Alert archive / Oklahoma / Flash Flood Warnings in 2019

Flash Flood Warning 115, NWS Norman, OK

June 15, 2019Kay County, Oklahoma

NWS Norman, OK issued this flash flood warning at Jun 15, 2019, 6:55 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
Jun 15, 2019, 6:55 AM CDT (11:55 UTC)
Expired
Jun 15, 2019, 10:00 AM CDT
In force
3 hr
Issued by
NWS Norman, OK
Area
Storm-based polygon
Flood severity
None

County Kay County, OK

The radar

The Vance AFB radar (KVNX), 88 km from the middle of the area, began a volume at 11:57 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.

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 11.9 hours before the alert went out and 179 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-pSkew-T log-p diagram, Norman, OK at 00:00Z on 2019-06-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2339 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Norman, OK at 00:00Z on 2019-06-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 130 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
2339 J/kg
Mixed-layer CIN
-102 J/kg
Mixed-layer LCL
1282 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
130 m²/s²
0-3 km storm-relative helicity
384 m²/s²
Significant tornado parameter
0.9
Supercell composite
14.6

Open this sounding in Storm Lab

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 Jun 15, 4:19 AM CDT, 2 hours 36 minutes earlier.

Area forecast discussion, Jun 15, 4:19 AM CDT, 2 hours 36 minutes before
Area Forecast Discussion
National Weather Service Norman OK
419 AM CDT Sat Jun 15 2019

.DISCUSSION...
Showers and thunderstorms have developed as far south as the OKC
metro early this morning behind two outflow boundaries, thanks to
a fairly stout LLJ over central OK. A few strong storms are also
persisting over northern OK. Most of this activity should wane
near and just after sunrise. A few showers and thunderstorms can't
be completely ruled out along the outflow boundaries by late this
afternoon so have included a corridor of SChc over central OK for
this reason.

Late this afternoon through this evening, moist convection is
expected to develop near the intersection of a stationary boundary
and dryline across portions of the southern TX panhandle, and then
move into SW OK and western north TX. Steep mid level lapse rates
and sufficient deep layer shear will support another threat of
large hail and then damaging winds through the overnight hours
likely near and just north of the Red River. A mid level shortwave
trough will also result in increasing coverage through the
overnight hours from central to northern OK. By early Sunday
morning, most of the region should have ongoing moist convection
present. Flooding may become a concern with slower storm motions
anticipated, specifically over north central OK.

The flood threat will continue into Sunday evening and early
Monday morning, especially along and south of I-40 with a stationary
boundary draped over the region, another LLJ developing, and the
slow progression of a mid to upper trough axis. A flood watch may
eventually be needed. This flood threat will include the OKC
metro. Likely PoPs will linger across SE OK through Monday. The
wet pattern will continue through the week as several additional
shortwave troughs impact the central and southern plains. After
Monday morning, another round of significant rainfall is expected
late Tue into Wed. Stronger mid to upper flow may also support
severe weather in addition to flooding rainfall. A brief break in
rain chances will arrive Thu, but then return next weekend with SW
flow aloft impacting the Southern Plains.

&&

.PRELIMINARY POINT TEMPS/POPS...
Oklahoma City OK  89  70  86  66 /  30  40  50  50
Hobart OK         94  68  89  66 /  20  60  40  50
Wichita Falls TX  96  72  91  69 /  10  60  30  60
Gage OK           88  63  83  61 /  10  50  30  40
Ponca City OK     88  68  85  65 /  20  70  50  40
Durant OK         90  73  87  69 /  10  50  50  70

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...None.
TX...None.
&&

14/03
Hazardous weather outlook, Jun 15, 5:22 AM CDT, 1 hour 33 minutes before
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In the hours before

Special weather statement, Jun 15, 4:15 AM CDT, 2 hours 40 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
415 AM CDT Sat Jun 15 2019

OKZ007-008-150945-
Kay OK-Grant OK-
415 AM CDT Sat Jun 15 2019

...SIGNIFICANT WEATHER ADVISORY FOR Kay and southeastern Grant
Counties Until 445 AM CDT...

AT 413 AM CDT, a strong thunderstorm was located 5 miles east of
Blackwell, moving east at 55 MPH.

HAZARDS INCLUDE...
Hail up to the size of nickels...
Wind gusts to 50 MPH...

Locations impacted include...
Ponca City, Blackwell, Tonkawa, Newkirk, Lamont, Kaw City, Deer
Creek, Kildare, Kaw Lake, Hardy, Nardin and Peckham.

