Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 607, NWS Norman, OK

July 29, 2013Dewey County, Major County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jul 29, 2013, 9:28 PM CDT for Dewey County, Major County, Oklahoma. It was in force for 47 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 29, 2013, 9:28 PM CDT (02:28 UTC)
Expired: Jul 29, 2013, 10:15 PM CDT
In force: 47 min
Issued by: NWS Norman, OK
Area: Storm-based polygon

Counties Dewey County, OK, Major County, OK

The radar

The Vance AFB radar (KVNX), 82 km from the middle of the area, began a volume at 02:29 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 29, 2:38 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 2.5 hours before the alert went out and 161 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: 2590 J/kg
Mixed-layer CIN: -36 J/kg
Mixed-layer LCL: 856 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 156 m²/s²
0-3 km storm-relative helicity: 292 m²/s²
Significant tornado parameter: 2.0
Supercell composite: 13.9

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

147 
WUUS54 KOUN 300228
SVROUN
OKC043-093-300315-
/O.NEW.KOUN.SV.W.0607.130730T0228Z-130730T0315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORMAN OK
928 PM CDT MON JUL 29 2013

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN DEWEY COUNTY IN NORTHWEST OKLAHOMA...
  SOUTHWESTERN MAJOR COUNTY IN NORTHWEST OKLAHOMA...

* UNTIL 1015 PM CDT

* AT 925 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM LOCATED 4 MILES NORTH OF CHESTER...MOVING
  SOUTHEAST AT 30 MPH.

HAZARDS IN THE WARNING INCLUDE...
QUARTER SIZE HAIL...
DAMAGING WINDS IN EXCESS OF 60 MPH...

* LOCATIONS IMPACTED INCLUDE...
  SEILING...ORION...CHESTER AND HUCMAC. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE INSIDE A STURDY BUILDING UNTIL THE STORM HAS PASSED.
&&

LAT...LON 3624 9855 3616 9860 3616 9864 3610 9864
      3603 9868 3598 9889 3620 9896 3630 9896
      3643 9880
TIME...MOT...LOC 0228Z 321DEG 26KT 3628 9891 

$$

CMS

1 follow-up statement

101 
WWUS54 KOUN 300300
SVSOUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
1000 PM CDT MON JUL 29 2013

OKC043-093-300315-
/O.CON.KOUN.SV.W.0607.000000T0000Z-130730T0315Z/
MAJOR OK-DEWEY OK-
1000 PM CDT MON JUL 29 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT
FOR SOUTHWESTERN MAJOR AND NORTHEASTERN DEWEY COUNTIES...

AT 956 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A SEVERE THUNDERSTORM LOCATED NEAR ORION...MOVING SOUTHEAST AT
20 MPH.

HAZARDS IN THE WARNING INCLUDE...
QUARTER SIZE HAIL...
DAMAGING WINDS IN EXCESS OF 60 MPH...

LOCATIONS IMPACTED INCLUDE...
SEILING...ORION...CHESTER AND HUCMAC. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE INSIDE A STURDY BUILDING UNTIL THE STORM HAS PASSED.
&&

LAT...LON 3624 9855 3616 9860 3616 9864 3610 9864
      3603 9868 3598 9889 3619 9896 3621 9895
      3629 9890 3632 9880
TIME...MOT...LOC 0256Z 318DEG 18KT 3620 9881 

