Alert archive / Oklahoma / Special Weather Statements in 2021

Special Weather Statement, NWS Norman, OK

June 13, 2021Greer County, Oklahoma

NWS Norman, OK issued this special weather statement at Jun 13, 2021, 12:21 PM CDT for Greer 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: Jun 13, 2021, 12:21 PM CDT (17:21 UTC)
Expired: Jun 13, 2021, 12:45 PM CDT
In force: 24 min
Issued by: NWS Norman, OK

County Greer County, OK

The radar

The Altus AFB radar (KFDR), 87 km from the middle of the area, began a volume at 17:21 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

Amarillo Airport, TX (KAMA), launched 12:00Z, 5.4 hours before the alert went out and 194 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2078 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: -247 m²/s²
0-3 km storm-relative helicity: -150 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

922 
WWUS84 KOUN 131721
SPSOUN

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
1221 PM CDT Sun Jun 13 2021
 
OKZ034-131745-
Greer OK-
1221 PM CDT Sun Jun 13 2021

...SIGNIFICANT WEATHER ADVISORY FOR central Greer County Until 1245
PM CDT...

AT 1217 PM CDT, a strong thunderstorm was located 7 miles southwest
of Willow, moving southeast at 10 MPH.

HAZARDS INCLUDE...
Hail up to the size of nickels... 
Wind gusts to 50 MPH...
Minor flooding in areas of poor drainage... 

This storm will remain over mainly rural areas of central Greer
County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Storm intensity is increasing and severe weather may develop rapidly.
Stay alert and listen for warnings.

&&

LAT...LON 3496 9969 3503 9963 3498 9946 3492 9951
      3486 9959
TIME...MOT...LOC 1717Z 300DEG 9KT 3496 9959 

$$

JP

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 13, 2:59 AM CDT	Special Weather Statement	OUN	Roger Mills	46 min
Jun 13, 3:42 AM CDT	Special Weather Statement	OUN	Beckham, Custer, Greer, Harmon, Jackson, Roger Mills and 1 more	48 min
Jun 13, 5:33 AM CDT	Special Weather Statement	OUN	Caddo, Comanche	27 min
Jun 13, 7:16 AM CDT	Special Weather Statement	OUN	Cleveland	29 min
Jun 13, 10:33 AM CDT	Special Weather Statement	OUN	Greer	27 min
Jun 13, 10:45 AM CDT	Severe Thunderstorm Warning	OUN	Greer, Harmon	45 min
Jun 13, 11:33 AM CDT	Severe Thunderstorm Warning	OUN	Greer	42 min
Jun 13, 12:04 PM CDT	Areal Flood Advisory	OUN	Greer	3 hr
Jun 13, 12:14 PM CDT	Special Weather Statement	OUN	Greer	31 min
Jun 13, 12:42 PM CDT	Flash Flood Warning	OUN	Greer	4 hr
Jun 13, 12:45 PM CDT	Special Weather Statement	OUN	Greer	30 min
Jun 13, 1:11 PM CDT	Heat Advisory	OUN	Atoka, Bryan, Carter, Cleveland, Coal, Garvin and 9 more	9 hr
Jun 13, 1:18 PM CDT	Special Weather Statement	OUN	Greer	27 min
Jun 13, 1:21 PM CDT	Severe Thunderstorm Warning	OUN	Greer	39 min
Jun 13, 1:57 PM CDT	Severe Thunderstorm Warning	OUN	Greer	48 min
Jun 13, 2:40 PM CDT	Severe Thunderstorm Warning	OUN	Greer, Jackson	65 min
Jun 13, 3:16 PM CDT	Severe Thunderstorm Warning	OUN	Jackson, Tillman	59 min
Jun 13, 4:03 PM CDT	Severe Thunderstorm Warning	OUN	Jackson, Kiowa, Tillman	42 min
Jun 13, 4:07 PM CDT	Special Weather Statement	OUN	McClain	23 min
Jun 13, 4:24 PM CDT	Special Weather Statement	OUN	McClain	36 min
Jun 13, 4:31 PM CDT	Special Weather Statement	OUN	Stephens	29 min
Jun 13, 4:44 PM CDT	Areal Flood Warning	OUN	Greer	2 hr
Jun 13, 4:46 PM CDT	Severe Thunderstorm Warning	OUN	Jackson, Kiowa, Tillman	44 min
Jun 13, 4:56 PM CDT	Special Weather Statement	OUN	Grady	34 min
Jun 13, 5:06 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Canadian, Grady	39 min
Jun 13, 5:25 PM CDT	Severe Thunderstorm Warning	OUN	Jackson, Tillman	50 min
Jun 13, 5:34 PM CDT	River Flood Warning	OUN	Greer, Jackson	2 hr
Jun 13, 5:42 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Canadian, Grady	33 min
Jun 13, 5:54 PM CDT	Special Weather Statement	OUN	Garvin	36 min
Jun 13, 6:03 PM CDT	Severe Thunderstorm Warning	OUN	Garvin, Grady, McClain, Stephens	42 min
Jun 13, 6:07 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Kingfisher	53 min
Jun 13, 6:11 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Canadian	36 min
Jun 13, 6:19 PM CDT	Special Weather Statement	OUN	Blaine	26 min
Jun 13, 6:25 PM CDT	Special Weather Statement	OUN	Canadian	35 min
Jun 13, 6:38 PM CDT	Areal Flood Advisory	OUN	Garvin, Grady, Stephens	3 hr
Jun 13, 6:39 PM CDT	Severe Thunderstorm Warning	OUN	Grady, Stephens	51 min
Jun 13, 6:43 PM CDT	Special Weather Statement	OUN	Murray	32 min
Jun 13, 6:46 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Major	44 min
Jun 13, 6:50 PM CDT	Special Weather Statement	OUN	Grady	25 min
Jun 13, 6:56 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Comanche, Grady	49 min
Jun 13, 10:57 AM CDT	Special Weather Statement	OUN	Foard	33 min
Jun 13, 6:00 PM CDT	Severe Thunderstorm Warning	OUN	Wichita, Wilbarger	45 min
Jun 13, 6:41 PM CDT	Severe Thunderstorm Warning	OUN	Baylor, Wilbarger	49 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.