Alert archive / Oklahoma / Flash Flood Warnings in 2021

Flash Flood Warning 41, NWS Tulsa, OK

July 1, 2021Craig County, Delaware County, Oklahoma

NWS Tulsa, OK issued this flash flood warning at Jul 1, 2021, 5:50 AM CDT for Craig County, Delaware County, Oklahoma. It was in force for 4 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, 2021, 5:50 AM CDT (10:50 UTC)
Expired: Jul 1, 2021, 9:45 AM CDT
In force: 4 hr
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Flood severity: None

Counties Craig County, OK, Delaware County, OK

The radar

The Tulsa radar (KINX), 62 km from the middle of the area, began a volume at 10:50 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

Springfield, MO (KSGF), launched 00:00Z, 10.8 hours before the alert went out and 122 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: 113 J/kg
Mixed-layer CIN: -31 J/kg
Mixed-layer LCL: 836 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: 7 m²/s²
0-3 km storm-relative helicity: 55 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

226 
WGUS54 KTSA 011050
FFWTSA
OKC035-041-011445-
/O.NEW.KTSA.FF.W.0041.210701T1050Z-210701T1445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Tulsa OK
550 AM CDT Thu Jul 1 2021

The National Weather Service in Tulsa has issued a

* Flash Flood Warning for...
  Southern Craig County in northeastern Oklahoma...
  Northern Delaware County in northeastern Oklahoma...

* Until 945 AM CDT.

* At 550 AM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 2 inches of rain 
  have fallen. Additional rainfall amounts of 1 to 2 inches are 
  possible in the warned area. Flash flooding is ongoing or expected 
  to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Vinita...                          Jay...
  Grove...                           Bernice...
  Ketchum...                         Cleora...
  Bernice State Park...              Honey Creek State Park...
  White Oak...                       Zena...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 3668 9543 3667 9501 3663 9462 3640 9461
      3660 9533 3660 9543

FLASH FLOOD...RADAR INDICATED

$$

1 follow-up statement

108 
WGUS74 KTSA 011207
FFSTSA

Flash Flood Statement
National Weather Service Tulsa OK
707 AM CDT Thu Jul 1 2021

OKC035-041-011445-
/O.CON.KTSA.FF.W.0041.000000T0000Z-210701T1445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Craig OK-Delaware OK-
707 AM CDT Thu Jul 1 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 945 AM CDT THIS 
MORNING FOR SOUTHERN CRAIG AND NORTHERN DELAWARE COUNTIES...

At 707 AM CDT, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area. Between 2 and 3 inches of rain have 
fallen per radar estimates. The expected rainfall rate is 1.5 to 2 
inches in 1 hour. Flash flooding is ongoing or expected to begin 
shortly.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar.

IMPACT...Flash flooding of small creeks and streams, urban areas,
         highways, streets and underpasses as well as other poor
         drainage and low-lying areas.

Some locations that will experience flash flooding include...
Vinita...                          Jay...
Grove...                           Bernice...
Ketchum...                         Cleora...
Bernice State Park...              Honey Creek State Park...
White Oak...                       Zena...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 3668 9543 3667 9501 3663 9462 3640 9461
      3660 9533 3660 9543

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1.5-2 INCHES IN 1 HOUR

$$

Lacy

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 30, 9:43 PM CDT	Special Weather Statement	TSA	Tulsa	47 min
Jun 30, 10:20 PM CDT	Areal Flood Advisory	TSA	Creek, Tulsa	115 min
Jul 1, 5:02 AM CDT	Areal Flood Advisory	TSA	Craig, Delaware, Ottawa	3 hr
Jul 1, 7:14 AM CDT	Areal Flood Advisory	TSA	Creek, Osage, Pawnee, Tulsa, Wagoner	3 hr
Jul 1, 7:24 AM CDT	Areal Flood Advisory	TSA	Craig, Delaware, Mayes, Rogers	3 hr
Jul 1, 8:06 AM CDT	Areal Flood Advisory	TSA	Osage, Rogers, Tulsa, Wagoner, Washington	3 hr
Jul 1, 8:16 AM CDT	Areal Flood Advisory	TSA	Muskogee, Wagoner	3 hr
Jul 1, 8:27 AM CDT	Areal Flood Advisory	TSA	Adair, Cherokee	3 hr
Jul 1, 9:30 AM CDT	Flash Flood Warning	TSA	Tulsa, Wagoner	4 hr
Jul 1, 10:40 AM CDT	Flash Flood Warning	TSA	Wagoner	3 hr
Jul 1, 10:57 AM CDT	Areal Flood Advisory	TSA	McIntosh, Muskogee	3 hr
Jul 1, 11:40 AM CDT	Areal Flood Advisory	TSA	Osage, Pawnee	3 hr
Jul 1, 12:02 PM CDT	Areal Flood Advisory	TSA	Creek, Okfuskee, Okmulgee	3 hr
Jul 1, 12:59 PM CDT	Areal Flood Advisory	TSA	McIntosh, Muskogee, Okmulgee	3 hr
Jul 1, 1:42 PM CDT	Areal Flood Warning	TSA	Wagoner	3 hr
Jul 1, 1:51 PM CDT	Areal Flood Warning	TSA	Tulsa, Wagoner	3 hr
Jul 1, 2:16 PM CDT	River Flood Advisory	TSA	Tulsa	4 hr
Jul 1, 2:32 PM CDT	River Flood Advisory	TSA	Muskogee	4 hr
Jul 1, 5:43 PM CDT	River Flood Warning	TSA	Osage, Tulsa	8 hr
Jul 1, 5:50 PM CDT	River Flood Warning	TSA	Tulsa	14 hr
Jul 1, 6:07 PM CDT	River Flood Warning	TSA	Muskogee	8 hr

Nearby

Flash Flood Warnings in Oklahoma, 2021 Every flash flood warning in 2021

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.