Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 148, NWS Norman, OK

May 26, 1997Pontotoc County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at May 26, 1997, 8:03 PM CDT for Pontotoc County, Oklahoma. It was in force for 42 min. 3 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 26, 1997, 8:03 PM CDT (01:03 UTC)
Expired: May 26, 1997, 8:45 PM CDT
In force: 42 min
Issued by: NWS Norman, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Pontotoc County, OK

The radar

The Norman radar (KTLX), 86 km from the middle of the area, began a volume at 01:05 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
May 26, 8:11 PM CDT	Hail 1	Ada, OK
May 26, 8:11 PM CDT	Hail 0.75	Stonewall, OK
May 26, 8:29 PM CDT	Hail 1.75	Allen, 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

Norman, OK (KOUN), launched 00:00Z, 1.1 hours before the alert went out and 85 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: 3123 J/kg
Mixed-layer CIN: -46 J/kg
Mixed-layer LCL: 1331 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 116 m²/s²
0-3 km storm-relative helicity: 271 m²/s²
Significant tornado parameter: 1.3
Supercell composite: 14.6

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 26, 3:50 PM CDT, 4 hours 13 minutes earlier.

Area forecast discussion, May 26, 3:50 PM CDT, 4 hours 13 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
345 PM CDT MON MAY 26 1997

MODELS IN GNRL AGREEMENT...WITH NGM AND RUC HAVING BEST TIME WITH SFC
LOW MOVING NEWD ACRS CNTRL OK. ETA KEEPS LOW MOVG ACRS RED RVR. TRICK
THIS PKG WL BE POPS. NOTHING HAPPENING YET AND THINK BEST CHC FOR
WDSPRD CONVECTION WL BE ACRS NERN PTN OF FA AND AREAS TO THE NORTH
AND EAST. WL PUT IN SLGT CHC TO CHC POPS ACRS NRN...CNTRL AND SERN
ZNS. FEEL SLGT CHC POPS WARRENTED ACRS NWRN OK WITH PROX TO SWRN KS
ACTIVITY AND SPC WATCH. WITH MAIN WAVE COMING THRU TUES AND TUES
NIGHT...WL LEAVE AT LEAST CHEAP SLGT CHC POPS ACRS CNTRL AND ERN ZNS
AS MSTR IS NOT TOTALLY GONE.

TEMPS WL COOL DOWN OVR NEXT FEW DAYS BEFORE WARM UP IN LATE WEEK. WL
GO CLOSER TO FWC GUID DUE TO FAN BIAS.

FCSTID = 11
OKC   63  80  58  77 /  20  20  20  10
HBR   57  82  56  80 /  20  10  10   0
SPS   62  85  59  81 /  10  10  10  10
GAG   53  74  51  78 /  20  10  10   0
PNC   63  79  59  77 /  30  20  20  10
DUA   66  86  61  80 /  30  20  30  10

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

In the hours before

Local storm report, May 26, 6:30 PM CDT, 1 hour 33 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
630 PM CDT MON MAY 26 1997

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

0625 PM    CROMWELL                  OK   0.75 INCH HAIL
05/26/97   SEMINOLE

FM
                                          5 TRAIN BOXCARS. TREES AND
                                          POWER LINES DOWNED.

Local storm report, May 26, 6:30 PM CDT, 1 hour 33 minutes before

LOCAL STORM REPORT...CORRECTED...
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
630 PM CDT MON MAY 26 1997

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

0625 PM    CROMWELL                  OK   0.75 INCH HAIL
05/26/97   SEMINOLE

FM

Local storm report, May 26, 6:31 PM CDT, 1 hour 32 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
630 PM CDT MON MAY 26 1997

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNT*Y LOCATION....

0625 PM    CROMWELL                  OK   0.75 INCH HAIL
05/26/97   SEMINOLE

FM
                                          5 TRAIN BOXCARS. TREES AND
                                          POWER LINES DOWNED.

Local storm report, May 26, 6:42 PM CDT, 1 hour 21 minutes before

LOCAL STORM REPORT...CORRECTED...
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
630 PM CDT MON MAY 26 1997

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

0625 PM    CROMWELL                  OK   0.75 INCH HAIL
05/26/97   SEMINOLE

FM

Local storm report, May 26, 6:50 PM CDT, 1 hour 13 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
650 PM CDT MON MAY 26 1997

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

0645 PM    1 N CROMWELL              OK   TORNADO
05/26/97   SEMINOLE

FM

Local storm report, May 26, 6:51 PM CDT, 1 hour 12 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
650 PM CDT MON MAY 26 1997

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

0645 PM    1 N CROMWELL              OK   TORNADO
05/26/97   SEMINOLE

FM

The office that day

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

Issued	Product	Office	Counties	Lasted
May 26, 7:52 PM CDT	Tornado Warning	OUN	Hughes	23 min
May 26, 8:11 PM CDT	Severe Thunderstorm Warning	OUN	Johnston	49 min
May 26, 8:24 PM CDT	Severe Thunderstorm Warning	OUN	Coal, Hughes	51 min
May 26, 8:31 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Love, Marshall	49 min
May 26, 9:00 PM CDT	Tornado Warning	OUN	Johnston, Marshall	30 min
May 26, 9:04 PM CDT	Severe Thunderstorm Warning	OUN	Atoka, Bryan, Johnston	41 min
May 26, 9:16 PM CDT	Severe Thunderstorm Warning	OUN	Coal, Hughes	44 min
May 26, 9:18 PM CDT	Tornado Warning	OUN	Marshall	27 min
May 26, 9:21 PM CDT	Severe Thunderstorm Warning	OUN	Bryan	39 min
May 26, 9:39 PM CDT	Tornado Warning	OUN	Bryan, Marshall	36 min
May 26, 9:49 PM CDT	Severe Thunderstorm Warning	OUN	Atoka, Johnston	41 min
May 26, 10:08 PM CDT	Flash Flood Warning	OUN	Johnston, Marshall	3 hr
May 26, 10:13 PM CDT	Tornado Warning	OUN	Bryan, Marshall	47 min
May 26, 10:31 PM CDT	Severe Thunderstorm Warning	OUN	Pushmataha	49 min
May 26, 10:40 PM CDT	Tornado Warning	OUN	Marshall	35 min
May 26, 10:45 PM CDT	Tornado Warning	OUN	Pushmataha	45 min
May 26, 11:23 PM CDT	Severe Thunderstorm Warning	OUN	Choctaw, Pushmataha	52 min
May 27, 12:01 AM CDT	Severe Thunderstorm Warning	OUN	Choctaw, Pushmataha	59 min
May 27, 1:00 AM CDT	Severe Thunderstorm Warning	OUN	Choctaw	30 min
May 27, 1:30 AM CDT	Severe Thunderstorm Warning	OUN	Choctaw	30 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; radar from the NEXRAD Level II archive.