Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 448, NWS Norman, OK

June 16, 2001Major County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jun 16, 2001, 10:10 PM CDT for Major County, Oklahoma. It was in force for 50 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: Jun 16, 2001, 10:10 PM CDT (03:10 UTC)
Expired: Jun 16, 2001, 11:00 PM CDT
In force: 50 min
Issued by: NWS Norman, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Major County, OK

The radar

The Vance AFB radar (KVNX), 57 km from the middle of the area, began a volume at 03:10 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
Jun 16, 10:25 PM CDT	Hail 1	Fairview, 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

Lamont, OK (KLMN), launched 00:00Z, 3.2 hours before the alert went out and 92 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: 2952 J/kg
Mixed-layer CIN: -71 J/kg
Mixed-layer LCL: 1667 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 82 m²/s²
0-3 km storm-relative helicity: 184 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 5.9

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KOUN 170312
SVROKC

OKC093-170400-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORMAN OK
1010 PM CDT SAT JUN 16 2001

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MAJOR COUNTY IN NORTHWEST OKLAHOMA

* UNTIL 1100 PM CDT

* AT 1010 PM CDT...DOPPLER RADAR DETECTED A SEVERE THUNDERSTORM 3   
MILES WEST OF FAIRVIEW...MOVING SOUTHEAST AT 25 MPH. DAMAGING WINDS 
...POSSIBLY EXCEEDING 75 MPH...AND HAIL TO GOLFBALL SIZE CAN BE 
EXPECTED.  IN ADDITION...LOW-LYING AREAS MAY BE FLOODED.

* LOCATIONS IN THE WARNING INCLUDE AMES...FAIRVIEW...ISABELLA AND
  ORIENTA

SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH NO ADVANCE WARNING.
MOVE IMMEDIATELY TO A STORM SHELTER... BASEMENT OR STURDY BUILDING IF
A TORNADO IS SIGHTED.

THIS IS A DANGEROUS STORM. PREPARE FOR WINDS IN EXCESS OF 75 MPH AND
VERY LARGE DAMAGING HAIL. MOVE TO A BASEMENT..~. STORM SHELTER... OR
INTERIOR ROOM AWAY FROM OUTSIDE WALLS AND WINDOWS.

LAT...LON 3638 9858 3624 9864 3611 9820 3631 9812

ANDRA

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 Jun 16, 3:00 PM CDT, 7 hours 10 minutes earlier.

Area forecast discussion, Jun 16, 3:00 PM CDT, 7 hours 10 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
300 PM CDT SAT JUN 16 2001

QUESTIONS PERSIST ON DEVELOPMENT OF CONVECTION LATE THIS AFTERNOON
AND EVENING...MAINLY ACROSS NORTHWEST AND WEST CENTRAL SECTIONS OF
OKLAHOMA. LINE OF TOWERS DEVELOPING ALONG DRYLINE ACROSS SOUTHWEST
KANSAS...INTO EASTERN OKLAHOMA PANHANDLE...DOWN INTO WEST CENTRAL
TEXAS PANHANDLE. FURTHER TO THE SOUTH AND EAST...MESOSCALE
CONFLUENCE/CONVERGENCE AXIS IS HELPING WITH THE DEVELOPMENT OF SOME
ELEVATED TCU ACROSS CENTRAL OKLAHOMA. DO NOT THINK ANYTHING WILL
COME OF MENTIONED TCU FIELD IN CENTRAL PORTIONS OF THE STATE...BUT
WILL MONITOR UNTIL ISSUANCE TIME. BASED ON OBSERVATIONS AND LATEST
ETA-KF...POPS MAY BE REQUIRED ACROSS WEST/NORTHWEST OKLAHOMA FOR
POTENTIAL ACTIVITY NEAR DRYLINE.

AFTER TONIGHT...WILL LEAVE POPS NIL UNTIL WEDNESDAY...WHEN SURFACE
BOUNDARY ACROSS KANSAS BEGINS TO NUDGE CLOSER TO AREA. ALSO...
MID/UPPER LEVEL FLOW BECOMES MORE NORTHWESTERLY. THURSDAY THRU
SATURDAY...PATTERN BECOMES FAVORABLE FOR HIGH PLAINS/LEE SLOPE
CONVECTION TO DEVELOP INTO CONVECTIVE COMPLEX AND TRAVEL INTO
WESTERN/CENTRAL PORTIONS OF OKLAHOMA AT NIGHT...LINGERING INTO THE
NEXT MORNING ACROSS THE SOUTH. FRONTAL BOUNDARY STILL EXPECTED TO
MOVE INTO AND ACROSS THE AREA WEDNESDAY AND THURSDANY...TEMPS AOB
SEASONAL NORMS ACROSS MUCH OF THE AREA FOR A FEW DAYS.

