MAR 26 2000

RATHER COMPLEX SURFACE PATTERN ACROSS THE AREA THIS AFTERNOON.
OUTFLOW BOUNDARY FROM EARLIER CONVECTION IN NORTHERN OKLAHOMA RUNS
FROM NORTH CENTRAL OKLAHOMA... INTO NORTHERN PART OF OKC METRO
AREA... AND THEN INTO EAST CENTRAL OKLAHOMA. WIND SHIFT ACROSS THE
BOUNDARY HAS BECOME LESS DEFINED... ALTHOUGH ENHANCEMENT OF CU FIELD
STILL EVIDENT NEAR THE BOUNDARY. EVEN THOUGH SURFACE WINDS HAVE BEEN
SOUTHWEST ACROSS CENTRAL AND SOUTHWEST OKLAHOMA THROUGH THE
AFTERNOON... SURFACE DEWPOINTS HAVE MIXED OUT VERY LITTLE...
IMPLYING SOME DEPTH TO THE MOISTURE. LIFTED INDICES HAVE CLIMBED TO
MINUS 10 OR MORE OVER PORTIONS OF CENTRAL OKLAHOMA. IF CONVECTION
DOES OCCUR... DEVELOPMENT OF STORMS SHOULD BE FAIRLY RAPID.
MEANWHILE... SURFACE TROUGH OVER WESTERN OKLAHOMA... WILL CONTINUE
TO PROGRESS EAST AND INTERSECT THE REMNANTS OF THE OUTFLOW BOUNDARY.
BELIEVE OPPORTUNITY FOR THUNDERSTORMS OVER CENTRAL AND NORTHERN
OKLAHOMA WILL BE PRIMARILY THROUGH THE MID EVENING HOURS...
LINGERING TO AROUND MIDNIGHT IN THE SOUTHEAST ZONES.

MEANWHILE... COLD FRONT IN SOUTHERN KANSAS IS EXPECTED TO MOVE
ACROSS THE AREA OVERNIGHT AS A STRONG UPPER WAVE DIGS INTO THE
MIDWEST. THIS WILL KICK UP NORTHERLY WINDS TONIGHT... BEFORE THEY
START TO DIMINISH BY MONDAY AFTERNOON. FEW CLOUDS EXPECTED WITH THE
FRONT ACROSS WESTERN PORTIONS OF OKLAHOMA AND NORTH TEXAS... WHILE
CLOUDS OVER THE CENTRAL AND SOUTHEAST SECTIONS SHOULD BE GENERALLY
GONE BY MONDAY MORNING. PROGRESSIVE UPPER TROUGH OFF THE BAJA COAST
IS EXPECTED TO MOVE QUICKLY EAST... BRINGING ANOTHER CHANCE OF
SHOWERS AND THUNDERSTORMS TO THE AREA ON TUESDAY. SERIES OF QUICK
MOVING WAVES FOLLOWING BEHIND WILL MAINTAIN A THREAT OF SCATTERED
SHOWERS AND THUNDERSTORMS INTO THURSDAY. MILD TEMPERATURES TO
CONTINUE INTO MID WEEK... BEFORE HIGHS COOL DOWN INTO THE 50S ON
THURSDAY.

PRELIM. NUMBERS...

FCSTID = 32
OKC   48  70  45  71 /  30   0   0  40
HBR   46  72  46  73 /   0   0   0  30
SPS   51  74  49  80 /   0   0   0  30
GAG   40  70  43  70 /   0   0   0  30
PNC   45  68  44  70 /  30   0   0  40
DUA   51  72  45  74 /  30   0   0  40

.OUN...
OK...NONE.

TX...NONE.

In the hours before

Local storm report, Mar 26, 4:05 PM CST, 1 hour 9 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
405 PM CST SUN MAR 26 2000

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

0330 PM    1 SE CHANDLER             OK   1.00 INCH HAIL
03/26/00   LINCOLN                        SPOTTER REPORT

0355 PM    1 E MEEKER                OK   1.00 INCH HAIL
03/26/00   LINCOLN                        SPOTTER REPORT

JL

Local storm report, Mar 26, 4:20 PM CST, 54 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
420 PM CST SUN MAR 26 2000

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

0405 PM    3 JE MEEKER                OK   1.75 INCH HAIL
03/26/00   LINCOLN                        HAM RADIO REPORT

JL

Local storm report, Mar 26, 4:42 PM CST, 32 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
442 PM CST SUN MAR 26 2000

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

0426 PM    PRAGUE                    OK   1.50 INCH HAIL
03/26/00   LINCOLN                        REPORTED BY FIRE DEPT.

0430 PM    2 N LITTLE                OK   1.25 INCH HAIL
03/26/00   SEMINOLE                       HAIL RZEPORTED ON I-40
                                          HAM RADIO REPORT

JL

Local storm report, Mar 26, 4:48 PM CST, 26 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
448 PM CST SUN MAR 26 2000

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

0420 PM    2 W PRAGUE                OK   2.00 INCH HAIL
03/26/00   LINCOLN                        HAIL COVERING GROUND
                                          REPORTED BY COUNTY EM

0442 PM    8 E LEXINGTON             OK   1.00 INCH HAIL
03/26/00   CLEVELAND                      REPORTED BY SPOTTER

JL

Local storm report, Mar 26, 5:01 PM CST, 13 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
501 PM CST SUN MAR 26 2000

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

0453 PM    3 E EASON                 OK   1.75 INCH HAIL
03/26/00   POTTAWATOMIE                   REPORTED BY OFF-DUTY
                                          NWS EMPLOYEE

JL

Local storm report, Mar 26, 5:07 PM CST, 7 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
507 PM CST SUN MAR 26 2000

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

0502 PM    3 (N WANETTE               OK   1.75 INCH HAIL
03/26/00   POTTAWATOMIE                   REPORTED BY SPOTTER

JL

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 26, 3:27 PM CST	Severe Thunderstorm Warning	OUN	Lincoln	48 min
Mar 26, 4:12 PM CST	Severe Thunderstorm Warning	OUN	Lincoln, Pottawatomie	48 min
Mar 26, 4:12 PM CST	Severe Thunderstorm Warning	OUN	Seminole	48 min
Mar 26, 4:13 PM CST	Severe Thunderstorm Warning	OUN	Cleveland	47 min
Mar 26, 4:35 PM CST	Tornado Warning	OUN	Seminole	40 min
Mar 26, 4:45 PM CST	Severe Thunderstorm Warning	OUN	Pottawatomie	45 min
Mar 26, 4:54 PM CST	Severe Thunderstorm Warning	OUN	Hughes	66 min
Mar 26, 5:10 PM CST	Tornado Warning	OUN	Hughes	50 min
Mar 26, 5:17 PM CST	Severe Thunderstorm Warning	OUN	Pontotoc	28 min
Mar 26, 5:41 PM CST	Severe Thunderstorm Warning	OUN	Pontotoc	34 min
Mar 26, 5:43 PM CST	Severe Thunderstorm Warning	OUN	Seminole	47 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.