Alert archive / Oklahoma / Flash Flood Warnings in 2016

Flash Flood Warning 12, NWS Tulsa, OK

July 1, 2016Haskell County, LeFlore County, Oklahoma

NWS Tulsa, OK issued this flash flood warning at Jul 1, 2016, 7:40 PM CDT for Haskell County, LeFlore County, Oklahoma. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 1, 2016, 7:40 PM CDT (00:40 UTC)
Expired
Jul 2, 2016, 1:45 AM CDT
In force
6 hr
Issued by
NWS Tulsa, OK
Area
Storm-based polygon
Flood severity
None

Counties Haskell County, OK, LeFlore County, OK

The radar

The Western Arkansas radar (KSRX), 64 km from the middle of the area, began a volume at 00:44 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, 0.7 hours before the alert went out and 233 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 2016-07-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1343 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Norman, OK at 00:00Z on 2016-07-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 54 square meters per square second.1939Sfc1 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
1343 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
1307 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
54 m²/s²
0-3 km storm-relative helicity
159 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.8

Open this sounding in Storm Lab

The text

As transmitted.

077 
WGUS54 KTSA 020040
FFWTSA
OKC061-079-020645-
/O.NEW.KTSA.FF.W.0012.160702T0040Z-160702T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TULSA OK
740 PM CDT FRI JUL 1 2016

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  LE FLORE COUNTY IN SOUTHEASTERN OKLAHOMA...
  SOUTHEASTERN HASKELL COUNTY IN SOUTHEASTERN OKLAHOMA...

* UNTIL 145 AM CDT SATURDAY

* AT 738 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. RAINFALL RATES EXCEEDING 3
  INCHES PER HOUR HAVE BEEN ESTIMATED BY RADAR OVER SOUTH CENTRAL
  LEFLORE COUNTY AND FAR SOUTHWESTERN HASKELL COUNTY FROM SLOW
  MOVING THUNDERSTORMS.

* SOME LOCATIONS THAT MAY EXPERIENCE FLOODING INCLUDE...
  POTEAU...                         HEAVENER...
  PANAMA...                         WISTER...
  HOWE...                           KEOTA...
  MCCURTAIN...                      BOKOSHE...
  FANSHAWE...                       MC CURTAIN...
  WHITESBORO...                     HEAVENER RUNESTONE STATE PARK...
  BIG CEDAR...                      MUSE...
  LAKE WISTER STATE PARK...         TALIMENA STATE PARK...
  SHADY POINT...                    MILTON...
  HODGEN...                         SUMMERFIELD...

ADDITIONAL HEAVY RAINFALL IS OCCURRING OVER THE WARNED AREA...WHICH
COULD EXACERBATE THE FLOODING SITUATION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...FARMLAND...AND OTHER LOW LYING
SPOTS.

IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO CROSS FLOODED
ROADS. FIND AN ALTERNATE ROUTE.

&&

LAT...LON 3465 9494 3468 9494 3468 9499 3494 9500
      3494 9493 3506 9493 3506 9502 3524 9504
      3527 9482 3506 9445 3456 9446

$$

LACY
1 follow-up statement
079 
WGUS74 KTSA 020308
FFSTSA

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1008 PM CDT FRI JUL 1 2016

OKC061-079-020645-
/O.CON.KTSA.FF.W.0012.000000T0000Z-160702T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LE FLORE OK-HASKELL OK-
1008 PM CDT FRI JUL 1 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 145 AM CDT FOR LE
FLORE AND SOUTHEASTERN HASKELL COUNTIES...

AT 1004 PM CDT...DOPPLER RADAR INDICATED THAT THE HEAVY RAINS HAVE
ENDED OVER THE WARNED AREA. HOWEVER...RADAR ESTIMATES THAT BETWEEN 4
AND 5 INCHES OF RAIN HAS FALLEN IN SPOTS LATE THIS AFTERNOON AND
INTO THE EVENING OVER CENTRAL LEFLORE AND EXTREME SOUTHEAST HASKELL
COUNTY. EVEN THOUGH HEAVY RAINS HAVE ENDED...FLASH FLOODING MAY
STILL BE ONGOING FROM THE HEAVY RAINFALL EARLIER.

SOME LOCATIONS THAT MAY EXPERIENCE FLOODING INCLUDE...
POTEAU...                         HEAVENER...
PANAMA...                         WISTER...
HOWE...                           KEOTA...
MCCURTAIN...                      BOKOSHE...
FANSHAWE...                       MC CURTAIN...
WHITESBORO...                     HEAVENER RUNESTONE STATE PARK...
BIG CEDAR...                      MUSE...
LAKE WISTER STATE PARK...         TALIMENA STATE PARK...
SHADY POINT...                    MILTON...
HODGEN...                         SUMMERFIELD...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...FARMLAND...AND OTHER LOW LYING
SPOTS.

IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO CROSS FLOODED
ROADS. FIND AN ALTERNATE ROUTE.

&&

LAT...LON 3465 9494 3468 9494 3468 9499 3494 9500
      3494 9493 3506 9493 3506 9502 3524 9504
      3527 9482 3506 9445 3456 9446

$$

LACY

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 1, 7:06 PM CDTAreal Flood AdvisoryTSAHaskell, Latimer, LeFlore3 hr

Nearby

Flash Flood Warnings in Oklahoma, 2016Every flash flood warning in 2016

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.