$$

CMS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 29, 7:01 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Woods	44 min
Jul 29, 7:03 PM CDT	Special Weather Statement	OUN	Harper	27 min
Jul 29, 7:21 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Garfield, Grant	24 min
Jul 29, 7:23 PM CDT	Severe Thunderstorm Warning	OUN	Harper, Woodward	52 min
Jul 29, 7:29 PM CDT	Severe Thunderstorm Warning	OUN	Woods, Woodward	46 min
Jul 29, 7:57 PM CDT	Severe Thunderstorm Warning	OUN	Ellis, Woodward	48 min
Jul 29, 8:05 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Major, Woods, Woodward	40 min
Jul 29, 8:43 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Major, Woods, Woodward	47 min
Jul 29, 8:47 PM CDT	Severe Thunderstorm Warning	OUN	Ellis, Harper, Woodward	43 min
Jul 29, 9:10 PM CDT	Areal Flood Advisory	OUN	Alfalfa, Garfield, Grant, Woods	3 hr
Jul 29, 9:32 PM CDT	Severe Thunderstorm Warning	OUN	Ellis	43 min
Jul 29, 9:37 PM CDT	Special Weather Statement	OUN	Woodward	38 min
Jul 29, 10:13 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Dewey, Major	47 min
Jul 29, 10:17 PM CDT	Areal Flood Advisory	OUN	Ellis, Garfield, Major, Noble, Woods, Woodward	3 hr
Jul 29, 10:20 PM CDT	Severe Thunderstorm Warning	OUN	Ellis	40 min
Jul 29, 10:27 PM CDT	Special Weather Statement	OUN	Dewey	48 min
Jul 29, 10:40 PM CDT	Special Weather Statement	OUN	Blaine, Canadian, Kingfisher, Lincoln, Logan, Oklahoma and 1 more	35 min
Jul 29, 10:59 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Custer, Dewey, Kingfisher	46 min
Jul 29, 11:17 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Caddo, Canadian, Kingfisher	43 min
Jul 29, 11:23 PM CDT	Severe Thunderstorm Warning	OUN	Ellis, Roger Mills	52 min
Jul 29, 11:36 PM CDT	Special Weather Statement	OUN	Custer, Roger Mills, Washita	39 min
Jul 29, 11:47 PM CDT	Areal Flood Advisory	OUN	Blaine, Garfield, Kingfisher, Lincoln, Logan, Major and 2 more	3 hr
Jul 29, 11:55 PM CDT	Severe Thunderstorm Warning	OUN	Logan, Oklahoma, Payne	50 min
Jul 30, 12:00 AM CDT	Severe Thunderstorm Warning	OUN	Canadian, Kingfisher	45 min
Jul 30, 12:17 AM CDT	Special Weather Statement	OUN	Beckham, Custer, Dewey, Roger Mills, Washita	43 min
Jul 30, 12:39 AM CDT	Special Weather Statement	OUN	Cleveland, Grady, McClain	51 min
Jul 30, 12:40 AM CDT	Flash Flood Warning	OUN	Kingfisher, Logan, Payne	3 hr
Jul 30, 12:49 AM CDT	Special Weather Statement	OUN	Oklahoma	41 min
Jul 30, 12:59 AM CDT	Areal Flood Advisory	OUN	Canadian, Grady, Oklahoma	3 hr
Jul 30, 12:59 AM CDT	Special Weather Statement	OUN	Beckham, Custer, Dewey, Roger Mills, Washita	46 min
Jul 30, 1:02 AM CDT	Severe Thunderstorm Warning	OUN	Custer, Washita	43 min
Jul 30, 1:44 AM CDT	Special Weather Statement	OUN	Custer, Washita	46 min
Jul 30, 2:03 AM CDT	Areal Flood Advisory	OUN	Beckham, Custer, Dewey, Ellis, Roger Mills, Washita	117 min
Jul 30, 2:11 AM CDT	Special Weather Statement	OUN	Washita	34 min
Jul 30, 2:36 AM CDT	Areal Flood Advisory	OUN	Cleveland, Grady, Hughes, Lincoln, McClain, Oklahoma and 2 more	3 hr
Jul 30, 2:58 AM CDT	River Flood Warning	OUN	Dewey, Major, Woodward	5 hr
Jul 30, 4:02 AM CDT	Areal Flood Advisory	OUN	Beckham, Kiowa, Roger Mills, Washita	3 hr
Jul 30, 8:40 AM CDT	River Flood Warning	OUN	Major, Woods, Woodward	6 hr
Jul 30, 5:09 PM CDT	Special Weather Statement	OUN	Hughes	51 min
Jul 30, 6:47 PM CDT	Special Weather Statement	OUN	Hughes
Jul 30, 6:54 PM CDT	Severe Thunderstorm Warning	OUN	Coal, Pontotoc	51 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2013 Every severe thunderstorm warning in 2013

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.