Alert archive / Oklahoma / Flash Flood Warnings in 2013

Flash Flood Warning 2, NWS Tulsa, OK

April 18, 20138 counties in Oklahoma

NWS Tulsa, OK issued this flash flood warning at Apr 18, 2013, 1:00 AM CDT for 8 counties in Oklahoma. It was in force for 4 hr. 4 reports 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: Apr 18, 2013, 1:00 AM CDT (06:00 UTC)
Expired: Apr 18, 2013, 5:00 AM CDT
In force: 4 hr
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Flood severity: None

Counties Cherokee County, OK, Craig County, OK, Delaware County, OK, Mayes County, OK, Muskogee County, OK, Ottawa County, OK, Rogers County, OK, Wagoner County, OK

The radar

The Tulsa radar (KINX), 35 km from the middle of the area, began a volume at 06:02 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	Remark
Apr 18, 4:00 AM CDT	FLOOD	Wagoner, OK	STREET FLOODING. WATER IN A FEW YARDS. SOCIAL MEDIA.
Apr 18, 4:00 AM CDT	FLASH FLOOD	Mazie, OK	HIGHWAY 69 TEMPORARILY CLOSED DUE TO HIGH WATER.
Apr 18, 4:44 AM CDT	FLASH FLOOD	Mazie, OK	FLOOD WATERS 1 1/2 FEET DEEP OVER PORTIONS OF HIGHWAY 69 NEAR THE MAYES AND WAGONER COUNTY LINE.
Apr 18, 5:00 AM CDT	FLASH FLOOD	4 Ne Salina, OK	HIGHWAY 82 FLOODED AND IMPASSABLE BETWEEN SALINA AND SPAVINAW. LOCATION APPROXIMATE.

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

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 6.0 hours before the alert went out and 144 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: 1964 J/kg
Mixed-layer CIN: -41 J/kg
Mixed-layer LCL: 1350 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 122 m²/s²
0-3 km storm-relative helicity: 291 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 9.2

Open this sounding in Storm Lab

The text

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

606 
WGUS54 KTSA 180600
FFWTSA
OKC021-035-041-097-101-115-131-145-181000-
/O.NEW.KTSA.FF.W.0002.130418T0600Z-130418T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TULSA OK
100 AM CDT THU APR 18 2013

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  MAYES COUNTY IN NORTHEAST OKLAHOMA...
  NORTH CENTRAL MUSKOGEE COUNTY IN EAST CENTRAL OKLAHOMA...
  NORTHWESTERN CHEROKEE COUNTY IN EAST CENTRAL OKLAHOMA...
  SOUTHEASTERN CRAIG COUNTY IN NORTHEAST OKLAHOMA...
  SOUTHEASTERN ROGERS COUNTY IN NORTHEAST OKLAHOMA...
  SOUTHWESTERN OTTAWA COUNTY IN NORTHEAST OKLAHOMA...
  WAGONER COUNTY IN NORTHEAST OKLAHOMA...
  WESTERN DELAWARE COUNTY IN NORTHEAST OKLAHOMA...

* UNTIL 500 AM CDT

* AT 100 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  THUNDERSTORMS WITH VERY HEAVY RAIN OVER THE WARNED AREA. 1 TO 2 
  INCHES OF RAINFALL HAS ALREADY OCCURRED WITH AN ADDITIONAL 2
  INCHES POSSIBLE.  

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT COULD EXPERIENCE FLOODING INCLUDE...
  CLAREMORE...PRYOR...WAGONER...ADAIR...AFTON...BERNICE...BERNICE
  STATE PARK...BIG CABIN...CHEROKEE STATE PARK...CHLOETA...
  CHOUTEAU...CLEORA...COWETA...DISNEY...FAIRLAND...HULBERT...INOLA...
  KETCHUM...LANGLEY...LEACH...LOCUST GROVE...OKAY...PEGGS...
  PENSACOLA...PORTER...ROSE...SALINA...SEQUOYAH STATE PARK...SPAVINAW
  AND SPAVINAW STATE PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROAD TO
UNKNOWN DEPTHS. IT ONLY TAKES TWO FEET OF RUSHING WATER TO CARRY AWAY
MOST SPORT UTILITY VEHICLES AND PICKUPS. TAKE A DIFFERENT ROUTE TO
REACH YOUR DESTINATION OR WAIT UNTIL THE WATER RECEDES. REMEMBER...
MOST FLOOD RELATED DEATHS OCCUR IN AUTOMOBILES.

