Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 339, NWS Norman, OK

May 30, 2001Comanche County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at May 30, 2001, 2:01 AM CDT for Comanche County, Oklahoma. It was in force for 44 min. 2 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 30, 2001, 2:01 AM CDT (07:01 UTC)
Expired: May 30, 2001, 2:45 AM CDT
In force: 44 min
Issued by: NWS Norman, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Comanche County, OK

What was reported inside it

Time	Report	Where	Remark
May 30, 2:15 AM CDT	Hail 1	Indiahoma, OK
May 30, 2:19 AM CDT	Hail 1	Indiahoma, 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 30, 1:00 AM CDT	Tornado Watch	SPC	3 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 7.0 hours before the alert went out and 116 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: 1017 J/kg
Mixed-layer CIN: -336 J/kg
Mixed-layer LCL: 966 m above ground
0-6 km bulk shear: 66 kt
0-1 km storm-relative helicity: 424 m²/s²
0-3 km storm-relative helicity: 670 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

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 29, 10:35 PM CDT, 3 hours 26 minutes earlier.

Area forecast discussion, May 29, 10:35 PM CDT, 3 hours 26 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
1035 PM CDT TUE MAY 29 2001

SEVERE WEATHER CONTINUES TO INCREASE ACROSS THE CWA...SO NOT MUCH
TIME TO SPARE. TORNADIC SUPERCELL CONTINUES TO MOVE ACROSS HARDEMAN
COUNTY...WHILE ACTIVITY ACROSS NORTHERN OKLAHOMA CONTINUES TO
TRANSITION TO MORE OF A BOW ECHO TYPE MODE. SPC WILL ISSUE A TORNADO
WATCH SHORTLY TO THE EAST OF CURRENT WATCH. NEW SET OF ZONES WAS
SENT ABOUT AN HOUR AGO TO RE-INTRODUCE CATEGORICAL POPS ACROSS THE
NORTH AND WEST...AND TO INCLUDE SEVERE WORDING ACROSS THE ENTIRE
AREA. OTHERWISE...ZONES IN DECENT SHAPE AND ONLY MADE SOME MINOR
TWEAKS OF WIND AND TEMPS.

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

In the hours before

Local storm report, May 29, 11:46 PM CDT, 2 hours 15 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
1146 PM CDT TUE MAY 29 2001

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

1108 PM    BRAMAN                    OK   WIND DAMAGE
05/29/01   KAY                            LIGHT POLE BLOWN
                                          DOWN...REPORTED BY
                                          BRAMAN EOC

KT

Local storm report, May 29, 11:53 PM CDT, 2 hours 8 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
1153 PM CDT TUE MAY 29 2001

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

1150 PM    FREDERICK                 OK   .75 INCH HAIL
05/29/01   TILLMAN                        REPORTED BY TILLMAN
                                          SHERIFFS OFFICE

KT

Local storm report, May 29, 11:54 PM CDT, 2 hours 7 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
1154 PM CDT TUE MAY 29 2001

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

1150 PM    10 NW HINTON              OK   WIND DAMAGE
05/29/01   CADDO                          TRUCK BLOWN OVER ON
                                          I-40 AT MILE MARKER
                                          96...AMATEUR RADIO
   4                                       REPORT

KT

Local storm report, May 30, 12:21 AM CDT, 1 hour 40 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
1221 AM CDT WED MAY 30 2001

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

1159 PM    ALTUS                     OK   .88 INCH HAIL
05/29/01   JACKSON                        BY SPOTTER

1203 AM    ALTUS                     OK   1.0N0 INCH HAIL
05/30/01   JACKSON                        SPOTTER REPORT

CW

Local storm report, May 30, 12:44 AM CDT, 1 hour 17 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
1244 AM CDT WED MAY 30 2001

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

1241 AM    PIEDMONT                  OK   1.00 INCH HAIL
05/30/01   CANADIAN                       SPOTTER REPORT

CW

Local storm report, May 30, 1:24 AM CDT, 37 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
124 AM CDT WED MAY 30 2001

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

0120 AM    OKLAHOMA CITY             OK   70 MPH WIND GUST
05/30/01   OKLAHOMA                       ESTIMATED BY SPOTTER
                                          IN DOWNTOWN AREA

0108 AM    5 N MUSTANG               OK   60 MPH WIND GUST
05/30/01   CANADIAN                       (ESTIMATED) HAM RADIO
                                          REPORT

0110 AM    4 W BLAIR                 OK   .88 INCH HAIL
05/30/01   JACKSON                        HAM RADIO REPORT

1259 AM    4 N DUKE                  OK   1.75 INCH HAIL
05/30/01   JACKSON                        HAM RADIO REPORT

1256 AM    RUSSELL                   OK   1.25 INCH HAIL
05/30/01   GREER                          HAM RADIO REPORT

1254 AM    PIEDMONT                  OK   1.00 INCH HAIL
05/30/01   CANADIAN                       HAM RADIO REPORT

1253 AM    8 S REED                  OK   .75 INCH HAIL
05/30/01   GREER                          HAM RADIO REPORT

1252 AM    4 SW MANGUM               OK   1.00 INCH HAIL
05/30/01   GREER                          REPORTED BY EOC

1233 AM    10 N GRANDFIELD           OK   1.00 INCH HAIL
05/30/01   TILLMAN                        HAM RADIO REPORT

1231 AM    10 N GRANDFIELD           OK   70 MPH WIND GUST
05/30/01   TILLMAN                        (ESTIMATED) HAM RADIO
                                          REPORT

