Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 621, NWS Norman, OK

July 8, 2016Cleveland County, Garvin County, McClain County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jul 8, 2016, 6:18 PM CDT for Cleveland County, Garvin County, McClain County, Oklahoma. It was in force for 42 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 8, 2016, 6:18 PM CDT (23:18 UTC)
Expired: Jul 8, 2016, 7:00 PM CDT
In force: 42 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Cleveland County, OK, Garvin County, OK, McClain County, OK

The radar

The Norman radar (KTLX), 47 km from the middle of the area, began a volume at 23:20 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 8, 4:55 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 11.3 hours before the alert went out and 31 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: 1829 J/kg
Mixed-layer CIN: -342 J/kg
Mixed-layer LCL: 1153 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 92 m²/s²
0-3 km storm-relative helicity: 360 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.9

Open this sounding in Storm Lab

The text

As transmitted.

711 
WUUS54 KOUN 082318
SVROUN
OKC027-049-087-090000-
/O.NEW.KOUN.SV.W.0621.160708T2318Z-160709T0000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORMAN OK
618 PM CDT FRI JUL 8 2016

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN MCCLAIN COUNTY IN CENTRAL OKLAHOMA...
  SOUTHEASTERN CLEVELAND COUNTY IN CENTRAL OKLAHOMA...
  NORTHWESTERN GARVIN COUNTY IN SOUTHERN OKLAHOMA...

* UNTIL 700 PM CDT

* AT 618 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM NEAR GOLDSBY TO NEAR LINDSAY...MOVING EAST AT 10
  MPH.

  HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE 
           TO ROOFS...SIDING...AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  SOUTHERN NORMAN...PURCELL...NOBLE...SLAUGHTERVILLE...LINDSAY...
  LEXINGTON...GOLDSBY...MAYSVILLE...DIBBLE...WAYNE...WASHINGTON...
  COLE...CRINER...SOUTHWESTERN LAKE THUNDERBIRD...
  PAYNE AND ERIN SPRINGS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3476 9742 3476 9767 3496 9767 3521 9751
      3521 9714
TIME...MOT...LOC 2318Z 274DEG 11KT 3511 9747 3484 9765 

HAIL...1.00IN
WIND...60MPH
 
$$

..SPEG.

1 follow-up statement

995 
WWUS54 KOUN 082356
SVSOUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
656 PM CDT FRI JUL 8 2016

OKC027-049-087-090006-
/O.EXP.KOUN.SV.W.0621.000000T0000Z-160709T0000Z/
MCCLAIN OK-CLEVELAND OK-GARVIN OK-
656 PM CDT FRI JUL 8 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN MCCLAIN...
SOUTHEASTERN CLEVELAND AND NORTHWESTERN GARVIN COUNTIES WILL EXPIRE
AT 700 PM CDT...
            
THE STORMS WHICH PROMPTED THE WARNING HAVE WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.  HOWEVER GUSTY WINDS
AND HEAVY RAIN ARE STILL POSSIBLE WITH THESE THUNDERSTORMS.