FCSTID = 11
OKC   69  93  70  94 /   0   0   0   0
HBR   69  96  70  97 /  20   0   0   0
SPS   70  96  70  97 /   0   0   0   0
GAG   68  96  69  97 /  30   0   0   0
PNC   69  95  70  97 /  10   0   0   0
DUA   67  93  70  94 /   0   0   0   0

.OUN...
OK...NONE.
TX...NONE.

In the hours before

Local storm report, Jun 16, 7:48 PM CDT, 2 hours 22 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
748 PM CDT SAT JUN 16 2001

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

0745 PM    23 NNW MOORELAND          OK   1.00 INCH HAIL
06/16/01   WOODWARD                       BROKE SOME WINDOWS ON
                                          HOUSE. RPT BY PUBLIC

CW

Local storm report, Jun 16, 7:51 PM CDT, 2 hours 19 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
751 PM CDT SAT JUN 16 2001

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

0740 PM    1 W BURLINGTON            OK   .88 INCH HAIL
06/16/01   ALFALFA                        REPORTED BY COUNTY EM

KT

Local storm report, Jun 16, 8:17 PM CDT, 1 hour 53 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
817 PM CDT SAT JUN 16 2001

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

0815 PM    17 N MOORELAND            OK   .75 INCH HAIL
06/16/01   WOODWARD                       REPORTED BY PUBLIC
                                          AT ALABASTER CAVERNS
                                          STATE PARK

KT

Local storm report, Jun 16, 8:40 PM CDT, 1 hour 30 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
840 PM CDT SAT JUN 16 2001

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

0805 PM    0.H5 WSW CHEROKEE          OK   61 MPH WIND GUST
06/16/01   ALFALFA                        RECORDED BY OKLAHOMA
                                          MESONET

KT

Local storm report, Jun 16, 9:07 PM CDT, 1 hour 3 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
907 PM CDT SAT JUN 16 2001

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

0825 PM    18 NNE MOORELAND          OK   1.00 INCH HAIL
06/16/01   WOODWARD                       PUBLIC REPORT

KT

Local storm report, Jun 16, 9:46 PM CDT, 24 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
946 PM CDT SAT JUN 16 2001

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

0905 PM    3 N QUINLAN               OK   .75 INCH HAIL
06/16/01   WOODWARD                       60-65 MPH WINDS
                                          ESTIMATED ALSO
                                          PUBLIC REPORT

0920 PM    BLACKWELL                 OK   61 MPH WIND GUST
06/16/01   KAY                            MEASURED BY CABLE
                                          COMPANY

0930 PM    19 NNW CHESTER            OK   .75 INCH HAIL
06/16/01   MAJOR                          PUBLIC REPORT

0940 PM    21 S ALVA                 OK   70 MPH WIND GUST
06/16/01   WOODS                          ESTIMATED BY PUBLIC

KT

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 16, 7:12 PM CDT	Severe Thunderstorm Warning	OUN	Harper, Woods, Woodward	63 min
Jun 16, 7:40 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa	35 min
Jun 16, 8:10 PM CDT	Severe Thunderstorm Warning	OUN	Woodward	65 min
Jun 16, 9:09 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Grant	51 min
Jun 16, 9:13 PM CDT	Severe Thunderstorm Warning	OUN	Major, Woodward	62 min
Jun 16, 9:31 PM CDT	Severe Thunderstorm Warning	OUN	Woods	44 min
Jun 16, 10:00 PM CDT	Severe Thunderstorm Warning	OUN	Noble	45 min
Jun 16, 10:39 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Kingfisher	66 min
Jun 16, 11:13 PM CDT	Severe Thunderstorm Warning	OUN	Garfield	32 min
Jun 16, 11:43 PM CDT	Severe Thunderstorm Warning	OUN	Kingfisher	47 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2001 Every severe thunderstorm warning in 2001

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.