LANE

The office that day

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

Issued	Product	Office	Counties	Lasted
May 29, 8:52 PM CDT	Severe Thunderstorm Warning	OUN	Harper	38 min
May 29, 9:42 PM CDT	Severe Thunderstorm Warning	OUN	Beckham	48 min
May 29, 10:03 PM CDT	Severe Thunderstorm Warning	OUN	Jackson	42 min
May 29, 10:07 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Major	38 min
May 29, 10:14 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Grant	46 min
May 29, 10:22 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Custer, Dewey	38 min
May 29, 10:27 PM CDT	Severe Thunderstorm Warning	OUN	Beckham	33 min
May 29, 10:39 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Grant, Kay, Noble	51 min
May 29, 10:44 PM CDT	Severe Thunderstorm Warning	OUN	Jackson	46 min
May 29, 11:03 PM CDT	Tornado Warning	OUN	Tillman	27 min
May 29, 11:05 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Custer, Washita	40 min
May 29, 11:06 PM CDT	Tornado Warning	OUN	Kay	24 min
May 29, 11:12 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Caddo, Canadian	48 min
May 29, 11:12 PM CDT	Severe Thunderstorm Warning	OUN	Kingfisher, Logan	48 min
May 29, 11:29 PM CDT	Severe Thunderstorm Warning	OUN	Tillman	46 min
May 29, 11:43 PM CDT	Severe Thunderstorm Warning	OUN	Washita	47 min
May 29, 11:44 PM CDT	Tornado Warning	OUN	Canadian	31 min
May 30, 12:01 AM CDT	Severe Thunderstorm Warning	OUN	Greer, Harmon	44 min
May 30, 12:03 AM CDT	Severe Thunderstorm Warning	OUN	Jackson	42 min
May 30, 12:03 AM CDT	Severe Thunderstorm Warning	OUN	Caddo	42 min
May 30, 12:13 AM CDT	Severe Thunderstorm Warning	OUN	Cotton, Tillman	47 min
May 30, 12:17 AM CDT	Severe Thunderstorm Warning	OUN	Canadian	43 min
May 30, 12:29 AM CDT	Tornado Warning	OUN	Cotton, Tillman	31 min
May 30, 12:39 AM CDT	Severe Thunderstorm Warning	OUN	Kiowa	51 min
May 30, 12:44 AM CDT	Severe Thunderstorm Warning	OUN	Greer, Harmon, Jackson	46 min
May 30, 12:49 AM CDT	Severe Thunderstorm Warning	OUN	Oklahoma	41 min
May 30, 12:57 AM CDT	Severe Thunderstorm Warning	OUN	Caddo, Canadian, Grady	48 min
May 30, 1:01 AM CDT	Tornado Warning	OUN	Cotton	29 min
May 30, 1:20 AM CDT	Severe Thunderstorm Warning	OUN	Cleveland, McClain	40 min
May 30, 1:28 AM CDT	Severe Thunderstorm Warning	OUN	Greer, Jackson, Kiowa	47 min
May 30, 1:30 AM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Oklahoma, Pottawatomie	45 min
May 30, 1:46 AM CDT	Severe Thunderstorm Warning	OUN	Caddo	44 min
May 30, 1:58 AM CDT	Severe Thunderstorm Warning	OUN	Cleveland, McClain	47 min
May 30, 2:24 AM CDT	Severe Thunderstorm Warning	OUN	Caddo, Grady	36 min
May 30, 2:42 AM CDT	Severe Thunderstorm Warning	OUN	Comanche	48 min
May 30, 2:57 AM CDT	Severe Thunderstorm Warning	OUN	Garvin, McClain	48 min
May 30, 3:12 AM CDT	Severe Thunderstorm Warning	OUN	Grady	48 min
May 30, 3:28 AM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Pottawatomie	47 min
May 30, 3:36 AM CDT	Severe Thunderstorm Warning	OUN	Caddo, Washita	39 min
May 30, 3:43 AM CDT	Severe Thunderstorm Warning	OUN	Seminole	47 min
May 29, 9:13 PM CDT	Tornado Warning	OUN	Hardeman	32 min
May 29, 9:47 PM CDT	Tornado Warning	OUN	Hardeman	28 min
May 29, 10:13 PM CDT	Severe Thunderstorm Warning	OUN	Hardeman	32 min
May 29, 10:13 PM CDT	Tornado Warning	OUN	Hardeman	32 min
May 29, 10:39 PM CDT	Tornado Warning	OUN	Hardeman, Wilbarger	36 min
May 30, 6:32 PM CDT	Severe Thunderstorm Warning	OUN	Clay	43 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.