Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 330, NWS Norman, OK

June 29, 19975 counties in Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jun 29, 1997, 8:28 PM CDT for 5 counties in Oklahoma. It was in force for 47 min. 5 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: Jun 29, 1997, 8:28 PM CDT (01:28 UTC)
Expired: Jun 29, 1997, 9:15 PM CDT
In force: 47 min
Issued by: NWS Norman, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Alfalfa County, OK, Garfield County, OK, Grant County, OK, Kay County, OK, Noble County, OK

What was reported inside it

Time	Report	Where	Remark
Jun 29, 8:30 PM CDT	Thunderstorm Wind	Pond Creek, OK	Numerous small tree limbs were downed.
Jun 29, 8:50 PM CDT	Hail 1	Byron, OK
Jun 29, 8:50 PM CDT	Thunderstorm Wind 61	Byron, OK	Power poles were blown down by winds up to 70 mph.
Jun 29, 9:00 PM CDT	Thunderstorm Wind	Lahoma, OK	Severe thunderstorm winds downed numerous limbs and small trees.
Jun 29, 9:02 PM CDT	Hail 1	Perry, 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
Jun 29, 5:30 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 1.5 hours before the alert went out and 158 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: 2990 J/kg
Mixed-layer CIN: -22 J/kg
Mixed-layer LCL: 1186 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 62 m²/s²
0-3 km storm-relative helicity: 192 m²/s²
Significant tornado parameter: 1.6
Supercell composite: 10.7

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 Jun 29, 3:35 PM CDT, 4 hours 53 minutes earlier.

Area forecast discussion, Jun 29, 3:35 PM CDT, 4 hours 53 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
325 PM CDT SUN JUN 29 1997

TSTM COMPLEX WHICH MOVED THROUGH SRN KS AND XTRM NRN OK THIS MRNG
LEFT AN OUTFLO BNDRY ACRS NRN OK. BNDRY HAS PRETTY MUCH WASHED OUT IN
NWRN OK BUT SAT AND MESONET STILL SHOW SOME EVIDENCE OF BNDRY IN NCNTRL
OK.. 12Z UA DATA SHOWD WARMER H7 TMPS OVR THE WEST WITH CAP WKNG FRTHR E
INTO OK. MORE TSTMS EXPECTED TO DVLP THIS  AFTN/EVE OVER THE CNTRL HI
PLAINS WITH THIS ACTIVITY EXPECTED TO TRACK E/SEWD. MID LVL TMPS CONTG
TO WARM THRU THE PD. CAP WILL PROBLY BE TOO STG OVR NWRN OK FOR STMS TO
BRK THRU BUT CAP EXPECTED TO BE WKR OVR NCNTRL ZONES AND WILL KEEP POPS
UP THERE. CUD SEE WDLY SCT SHWRS/TSTMS OVR THE SE THIS EVENING WITH VRY
MOIST AMS AND REL WK CAP BUT ANY THAT DVLPS THERE SHUD DIE OUT SHORTLY
AFT SS. STG STORMS HAVE DEVELOPED ALG SFC BNDRY IN THE TX PANHANDLE THIS
AFTN. THIS ACTIVITY MAY APCH WRN BORDER ZONES BFR DSPTG LATER TONIGHT.
UPR RDG BUILDS OVR THE FA MONDAY THROUGH TUESDAY WITH WARM MID LVL TMPS
EXPECTED TO SUPPRESS TSTM DVLPMNT. THUS WILL DROP POPS AFTER TONIGHT.
TMPS EXPECTED TO GRDLY WRM..ESP ON TUESDAY AS SFC TROF BEGINS TO MOVE
EWD IN CNTRL PLAINS VEERING LO LVL FLO ACRS FA.

FCSTID = 02
OKC   73  94  74  96 /  20  10  10  10
HBR   73 100  74 102 /  20  10  10  10
SPS   75  98  75 100 /  10  10  10  10
GAG   71  98  72 100 /  20  20  10  10
PNC   75  97  76 100 /  30  30  10  10
DUA   74  93  74  95 /  20  10  10  10

.OKC...
OK...NONE.
TX...NONE.

