Alert archive / Oklahoma / Special Weather Statements in 2021

Special Weather Statement, NWS Tulsa, OK

October 13, 2021Cherokee County, Delaware County, Oklahoma

NWS Tulsa, OK issued this special weather statement at Oct 13, 2021, 9:21 AM CDT for Cherokee County, Delaware County, Oklahoma. It was in force for 24 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Oct 13, 2021, 9:21 AM CDT (14:21 UTC)
Expired: Oct 13, 2021, 9:45 AM CDT
In force: 24 min
Issued by: NWS Tulsa, OK
Hail: 0.00 in
Wind: 40

Counties Cherokee County, OK, Delaware County, OK

The radar

The Tulsa radar (KINX), 68 km from the middle of the area, began a volume at 14:22 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, 2.4 hours before the alert went out and 115 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: 722 J/kg
Mixed-layer CIN: -164 J/kg
Mixed-layer LCL: 646 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 440 m²/s²
0-3 km storm-relative helicity: 590 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.7

Open this sounding in Storm Lab

The text

As transmitted.

700 
WWUS84 KTSA 131421
SPSTSA

Special Weather Statement
National Weather Service Tulsa OK
921 AM CDT Wed Oct 13 2021
 
OKZ062-063-068-069-131445-
Adair OK-Cherokee OK-Delaware OK-Mayes OK-
921 AM CDT Wed Oct 13 2021

...Strong thunderstorms will impact portions of Delaware,
southeastern Mayes, northwestern Adair and northern Cherokee Counties
through 945 AM CDT...

At 921 AM CDT, Doppler radar indicated strong thunderstorms along a
line extending from 5 miles southeast of Cleora to 6 miles south of
Hulbert. Movement was east at 45 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects.

Locations in or near the path include...
Tahlequah...                      Jay...
Grove...                          Colcord...
Kansas...                         Hulbert...
Bernice...                        Disney...
Oaks...                           Honey Creek State Park...
Peggs...                          Rose...
Bernice State Park...             Leach...
Cleora...                         Chloeta...
Scraper...                        Twin Oaks...
Eldon...                          Proctor...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

&&

LAT...LON 3650 9462 3630 9459 3595 9470 3581 9519
      3581 9522 3663 9497 3667 9462
TIME...MOT...LOC 1421Z 250DEG 39KT 3654 9489 3584 9514 

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

$$

Lacy

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 13, 4:48 AM CDT	Special Weather Statement	TSA	Osage	42 min
Oct 13, 5:27 AM CDT	Special Weather Statement	TSA	Osage, Pawnee	48 min
Oct 13, 6:03 AM CDT	Special Weather Statement	TSA	Creek, Osage, Washington	42 min
Oct 13, 6:39 AM CDT	Special Weather Statement	TSA	Creek, Nowata, Tulsa, Washington	66 min
Oct 13, 6:48 AM CDT	Special Weather Statement	TSA	Okfuskee	57 min
Oct 13, 7:29 AM CDT	Special Weather Statement	TSA	Craig	46 min
Oct 13, 7:34 AM CDT	Special Weather Statement	TSA	Okmulgee, Rogers, Tulsa	41 min
Oct 13, 8:08 AM CDT	Special Weather Statement	TSA	Mayes, Rogers	52 min
Oct 13, 8:15 AM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Pittsburg	45 min
Oct 13, 8:18 AM CDT	Special Weather Statement	TSA	Craig, Ottawa	42 min
Oct 13, 8:42 AM CDT	Special Weather Statement	TSA	Muskogee, Wagoner	48 min
Oct 13, 8:48 AM CDT	Special Weather Statement	TSA	Mayes	42 min
Oct 13, 8:52 AM CDT	Special Weather Statement	TSA	McIntosh	23 min
Oct 13, 9:10 AM CDT	Special Weather Statement	TSA	Haskell	50 min
Oct 13, 9:17 AM CDT	Special Weather Statement	TSA	Cherokee	28 min
Oct 13, 9:39 AM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee	13 min
Oct 13, 9:46 AM CDT	Special Weather Statement	TSA	Adair	44 min
Oct 13, 9:49 AM CDT	Special Weather Statement	TSA	Haskell, Sequoyah	41 min
Oct 13, 10:22 AM CDT	Special Weather Statement	TSA	Sequoyah	38 min
Oct 13, 3:39 PM CDT	Special Weather Statement	TSA	Choctaw, Pushmataha	66 min
Oct 13, 4:19 PM CDT	Areal Flood Advisory	TSA	Haskell, Latimer, LeFlore, Pushmataha	3 hr
Oct 13, 4:22 PM CDT	Severe Thunderstorm Warning	TSA	Choctaw, Pushmataha	32 min
Oct 13, 4:51 PM CDT	Special Weather Statement	TSA	Latimer, LeFlore	39 min
Oct 13, 4:57 PM CDT	Special Weather Statement	TSA	Pushmataha	63 min
Oct 13, 5:45 PM CDT	Areal Flood Advisory	TSA	Haskell, LeFlore, Sequoyah	3 hr
Oct 13, 5:24 PM CDT	Special Weather Statement	TSA	Sebastian	51 min
Oct 13, 6:01 PM CDT	Tornado Warning	TSA	Franklin, Sebastian	44 min

Nearby

Special Weather Statements in Oklahoma, 2021 Every special weather statement 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.