Alert archive / Oklahoma / Special Weather Statements in 2020

Special Weather Statement, NWS Norman, OK

July 9, 2020Grant County, Oklahoma

NWS Norman, OK issued this special weather statement at Jul 9, 2020, 10:10 PM CDT for Grant County, Oklahoma. It was in force for 35 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: Jul 9, 2020, 10:10 PM CDT (03:10 UTC)
Expired: Jul 9, 2020, 10:45 PM CDT
In force: 35 min
Issued by: NWS Norman, OK

County Grant County, OK

The radar

The Vance AFB radar (KVNX), 37 km from the middle of the area, began a volume at 03:11 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

Norman, OK (KOUN), launched 00:00Z, 3.2 hours before the alert went out and 185 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: 3089 J/kg
Mixed-layer CIN: -34 J/kg
Mixed-layer LCL: 978 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 139 m²/s²
0-3 km storm-relative helicity: 469 m²/s²
Significant tornado parameter: 3.8
Supercell composite: 25.8

Open this sounding in Storm Lab

The text

As transmitted.

895 
WWUS84 KOUN 100310
SPSOUN

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
1010 PM CDT Thu Jul 9 2020
 
OKZ007-100345-
Grant OK-
1010 PM CDT Thu Jul 9 2020

...SIGNIFICANT WEATHER ADVISORY FOR northeastern Grant County Until
1045 PM CDT...

AT 1007 PM CDT, a strong thunderstorm was located 4 miles southeast
of Wakita, moving east at 15 MPH.

HAZARDS INCLUDE...
Hail up to the size of nickels... 
Wind gusts to 50 MPH...

LAT...LON 3674 9759 3674 9788 3695 9798 3700 9771
      3700 9766
TIME...MOT...LOC 0307Z 259DEG 11KT 3684 9787 

$$

..speg.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 9, 10:54 PM CDT	Special Weather Statement	OUN	Grant	36 min
Jul 9, 10:56 PM CDT	Special Weather Statement	OUN	Noble	34 min
Jul 9, 11:16 PM CDT	Special Weather Statement	OUN	Grant	29 min
Jul 10, 6:32 AM CDT	Special Weather Statement	OUN	Grant	28 min
Jul 10, 6:39 AM CDT	Severe Thunderstorm Warning	OUN	Grant, Kay	51 min
Jul 10, 7:08 AM CDT	Special Weather Statement	OUN	Garfield, Grant, Kay, Noble	52 min
Jul 10, 7:13 AM CDT	Severe Thunderstorm Warning	OUN	Garfield, Grant, Kay, Noble	47 min
Jul 10, 7:45 AM CDT	Severe Thunderstorm Warning	OUN	Garfield, Noble	45 min
Jul 10, 7:54 AM CDT	Special Weather Statement	OUN	Garfield	21 min
Jul 10, 8:00 AM CDT	Severe Thunderstorm Warning	OUN	Grant, Kay	30 min
Jul 10, 8:02 AM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Garfield, Major	43 min
Jul 10, 8:11 AM CDT	Special Weather Statement	OUN	Alfalfa, Grant	34 min
Jul 10, 8:29 AM CDT	Severe Thunderstorm Warning	OUN	Garfield, Logan, Noble, Payne	61 min
Jul 10, 8:34 AM CDT	Areal Flood Advisory	OUN	Grant	3 hr
Jul 10, 8:41 AM CDT	Special Weather Statement	OUN	Alfalfa, Major, Woods	49 min
Jul 10, 8:43 AM CDT	Special Weather Statement	OUN	Canadian	32 min
Jul 10, 8:46 AM CDT	Special Weather Statement	OUN	Kingfisher	29 min
Jul 10, 8:50 AM CDT	Severe Thunderstorm Warning	OUN	Canadian, Kingfisher	25 min
Jul 10, 8:55 AM CDT	Areal Flood Advisory	OUN	Garfield	3 hr
Jul 10, 9:05 AM CDT	Severe Thunderstorm Warning	OUN	Kingfisher, Logan	40 min
Jul 10, 9:11 AM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Blaine, Garfield, Kingfisher, Major	49 min
Jul 10, 9:24 AM CDT	Severe Thunderstorm Warning	OUN	Blaine, Caddo, Canadian, Garfield, Kingfisher	66 min
Jul 10, 9:29 AM CDT	Areal Flood Advisory	OUN	Kay	2 hr
Jul 10, 9:39 AM CDT	Special Weather Statement	OUN	Oklahoma	36 min
Jul 10, 9:53 AM CDT	Severe Thunderstorm Warning	OUN	Canadian, Logan, Oklahoma	52 min
Jul 10, 10:09 AM CDT	Areal Flood Advisory	OUN	Canadian, Oklahoma	3 hr
Jul 10, 10:21 AM CDT	Severe Thunderstorm Warning	OUN	Caddo, Canadian, Grady	54 min
Jul 10, 10:38 AM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Oklahoma	67 min
Jul 10, 10:45 AM CDT	Severe Thunderstorm Warning	OUN	Logan, Oklahoma	45 min
Jul 10, 11:12 AM CDT	Flash Flood Warning	OUN	Canadian, Oklahoma	3 hr
Jul 10, 11:12 AM CDT	Severe Thunderstorm Warning	OUN	Canadian, Garvin, Grady, McClain, Stephens	48 min
Jul 10, 11:13 AM CDT	Severe Thunderstorm Warning	OUN	Cleveland, McClain, Oklahoma, Pottawatomie	47 min
Jul 10, 11:22 AM CDT	Areal Flood Advisory	OUN	Cleveland, McClain	113 min
Jul 10, 11:30 AM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Garvin, McClain, Pontotoc, Pottawatomie, Seminole	45 min
Jul 10, 11:59 AM CDT	Severe Thunderstorm Warning	OUN	Garvin, McClain, Murray	46 min
Jul 10, 12:20 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Garvin, Murray	40 min
Jul 10, 12:59 PM CDT	Special Weather Statement	OUN	Carter, Murray	46 min
Jul 10, 1:14 PM CDT	Heat Advisory	OUN	Alfalfa, Atoka, Beckham, Bryan, Caddo, Canadian and 37 more	3 days
Jul 10, 1:34 PM CDT	Special Weather Statement	OUN	Johnston, Love, Marshall	41 min
Jul 10, 1:40 PM CDT	Special Weather Statement	OUN	Hughes	50 min
Jul 10, 2:50 PM CDT	Special Weather Statement	OUN	Bryan	25 min
Jul 10, 3:00 PM CDT	Heat Advisory	OUN	Atoka, Bryan, Love, Marshall	22 hr

Nearby

Special Weather Statements in Oklahoma, 2020 Every special weather statement in 2020

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.