In the hours before

Local storm report, Jun 29, 7:37 PM CDT, 51 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
0737 PM CDT SUN JUN 29 1997

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

0720 PM     3 W     GOULD            OK   71 MPH WIND GUST, MEASURED
06/29/97   HARMON                         OKLAHOMA MESONETWORK

0725 PM     8 E     NEWKIRK          OK   61 MPH WIND GUST, MEASURED
06/29/97   KAY                            OKLAHOMA MESONETWORK

0730 PM     8 E     NEWKIRK          OK   61 MPH WIND GUST, MEASURED
06/29/97   KAY                            OKLAHOMA MESONETWORK

MCCLURE

Local storm report, Jun 29, 7:42 PM CDT, 46 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
0737 PM CDT SUN JUN 29 1997

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

0720 PM     3 W     GOULD            OK   71 MPH WIND GUST, MEASURED
06/29/97   HARMON                         OKLAHOMA MESONETWORK

0725 PM     8 E     NEWKIRK          OK   61 MPH WIND GUST, MEASURED
06/29/97   KAY                            OKLAHOMA MESONETWORK

0730 PM     8 E     NEWKIRK          OK   61 MPH WIND GUST, MEASURED
06/29/97   KAY                            OKLAHOMA MESONETWORK

MCCLURE

Local storm report, Jun 29, 7:52 PM CDT, 36 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
0752 PM CDT SUN JUN 29 1997

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

0735 PM     4 SSE   BLACKWELL        OK   61 MPH WIND GUST, MEASURED
06/29/97   KAY                            OKLAHOMA MESONETWORK

0735 PM     8 E     NEWKIRK          OK   65 MPH WIND GUST, MEASURED
06/29/97   KAY                            OKLAHOMA MESONETWORK

MCCLURE

Local storm report, Jun 29, 7:57 PM CDT, 31 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
0752 PM CDT SUN JUN 29 1997

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

0735 PM     4 SSE   BLACKWELL        OK   61 MPH WIND GUST, MEASURED
06/29/97   KAY                            OKLAHOMA MESONETWORK

0735 PM     8 E     NEWKIRK          OK   65 MPH WIND GUST, MEASURED
06/29/97   KAY                            OKLAHOMA MESONETWORK

MCCLURE

Local storm report, Jun 29, 8:22 PM CDT, 6 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
0822 PM CDT SUN JUN 29 1997

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

0805 PM     1 SW    MEDFORD          OK   67 MPH WIND GUST, MEASURED
06/29/97   GRANT                          OKLAHOMA MESONETWORK

MCCLURE

Local storm report, Jun 29, 8:27 PM CDT, 1 minute before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
0822 PM CDT SUN JUN 29 1997

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

0805 PM     1 SW    MEDFORD          OK   67 MPH WIND GUST, MEASURED
06/29/97   GRANT                          OKLAHOMA MESONETWORK

MCCLURE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 29, 7:05 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Grant	40 min
Jun 29, 7:13 PM CDT	Tornado Warning	OUN	Kay	47 min
Jun 29, 7:28 PM CDT	Severe Thunderstorm Warning	OUN	Greer, Harmon, Jackson	47 min
Jun 29, 7:40 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Grant	50 min
Jun 29, 7:45 PM CDT	Tornado Warning	OUN	Noble	45 min
Jun 29, 7:57 PM CDT	Severe Thunderstorm Warning	OUN	Kay	33 min
Jun 29, 8:06 PM CDT	Flash Flood Warning	OUN	Grant	3 hr
Jun 29, 8:15 PM CDT	Flash Flood Warning	OUN	Alfalfa	3 hr
Jun 29, 8:58 PM CDT	Severe Thunderstorm Warning	OUN	Tillman	47 min
Jun 29, 9:12 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Grant, Noble, Payne	48 min
Jun 29, 9:12 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa	48 min
Jun 29, 9:40 PM CDT	Severe Thunderstorm Warning	OUN	Woods	35 min
Jun 29, 9:53 PM CDT	Severe Thunderstorm Warning	OUN	Logan, Payne	52 min
Jun 29, 9:57 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Grant	48 min
Jun 29, 10:12 PM CDT	Severe Thunderstorm Warning	OUN	Woods	33 min
Jun 29, 10:23 PM CDT	Flash Flood Warning	OUN	Alfalfa, Grant	3 hr
Jun 29, 10:33 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Logan	42 min
Jun 29, 10:45 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Grant	45 min
Jun 30, 12:45 AM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Pottawatomie	30 min
Jun 30, 1:23 AM CDT	Flash Flood Warning	OUN	Kay	3 hr
Jun 30, 1:35 AM CDT	Flash Flood Warning	OUN	Alfalfa, Grant	3 hr
Jun 30, 4:25 AM CDT	Severe Thunderstorm Warning	OUN	Blaine	50 min
Jun 29, 7:28 PM CDT	Severe Thunderstorm Warning	OUN	Hardeman	47 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1997 Every severe thunderstorm warning in 1997

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.