Alert archive / Oklahoma / Flash Flood Warnings in 1997

Flash Flood Warning 37, NWS Norman, OK

July 17, 1997Kay County, Oklahoma

NWS Norman, OK issued this flash flood warning at Jul 17, 1997, 3:09 AM CDT for Kay County, Oklahoma. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 17, 1997, 3:09 AM CDT (08:09 UTC)
Expired: Jul 17, 1997, 6:15 AM CDT
In force: 3 hr
Issued by: NWS Norman, OK
Area: Whole counties

County Kay County, OK

The nearest sounding before it

Lamont, OK (KLMN), launched 00:00Z, 8.2 hours before the alert went out and 37 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: 2105 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 2151 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 80 m²/s²
0-3 km storm-relative helicity: 192 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 8.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KOKC 170811
FFWOKC
OKC071-171115-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NORMAN OK
309 AM CDT THU JUL 17 1997
 
THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  615 AM CDT
FOR THE FOLLOWING LOCATION...
 
IN NORTHEAST OKLAHOMA
 
   ...KAY COUNTY
 
NATIONAL WEATHER SERVICE RADAR ESTIMATES THAT 3 TO 4 INCHES OF RAIN HAS
FALLEN BETWEEN BLACKWELL AND PONCA CITY SINCE MIDNIGHT. THIS IS IN
ADDITION TO HEAVY RAINFALL OVER KAY COUNTY LAST NIGHT. SHOWERS AND
THUNDERSTORMS WILL PERSIST ACROSS PORTIONS OF KAY COUNTY THROUGH AT
LEAST 4 AM FURTHER ADDING TO FLOODING PROBLEMS. THE BLACKWELL POLICE
DEPARTMENT IS REPORTING FLOODING IN PORTIONS OF THAT CITY.
 
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN FLOODED ROADS ARE DIFFICULT TO
DETECT.  DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROADWAY.
 
...SPEG.

What forecasters said that day

The local office's own words before this flash flood 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 flash flood warning went out at Jul 16, 3:43 PM CDT, 11 hours 26 minutes earlier.

Area forecast discussion, Jul 16, 3:43 PM CDT, 11 hours 26 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
330 PM CDT WED JUL 16 1997

MCV CONTS TO MOVE SLOWLY EWD ACRS NRN OK THIS AFTN. WILL CONTINUE WITH
POPS FOR NCNTRL AND CNTRL ZONES FOR THIS EVENING BASED ON THIS FTR.
MORE CONVECTION HAS DVLPD OVR THE HIGH PLAINS OF CO. WITH NWLY UPR FLO
PREVAILING WILL OPT TO KEEP LO POPS IN THE NW. NGM/ETA S/W NOW OVER SRN KS
SWD ACRS OK AS UPR STRETCHES EWD INTO THE CNTRL PLAINS. WITH MOIST AMS RMNG
IN PLACE AND HOT TMPS EXPECTED TO CONT CUD SEE SCT TSTMS DVLP WITH THIS
FTR THUS WILL INCLUDE LO POPS FOR THURSDAY AND THURSDAY NIGHT MOST AREAS.
BY FRIDAY THIS FTR IS PROGGED TO CONT SWD INTO SRN OK AND WILL LIMIT POPS
TO SRN PTNS OF THE FA.

FCSTID = 02

OKC   71  95  71  94 /  10  20  20  20
HBR   71  99  71  98 /  10  10  10  20
SPS   71 100  72  99 /  10  10  10  20
GAG   67  98  67  98 /  20  20  20  10
PNC   76  97  76  96 /  20  20  10  10
DUA   72  96  72  95 /  10  10  10  20

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

In the hours before

Local storm report, Jul 16, 9:25 PM CDT, 5 hours 44 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
925 PM CDT WED JUL 16 1997

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

0920 PM    TONKAWA                   OK   ...FLOODING...
07/16/97   KAY                            SEVERAL STREETS COVERED WITH
                                          WATER. SEVERAL LOW SPOTS IN
                                          TONKAWA UNDER 3 FEET OF WATER.

FM

Local storm report, Jul 16, 9:27 PM CDT, 5 hours 42 minutes before

LOCAL STORM REPORT...CORRECTED HAIL SIZE...
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
855 PM CDT WED JUL 16 1997

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

0835 PM    NARDIN                    OK   1.75 INCH HAIL
07/16/97   KAY

JS/FM

Local storm report, Jul 16, 9:30 PM CDT, 5 hours 39 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
925 PM CDT WED JUL 16 1997

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

0920 PM    TONKAWA                   OK   ...FLOODING...
07/16/97   KAY                            SEVERAL STREETS COVERED WITH
                                          WATER. SEVERAL LOW SPOTS IN
                                          TONKAWA UNDER 3 FEET OF WATER.

FM

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 16, 7:30 PM CDT	Severe Thunderstorm Warning	OUN	Kay	60 min
Jul 16, 7:45 PM CDT	Flash Flood Warning	OUN	Kay	2 hr
Jul 16, 8:03 PM CDT	Severe Thunderstorm Warning	OUN	Grant	42 min
Jul 16, 8:32 PM CDT	Tornado Warning	OUN	Grant, Kay	28 min
Jul 16, 9:02 PM CDT	Severe Thunderstorm Warning	OUN	Kay, Noble	28 min
Jul 16, 9:48 PM CDT	Flash Flood Warning	OUN	Kay	117 min
Jul 17, 6:20 AM CDT	Flash Flood Warning	OUN	Kay, Noble	3 hr
Jul 17, 9:33 AM CDT	Flash Flood Warning	OUN	Kay, Noble	3 hr

Nearby

Flash Flood Warnings in Oklahoma, 1997 Every flash flood 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; the sounding from the Mesonet's radiosonde archive.