&&

LAT...LON 3681 9479 3589 9499 3582 9524 3570 9566
      3637 9563

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 17, 7:22 PM CDT	Special Weather Statement	TSA	Delaware	53 min
Apr 17, 8:42 PM CDT	Special Weather Statement	TSA	Delaware	33 min
Apr 17, 9:02 PM CDT	Special Weather Statement	TSA	Pawnee	43 min
Apr 17, 9:38 PM CDT	Special Weather Statement	TSA	Creek, Osage, Washington	52 min
Apr 17, 10:09 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Okfuskee, Okmulgee, Tulsa	51 min
Apr 17, 10:35 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Osage, Pawnee, Rogers, Tulsa, Washington	55 min
Apr 17, 10:46 PM CDT	Special Weather Statement	TSA	Craig, Nowata	44 min
Apr 17, 11:00 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Okfuskee, Okmulgee, Tulsa	60 min
Apr 17, 11:12 PM CDT	Tornado Warning	TSA	Creek, Okmulgee	33 min
Apr 17, 11:44 PM CDT	Tornado Warning	TSA	Creek, Okmulgee, Rogers, Tulsa, Wagoner	31 min
Apr 17, 11:53 PM CDT	Severe Thunderstorm Warning	TSA	Mayes, Muskogee, Okmulgee, Rogers, Tulsa, Wagoner	52 min
Apr 18, 12:17 AM CDT	Flash Flood Warning	TSA	Creek, Muskogee, Okfuskee, Okmulgee, Rogers, Tulsa and 1 more	4 hr
Apr 18, 12:17 AM CDT	Tornado Warning	TSA	Mayes, Rogers, Tulsa, Wagoner	28 min
Apr 18, 12:38 AM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Delaware, Mayes, Muskogee, Okmulgee and 2 more	67 min
Apr 18, 12:46 AM CDT	Tornado Warning	TSA	Delaware, Mayes	29 min
Apr 18, 1:16 AM CDT	Tornado Warning	TSA	Delaware, Mayes, Ottawa	44 min
Apr 18, 1:53 AM CDT	Tornado Warning	TSA	Adair, Cherokee, Delaware	37 min
Apr 18, 2:19 AM CDT	Severe Thunderstorm Warning	TSA	Adair, Delaware	56 min
Apr 18, 2:39 AM CDT	Tornado Warning	TSA	Adair, Cherokee, Delaware	51 min
Apr 18, 2:46 AM CDT	Special Weather Statement	TSA	McIntosh, Muskogee, Okmulgee, Wagoner	44 min
Apr 18, 3:11 AM CDT	Severe Thunderstorm Warning	TSA	Cherokee, McIntosh, Muskogee, Okmulgee, Wagoner	64 min
Apr 18, 3:16 AM CDT	Flash Flood Warning	TSA	Adair, Cherokee, Delaware, Ottawa	4 hr
Apr 18, 4:28 AM CDT	Areal Flood Warning	TSA	Creek, Muskogee, Okfuskee, Okmulgee, Tulsa, Wagoner	14 hr
Apr 18, 4:55 AM CDT	Areal Flood Warning	TSA	Cherokee, Delaware, Mayes, Muskogee, Rogers, Wagoner	14 hr
Apr 18, 7:15 AM CDT	Areal Flood Warning	TSA	Adair, Cherokee, Delaware	12 hr
Apr 18, 8:23 AM CDT	River Flood Warning	TSA	Cherokee, Delaware	8 hr
Apr 18, 8:37 AM CDT	River Flood Warning	TSA	Okmulgee	4 days
Apr 18, 9:08 AM CDT	River Flood Warning	TSA	Cherokee	48 hr
Apr 18, 11:58 AM CDT	River Flood Warning	TSA	Adair	30 hr
Apr 18, 3:30 PM CDT	Freeze Warning	TSA	Craig, Creek, Nowata, Pawnee, Rogers, Tulsa and 1 more	17 hr

Nearby

Flash Flood Warnings in Oklahoma, 2013 Every flash flood warning in 2013

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.