Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 276, NWS Norman, OK

May 27, 20014 counties in Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at May 27, 2001, 9:26 PM CDT for 4 counties in Oklahoma. It was in force for 64 min. 27 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: May 27, 2001, 9:26 PM CDT (02:26 UTC)
Expired: May 27, 2001, 10:30 PM CDT
In force: 64 min
Issued by: NWS Norman, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Canadian County, OK, Kingfisher County, OK, Logan County, OK, Oklahoma County, OK

The radar

The Norman radar (KTLX), 59 km from the middle of the area, began a volume at 02:29 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 27, 9:27 PM CDT	Thunderstorm Wind	Hennessey, OK	Large trees were blown down across Highway 51.
May 27, 9:35 PM CDT	Thunderstorm Wind 56 M	Kingfisher, OK	Wind was measured by Oklahoma mesonet.
May 27, 9:40 PM CDT	Thunderstorm Wind 54 M	Kingfisher, OK	Wind was measured by Oklahoma mesonet.
May 27, 9:40 PM CDT	Thunderstorm Wind	Kingfisher, OK	Major structural damage was sustained to Chisholm Tech Center.
May 27, 9:45 PM CDT	Thunderstorm Wind 70 M	Kingfisher, OK	Wind was measured by Oklahoma mesonet.
May 27, 9:45 PM CDT	Thunderstorm Wind 52 M	El Reno, OK	Wind was measured by Oklahoma mesonet.
May 27, 9:47 PM CDT	Thunderstorm Wind 69 M	El Reno, OK
May 27, 9:48 PM CDT	Thunderstorm Wind 52 E	Piedmont, OK
May 27, 9:49 PM CDT	Thunderstorm Wind 63 M	El Reno, OK
May 27, 9:52 PM CDT	Thunderstorm Wind 61 E	Piedmont, OK
May 27, 9:59 PM CDT	Thunderstorm Wind 69 E	Piedmont, OK	The roof of the Baptist Church was damaged.
May 27, 10:00 PM CDT	Thunderstorm Wind 64 M	Kingfisher, OK	A portion of a shed roof was blown off.
May 27, 10:00 PM CDT	Thunderstorm Wind 61 E	The Vlg, OK
May 27, 10:00 PM CDT	Thunderstorm Wind 61 E	Nichols Hills, OK
May 27, 10:00 PM CDT	Thunderstorm Wind 93 M	El Reno, OK	Numerous homes sustained shingle damage on the north-facing edges.
May 27, 10:00 PM CDT	Thunderstorm Wind	Bethany, OK	The roof of the YMCA sustained significant damage. Rain then fell on the gym floor destroying it.
May 27, 10:00 PM CDT	Thunderstorm Wind	Mustang, OK	The roof partially blew off of City Hall. Rain then fell inside causing significant damage.
May 27, 10:03 PM CDT	Thunderstorm Wind 69 E	Piedmont, OK
May 27, 10:05 PM CDT	Thunderstorm Wind 82 M	Edmond, OK	Wind was measured at the Quail Springs Mall.
May 27, 10:10 PM CDT	Thunderstorm Wind 50 M	El Reno, OK	Wind was measured by Oklahoma mesonet.
May 27, 10:12 PM CDT	Thunderstorm Wind 56 E	Edmond, OK	Wind was reported at the intersection of 164th and Portland.
May 27, 10:15 PM CDT	Thunderstorm Wind 61 E	Lake Hefner, OK
May 27, 10:15 PM CDT	Thunderstorm Wind	Oklahoma City, OK	Several windows were blown out at Landmark Towers on NW 58th. Trees and power poles were also downed citywide.
May 27, 10:15 PM CDT	Thunderstorm Wind	Oklahoma City, OK	The roof was damaged at Crossroads Kitz Club. Roof debris and rain fell inside, causing significant damage.
May 27, 10:17 PM CDT	Thunderstorm Wind 69 E	Yukon, OK
May 27, 10:20 PM CDT	Thunderstorm Wind 69 E	Warr Acres, OK
May 27, 10:31 PM CDT	Thunderstorm Wind 55 M	(Okc)Will Rogers Apt, 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
May 27, 5:45 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
May 27, 9:00 PM CDT	Severe Thunderstorm Watch	SPC	2 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 2.4 hours before the alert went out and 64 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: 2894 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 1394 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: -18 m²/s²
0-3 km storm-relative helicity: 89 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.6

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 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 May 27, 8:41 PM CDT, 45 minutes earlier.