LAT...LON 3678 9675 3678 9679 3677 9679 3677 9682
      3674 9683 3675 9687 3675 9689 3670 9692
      3669 9700 3670 9704 3668 9707 3660 9766
      3677 9771 3700 9682 3700 9675
TIME...MOT...LOC 0913Z 254DEG 49KT 3679 9719

MAD
Special weather statement, Jun 15, 4:50 AM CDT, 2 hours 5 minutes before
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Special weather statement, Jun 15, 5:25 AM CDT, 1 hour 30 minutes before
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Special weather statement, Jun 15, 6:01 AM CDT, 54 minutes before
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Special weather statement, Jun 15, 6:38 AM CDT, 17 minutes before
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Local storm report, Jun 15, 6:45 AM CDT, 10 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 14, 9:41 PM CDTSpecial Weather StatementOUNHarmon, Jackson34 min
Jun 14, 11:22 PM CDTSpecial Weather StatementOUNHarper, Woods, Woodward53 min
Jun 14, 11:34 PM CDTSevere Thunderstorm WarningOUNHarper41 min
Jun 14, 11:44 PM CDTSevere Thunderstorm WarningOUNHarper, Woods, Woodward46 min
Jun 14, 11:58 PM CDTSevere Thunderstorm WarningOUNAlfalfa, Grant, Woods62 min
Jun 15, 12:28 AM CDTSevere Thunderstorm WarningOUNHarper, Woods, Woodward47 min
Jun 15, 12:30 AM CDTSpecial Weather StatementOUNHarper30 min
Jun 15, 12:39 AM CDTSpecial Weather StatementOUNDewey, Major, Woodward36 min
Jun 15, 12:41 AM CDTSevere Thunderstorm WarningOUNHarper, Woods, Woodward49 min
Jun 15, 12:47 AM CDTSpecial Weather StatementOUNGarfield, Kay43 min
Jun 15, 12:56 AM CDTSevere Thunderstorm WarningOUNAlfalfa, Garfield, Grant, Kay, Woods, Woodward64 min
Jun 15, 1:18 AM CDTSpecial Weather StatementOUNWoods42 min
Jun 15, 1:30 AM CDTSevere Thunderstorm WarningOUNAlfalfa, Woods, Woodward45 min
Jun 15, 1:34 AM CDTSpecial Weather StatementOUNBlaine, Garfield, Kingfisher, Logan, Major, Noble and 1 more41 min
Jun 15, 1:51 AM CDTAreal Flood AdvisoryOUNWoods3 hr
Jun 15, 1:54 AM CDTSevere Thunderstorm WarningOUNAlfalfa, Garfield, Grant, Kay, Noble, Woods51 min
Jun 15, 2:25 AM CDTSpecial Weather StatementOUNNoble35 min
Jun 15, 2:34 AM CDTAreal Flood AdvisoryOUNKay, Noble3 hr
Jun 15, 3:04 AM CDTSpecial Weather StatementOUNGrant, Kay, Noble26 min
Jun 15, 3:27 AM CDTSpecial Weather StatementOUNNoble33 min
Jun 15, 3:46 AM CDTSpecial Weather StatementOUNGrant29 min
Jun 15, 3:54 AM CDTSevere Thunderstorm WarningOUNAlfalfa, Grant, Kay33 min
Jun 15, 3:57 AM CDTAreal Flood AdvisoryOUNGrant, Kay3 hr
Jun 15, 4:15 AM CDTSpecial Weather StatementOUNKay30 min
Jun 15, 4:48 AM CDTFlash Flood WarningOUNKay3 hr
Jun 15, 4:50 AM CDTSpecial Weather StatementOUNGrant25 min
Jun 15, 5:03 AM CDTSevere Thunderstorm WarningOUNGrant42 min
Jun 15, 5:25 AM CDTSpecial Weather StatementOUNKay50 min
Jun 15, 5:54 AM CDTSevere Thunderstorm WarningOUNKay51 min
Jun 15, 6:01 AM CDTSpecial Weather StatementOUNKay29 min
Jun 15, 6:17 AM CDTAreal Flood AdvisoryOUNGrant, Kay3 hr
Jun 15, 6:24 AM CDTFlash Flood WarningOUNGrant, Kay3 hr
Jun 15, 6:38 AM CDTSpecial Weather StatementOUNKay37 min
Jun 15, 6:43 AM CDTAreal Flood AdvisoryOUNKay3 hr
Jun 15, 7:06 AM CDTSpecial Weather StatementOUNKay39 min
Jun 15, 8:56 AM CDTRiver Flood WarningOUNGrant, Kay, Noble3 days
Jun 15, 4:22 PM CDTFlood WatchOUNAlfalfa, Beckham, Blaine, Caddo, Canadian, Carter and 32 more11 hr
Jun 14, 11:43 PM CDTSpecial Weather StatementOUNFoard32 min
Jun 15, 12:12 AM CDTSpecial Weather StatementOUNFoard33 min

Nearby

Flash Flood Warnings in Oklahoma, 2019Every flash flood warning in 2019

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; radar from the NEXRAD Level II archive.