Alert archive / Oklahoma / Areal Flood Warnings in 2017
Areal Flood Warning 21, NWS Tulsa, OK
NWS Tulsa, OK issued this areal flood warning at Aug 13, 2017, 8:13 AM CDT for Sequoyah 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 outline as issued.
The facts
- Issued
- Aug 13, 2017, 8:13 AM CDT (13:13 UTC)
- Expired
- Aug 13, 2017, 11:15 AM CDT
- In force
- 3 hr
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
- Flood severity
- None
County Sequoyah County, OK
The radar
The Western Arkansas radar (KSRX), 33 km from the middle of the area, began a volume at 13:15 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 12:00Z, 1.2 hours before the alert went out and 189 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 643 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- -3 m²/s²
- 0-3 km storm-relative helicity
- 65 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
648
WGUS44 KTSA 131313
FLWTSA
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Tulsa OK
813 AM CDT SUN AUG 13 2017
OKC135-131615-
/O.NEW.KTSA.FA.W.0021.170813T1313Z-170813T1615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sequoyah OK-
813 AM CDT SUN AUG 13 2017
The National Weather Service in Tulsa has issued a
* Flood Warning for...
Central Sequoyah County in east central Oklahoma...
* Until 1115 AM CDT
* At 807 AM CDT, Doppler radar indicated rainfall amounts of 4 to 6
inches has fallen across the area. Minor flooding is still
occurring in the advisory area.
* Some locations that may experience flooding include...
Sallisaw... Muldrow...
Gans... Marble City...
Brushy Lake State Park... Brushy...
Mc Key... Cottonwood...
This includes Interstate 40 in Oklahoma between mile markers 302 and
322.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 3533 9457 3533 9460 3530 9463 3529 9466
3532 9468 3536 9474 3536 9477 3532 9480
3533 9482 3536 9483 3537 9484 3535 9489
3558 9489 3558 9454 3530 9454
$$1 follow-up statement
346
WGUS84 KTSA 131426
FLSTSA
Flood Statement
National Weather Service Tulsa OK
926 AM CDT SUN AUG 13 2017
OKC135-131615-
/O.CON.KTSA.FA.W.0021.000000T0000Z-170813T1615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sequoyah OK-
926 AM CDT SUN AUG 13 2017
...A FLOOD WARNING REMAINS IN EFFECT UNTIL 1115 AM CDT FOR CENTRAL
SEQUOYAH COUNTY...
At 923 AM CDT, Law Enforcement indicated that flooding is still
ongoing across the warned area. Several highways remain closed
including portions of Interstate 40.
Some locations that may experience flooding include...
Sallisaw... Muldrow...
Gans... Marble City...
Brushy Lake State Park... Brushy...
Mc Key... Cottonwood...
This includes Interstate 40 in Oklahoma between mile markers 302 and
322.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.
&&
LAT...LON 3533 9457 3533 9460 3530 9463 3529 9466
3532 9468 3536 9474 3536 9477 3532 9480
3533 9482 3536 9483 3537 9484 3535 9489
3558 9489 3558 9454 3530 9454
$$The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 13, 2:20 AM CDT | Areal Flood Advisory | TSA | McIntosh | 3 hr |
| Aug 13, 3:25 AM CDT | Areal Flood Advisory | TSA | Haskell, LeFlore, Muskogee, Sequoyah | 3 hr |
| Aug 13, 4:23 AM CDT | Flash Flood Warning | TSA | Sequoyah | 4 hr |
| Aug 13, 6:32 AM CDT | Areal Flood Advisory | TSA | Haskell, Latimer, LeFlore | 3 hr |
| Aug 13, 11:12 AM CDT | Areal Flood Warning | TSA | Sequoyah | 27 hr |
| Aug 13, 11:14 AM CDT | River Flood Advisory | TSA | Sequoyah | 36 hr |
Nearby
Areal Flood Warnings in Oklahoma, 2017Every areal 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.