Area forecast discussion, May 27, 8:41 PM CDT, 45 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
841 PM CDT SUN MAY 27 2001

DESPITE WIDESPREAD SEVERE T-STORMS ACROSS N OK... WHICH WILL SWEEP
SE ACROSS MOST IF NOT ALL OF THE REST OF THE CWA OVERNIGHT...
PREVIOUS FORECAST PACKAGE COVERED THINGS SO WELL THAT ONLY MINOR
ADJUSTMENTS ARE NEEDED AT THIS TIME. WILL DROP THE PROBABILITY
WORDING ACROSS N AND CENTRAL OK, AND UP POPS TO LIKELY/CATEGORICAL
IN THE S, AS SOLID LINE OF CONVECTION ALONG LEADING EDGE OF MCS
ENSURES THAT NEARLY ALL AREAS WILL GET A PIECE OF THE ACTION.
STORMS AND ASSOCIATED SEVERE POTENTIAL WILL DECREASE BY OR JUST
AFTER MIDNIGHT IN THE N AS THE COMPLEX MOVES S OF THESE AREAS. MAIN
SEVERE THREAT EXPECTED TO BE DAMAGING WINDS AS THE ASSOCIATED COLD
POOL ACCELERATES SE-WARD, BUT LARGE HAIL ALSO WILL REMAIN A THREAT
WITH SOME OF THE CORES. FLASH FLOOD THREAT APPEARS TO BE LESSENING
AS THE PRIMARY CONVECTIVE LINE IS PERPENDICULAR TO THE MOTION
VECTOR, REDUCING THE THREAT OF TRAIN ECHOES. STILL NEED TO KEEP A
MENTION OF HEAVY RAINFALL, THO.

ZONE UPDATE OUT BY 9 PM. ANOTHER UPDATE WILL BE NEEDED AROUND
MIDNIGHT TO ADDRESS TEMPORAL WORDING AND UPDATE THE PROGRESS OF THE
MCS.

24

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

In the hours before

Local storm report, May 27, 6:51 PM CDT, 2 hours 35 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
651 PM CDT SUN MAY 27 2001

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

0615 PM    WOODS                     OK   1.00 INCH HAIL
05/27/01   WOODS                          CAPRON FD

0644 PM    BURLINGTON                OK   .75 =INCH HAIL
05/27/01   ALFALFA                        SPOTTER REPORT

FM

Local storm report, May 27, 9:19 PM CDT, 7 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
919 PM CDT SUN MAY 27 2001

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

0825 PM    8 S FARGO                 OK   1.00 INCH HAIL
05/27/01   ELLIS                          REPORTED BY EOC

0821 PM    4 N ENID                  OK   60 MPH WIND GUST
05/27/01   GARFIELD                       ESTIMATED BY SPOTTER

0821 PM    4 N ENID                  OK   .75 INCH HAIL
05/27/01   GARFIELD                       REPORTED BY SPOTTER

0802 PM    15 N GAGE                 OK   60 MPH WIND GUST
05/27/01   ELLIS                          ESTIMATED BY SPOTTER

0802 PM    15 N GAGE                 OK   1.00 INCH HAIL
05/27/01   ELLIS                          REPORTED BY SPOTTER

0805 PM    5 SW TANGIER              OK   60 MPH WIND GUST
05/27/01   WOODWARD                       ESTIMATED BY SPOTTER

0805 PM    1 NE FARGO                OK   60 MPH WIND GUST
05/27/01   ELLIS                          ESTIMATED BY SPOTTER

0800 PM    SHATTUCK                  OK   70 MPH WIND GUST
05/27/01   ELLIS                          ESTIMATED BY SPOTTER

0800 PM    21 NNE MOORELAND          OK   64 MPH WIND GUST
05/27/01   WOODWARD                       MEASURED BY OKLAHOMA
                                          MESONET

0755 PM    21 NNE MOORELAND          OK   65 MPH WIND GUST
05/27/01   WOODWARD                       MEASURED BY OKLAHOMA
                                          MESONET

0750 PM    21 NNE MOORELAND          OK   66 MPH WIND GUST
05/27/01   WOODWARD                       MEASURED BY OKLAHOMA
                                          MESONET

0725 PM    1 SW BUFFALO              OK   60 MPH WIND GUST
05/27/01   HARPER                         MEASURED BY OKLAHOMA
                                          MESONET

0705 PM    1 SSW CHEROKEE            OK   60 MPH WIND GUST
05/27/01   ALFALFA                        MEASURED BY OKLAHOMA
                                          MESONET

0758 PM    6 N MOORELAND             OK   60 MPH WIND GUST
05/27/01   WOODWARD                       ESTIMATED BY SPOTTER

0740 PM    21 NE MOORELAND           OK   60 MPH WIND GUST
05/27/01   WOODWARD                       MEASURED BY OKLAHOMA
                                          MESONET

0740 PM    16 NNE FREEDOM            OK   66 MPH WIND GUST
05/27/01   WOODS                          MEASURED BY OKLAHOMA
                                          MESONET

0745 PM    16 NNE FREEDOM            OK   62 MPH WIND GUST
05/27/01   WOODS                          MEASURED BY OKLAHOMA
                                          MESONET

0720 PM    BUFFALO                   OK   .75 INCH HAIL
05/27/01   HARPER                         REPORTED BY EOC

0710 PM    5 N SELMAN                OK   WIND DAMAGE
05/27/01   HARPER                         CARPORT DESTROYED AND STORM
                                          DOOR BLOWN AWAY
                                          PUBLIC REPORT

0745 PM    6 N MAY                   OK   WIND DAMAGE
05/27/01   HARPER                         POWER POLES SNAPPED AND
                                          TRACTOR TRAILER OVERTURNED
                                          REPORTED BY SPOTTER