LAT...LON 3476 9742 3476 9767 3496 9767 3521 9751
      3521 9714
TIME...MOT...LOC 2355Z 274DEG 11KT 3511 9747 3484 9765 

$$

..SPEG.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 8, 12:40 AM CDT	Severe Thunderstorm Warning	OUN	Ellis	50 min
Jul 8, 12:47 AM CDT	Special Weather Statement	OUN	Harper	43 min
Jul 8, 1:25 AM CDT	Special Weather Statement	OUN	Woodward	35 min
Jul 8, 1:30 AM CDT	Severe Thunderstorm Warning	OUN	Ellis, Woodward	60 min
Jul 8, 1:49 AM CDT	Special Weather Statement	OUN	Harmon	41 min
Jul 8, 2:01 AM CDT	Special Weather Statement	OUN	Dewey	29 min
Jul 8, 2:24 AM CDT	Special Weather Statement	OUN	Dewey	51 min
Jul 8, 2:59 AM CDT	Special Weather Statement	OUN	Dewey	46 min
Jul 8, 4:32 AM CDT	Special Weather Statement	OUN	Blaine, Major	43 min
Jul 8, 5:14 AM CDT	Special Weather Statement	OUN	Kingfisher	31 min
Jul 8, 5:25 AM CDT	Special Weather Statement	OUN	Grant	35 min
Jul 8, 5:51 AM CDT	Special Weather Statement	OUN	Kingfisher	24 min
Jul 8, 5:53 AM CDT	Special Weather Statement	OUN	Noble	37 min
Jul 8, 5:57 AM CDT	Special Weather Statement	OUN	Kay	33 min
Jul 8, 6:26 AM CDT	Special Weather Statement	OUN	Logan	34 min
Jul 8, 6:46 AM CDT	Special Weather Statement	OUN	Noble	29 min
Jul 8, 7:02 AM CDT	Special Weather Statement	OUN	Logan, Noble, Oklahoma, Payne	28 min
Jul 8, 7:24 AM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Oklahoma	36 min
Jul 8, 7:33 AM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Logan, Payne	42 min
Jul 8, 7:57 AM CDT	Severe Thunderstorm Warning	OUN	Lincoln	48 min
Jul 8, 8:12 AM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Payne	33 min
Jul 8, 9:08 AM CDT	Special Weather Statement	OUN	Lincoln	37 min
Jul 8, 9:10 AM CDT	Special Weather Statement	OUN	Lincoln	35 min
Jul 8, 3:48 PM CDT	Special Weather Statement	OUN	Custer	42 min
Jul 8, 3:54 PM CDT	Special Weather Statement	OUN	Custer	51 min
Jul 8, 3:59 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Custer	46 min
Jul 8, 4:10 PM CDT	Severe Thunderstorm Warning	OUN	Custer, Roger Mills	40 min
Jul 8, 4:14 PM CDT	Severe Thunderstorm Warning	OUN	Beckham	46 min
Jul 8, 4:30 PM CDT	Special Weather Statement	OUN	Canadian	30 min
Jul 8, 4:41 PM CDT	Areal Flood Advisory	OUN	Custer	3 hr
Jul 8, 4:41 PM CDT	Severe Thunderstorm Warning	OUN	Canadian	49 min
Jul 8, 4:46 PM CDT	Areal Flood Advisory	OUN	Beckham	3 hr
Jul 8, 4:56 PM CDT	Severe Thunderstorm Warning	OUN	Beckham	49 min
Jul 8, 4:58 PM CDT	Flash Flood Warning	OUN	Canadian, Oklahoma	3 hr
Jul 8, 5:01 PM CDT	Severe Thunderstorm Warning	OUN	Custer	44 min
Jul 8, 5:18 PM CDT	Flash Flood Warning	OUN	Beckham	117 min
Jul 8, 5:23 PM CDT	Areal Flood Advisory	OUN	Custer	3 hr
Jul 8, 5:24 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Greer	51 min
Jul 8, 5:45 PM CDT	Special Weather Statement	OUN	Oklahoma	30 min
Jul 8, 5:51 PM CDT	Severe Thunderstorm Warning	OUN	Jackson, Tillman	39 min
Jul 8, 5:58 PM CDT	Flash Flood Warning	OUN	Lincoln, Oklahoma	2 hr
Jul 8, 5:58 PM CDT	Severe Thunderstorm Warning	OUN	Oklahoma	47 min
Jul 8, 6:10 PM CDT	Special Weather Statement	OUN	Cleveland, McClain	35 min
Jul 8, 6:15 PM CDT	Severe Thunderstorm Warning	OUN	Greer, Kiowa	45 min
Jul 8, 6:18 PM CDT	Areal Flood Advisory	OUN	Cleveland, McClain, Oklahoma	3 hr
Jul 8, 6:23 PM CDT	Severe Thunderstorm Warning	OUN	Jackson, Tillman	37 min
Jul 8, 6:24 PM CDT	Severe Thunderstorm Warning	OUN	Kiowa	51 min
Jul 8, 6:34 PM CDT	Areal Flood Advisory	OUN	Greer, Jackson, Kiowa, Tillman	3 hr
Jul 8, 6:51 PM CDT	Flash Flood Warning	OUN	Jackson, Kiowa	3 hr
Jul 8, 6:55 PM CDT	Severe Thunderstorm Warning	OUN	Jackson, Kiowa	50 min
Jul 8, 6:59 PM CDT	Flash Flood Warning	OUN	Cleveland, Lincoln, McClain, Oklahoma, Pottawatomie	3 hr

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2016 Every severe thunderstorm warning in 2016

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.