Alert archive / Oklahoma / Flash Flood Warnings in 2017

Flash Flood Warning 101, NWS Norman, OK

October 4, 2017Noble County, Oklahoma

NWS Norman, OK issued this flash flood warning at Oct 4, 2017, 11:52 AM CDT for Noble County, Oklahoma. It was in force for 3 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Oct 4, 2017, 11:52 AM CDT (16:52 UTC)
Expired
Oct 4, 2017, 2:45 PM CDT
In force
3 hr
Issued by
NWS Norman, OK
Area
Storm-based polygon
Flood severity
None

County Noble County, OK

The radar

The Vance AFB radar (KVNX), 74 km from the middle of the area, began a volume at 16:54 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

TimeReportWhereRemark
Oct 4, 12:00 PM CDTFLASH FLOOD6 E Billings, OKHIGHWAY 15 WATER OVER ROADWAY

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 4.9 hours before the alert went out and 147 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 12:00Z on 2017-10-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 639 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Norman, OK at 12:00Z on 2017-10-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 67 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
639 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
554 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
67 m²/s²
0-3 km storm-relative helicity
114 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

804 
WGUS54 KOUN 041652
FFWOUN
OKC103-041945-
/O.NEW.KOUN.FF.W.0101.171004T1652Z-171004T1945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Norman OK
1152 AM CDT WED OCT 4 2017

The National Weather Service in Norman has issued a

* Flash Flood Warning for...
  Northwestern Noble County in northern Oklahoma...

* Until 245 PM CDT
  
* At 1152 AM CDT, Doppler radar and automated rain gauges indicated 
  thunderstorms producing heavy rain across the warned area. Nearly 
  three inches of rain have already fallen. Flash flooding is 
  occurring or is imminent.

* Some locations that will experience flooding include...
  Billings.

Additional rainfall of up to one inch is possible in the warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Please report flooding to your local law enforcement agency when you
can do so safely.

&&

LAT...LON 3648 9726 3648 9746 3659 9746 3660 9734
      3659 9726

$$

03
1 follow-up statement
291 
WGUS74 KOUN 041751
FFSOUN

Flash Flood Statement
National Weather Service Norman OK
1251 PM CDT WED OCT 4 2017

OKC103-041945-
/O.CON.KOUN.FF.W.0101.000000T0000Z-171004T1945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Noble OK-
1251 PM CDT WED OCT 4 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 245 PM CDT FOR
NORTHWESTERN NOBLE COUNTY...

Local law enforcement has reported flash flooding near and east of 
Billings, just west of interstate 35. Up to three inches of rain 
have already fallen. Flash flooding is already occurring.

Some locations that will experience flooding include...
Billings.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Please report flooding to your local law enforcement agency when you
can do so safely.

A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.

&&

LAT...LON 3648 9726 3648 9746 3659 9746 3660 9734
      3659 9726

$$

03

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 4, 1:45 AM CDTFlood WatchOUNBlaine, Caddo, Canadian, Carter, Cleveland, Comanche and 17 more17 hr
Oct 4, 6:00 AM CDTAreal Flood AdvisoryOUNNoble105 min
Oct 4, 9:08 AM CDTAreal Flood AdvisoryOUNBlaine112 min
Oct 4, 9:41 AM CDTAreal Flood AdvisoryOUNNoble, Payne2 hr
Oct 4, 9:49 AM CDTAreal Flood AdvisoryOUNKingfisher116 min
Oct 4, 10:55 AM CDTAreal Flood AdvisoryOUNLogan2 hr
Oct 4, 11:18 AM CDTFlash Flood WarningOUNNoble, Payne6 hr
Oct 4, 11:48 AM CDTAreal Flood AdvisoryOUNBlaine, Caddo, Canadian, Custer, Grady, Kingfisher and 1 more3 hr
Oct 4, 12:09 PM CDTFlash Flood WarningOUNLogan5 hr
Oct 4, 12:14 PM CDTAreal Flood AdvisoryOUNKay, Noble3 hr
Oct 4, 12:58 PM CDTFlash Flood WarningOUNCanadian3 hr
Oct 4, 1:10 PM CDTAreal Flood AdvisoryOUNLincoln, Logan, Noble, Oklahoma, Payne, Pottawatomie and 1 more3 hr
Oct 4, 1:24 PM CDTAreal Flood AdvisoryOUNKiowa, Washita3 hr
Oct 4, 2:06 PM CDTFlash Flood WarningOUNLogan, Oklahoma3 hr
Oct 4, 2:53 PM CDTAreal Flood AdvisoryOUNCanadian, Cleveland, Grady, McClain, Oklahoma, Pottawatomie and 1 more4 hr
Oct 4, 3:49 PM CDTRiver Flood WarningOUNBlaine, Canadian13 hr
Oct 4, 3:55 PM CDTAreal Flood AdvisoryOUNCaddo, Greer, Kiowa, Washita3 hr
Oct 4, 4:01 PM CDTAreal Flood WarningOUNCanadian3 hr
Oct 4, 4:18 PM CDTFlash Flood WarningOUNCleveland3 hr
Oct 4, 5:06 PM CDTRiver Flood WarningOUNBlaine, Caddo, Canadian, Custer15 hr
Oct 4, 5:07 PM CDTAreal Flood AdvisoryOUNNoble, Payne3 hr
Oct 4, 5:57 PM CDTAreal Flood WarningOUNOklahoma3 hr
Oct 4, 6:06 PM CDTAreal Flood AdvisoryOUNComanche, Kiowa3 hr

Nearby

Flash Flood Warnings in Oklahoma, 2017Every flash flood warning in 2017

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.