0725 PM    2 S BUFFALO               OK   60 MPH WIND GUST
05/27/01   HARPER                         ESTIMATED BY SPOTTER

0730 PM    1 SW BUFFALO              OK   68 MPH WIND GUST
05/27/01   HARPER                         MEASURED BY OKLAHOMA
                                          MESONET

0700 PM    CHEROKEE                  OK   .88 INCH HAIL
05/27/01   ALFALFA                        REPORTED BY EOC

0721 PM    CHEROKEE                  OK   60 MPH WIND GUST
05/27/01   ALFALFA                        ESTIMATED BY EOC

0710 PM    1 SSW CHEROKEE            OK   62 MPH WIND GUST
05/27/01   ALFALFA                        MEASURED BY OKLAHOMA
                                          MESONET

LANE

The office that day

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

Issued	Product	Office	Counties	Lasted
May 27, 7:08 PM CDT	Tornado Warning	OUN	Harper	52 min
May 27, 7:26 PM CDT	Tornado Warning	OUN	Alfalfa	34 min
May 27, 7:33 PM CDT	Severe Thunderstorm Warning	OUN	Ellis, Woodward	42 min
May 27, 7:50 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Grant	55 min
May 27, 8:01 PM CDT	Severe Thunderstorm Warning	OUN	Major	44 min
May 27, 8:15 PM CDT	Severe Thunderstorm Warning	OUN	Ellis, Woodward	30 min
May 27, 8:23 PM CDT	Severe Thunderstorm Warning	OUN	Woods	37 min
May 27, 8:28 PM CDT	Severe Thunderstorm Warning	OUN	Dewey, Roger Mills	47 min
May 27, 8:40 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Kingfisher	50 min
May 27, 8:41 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Major	34 min
May 27, 8:50 PM CDT	Severe Thunderstorm Warning	OUN	Logan	40 min
May 27, 8:56 PM CDT	Severe Thunderstorm Warning	OUN	Custer	34 min
May 27, 9:00 PM CDT	Severe Thunderstorm Warning	OUN	Noble, Payne	30 min
May 27, 9:25 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Roger Mills	65 min
May 27, 9:25 PM CDT	Severe Thunderstorm Warning	OUN	Washita	65 min
May 27, 9:26 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Payne	64 min
May 27, 9:56 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Kiowa	64 min
May 27, 9:59 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Grady, McClain	61 min
May 27, 10:22 PM CDT	Severe Thunderstorm Warning	OUN	Pottawatomie	38 min
May 27, 10:22 PM CDT	Severe Thunderstorm Warning	OUN	Comanche	53 min
May 27, 10:30 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Oklahoma	30 min
May 27, 10:32 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Greer	58 min
May 27, 10:43 PM CDT	Severe Thunderstorm Warning	OUN	Jackson, Tillman	62 min
May 27, 10:48 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Garvin, Murray	42 min
May 27, 10:48 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Grady, McClain	42 min
May 27, 10:48 PM CDT	Severe Thunderstorm Warning	OUN	Stephens	42 min
May 27, 10:57 PM CDT	Severe Thunderstorm Warning	OUN	Cotton	63 min
May 27, 11:01 PM CDT	Severe Thunderstorm Warning	OUN	Kiowa	29 min
May 27, 11:10 PM CDT	Tornado Warning	OUN	Carter	35 min
May 27, 11:13 PM CDT	Severe Thunderstorm Warning	OUN	Jefferson	47 min
May 27, 11:29 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Love, Marshall	61 min
May 27, 11:29 PM CDT	Severe Thunderstorm Warning	OUN	Garvin, Stephens	61 min
May 27, 11:29 PM CDT	Severe Thunderstorm Warning	OUN	Johnston, Murray	61 min
May 27, 11:46 PM CDT	Severe Thunderstorm Warning	OUN	Tillman	29 min
May 27, 11:53 PM CDT	Severe Thunderstorm Warning	OUN	Bryan	37 min
May 28, 12:00 AM CDT	Severe Thunderstorm Warning	OUN	Jefferson	30 min
May 28, 12:21 AM CDT	Severe Thunderstorm Warning	OUN	Bryan, Johnston, Marshall	54 min
May 28, 12:21 AM CDT	Severe Thunderstorm Warning	OUN	Atoka	54 min
May 28, 1:50 AM CDT	Severe Thunderstorm Warning	OUN	Custer, Roger Mills	40 min
May 28, 2:17 AM CDT	Severe Thunderstorm Warning	OUN	Washita	43 min
May 27, 11:23 PM CDT	Severe Thunderstorm Warning	OUN	Wichita, Wilbarger	67 min
May 28, 12:01 AM CDT	Severe Thunderstorm Warning	OUN	Archer, Baylor	59 min
May 28, 12:01 AM CDT	Severe Thunderstorm Warning	OUN	Clay	59 min
May 28, 12:29 AM CDT	Severe Thunderstorm Warning	OUN	Wichita	46 min
May 28, 12:59 AM CDT	Severe Thunderstorm Warning	OUN	Archer, Clay	46 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.