Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 521, NWS Norman, OK

June 15, 2017Kay County, Noble County, Payne County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jun 15, 2017, 9:57 PM CDT for Kay County, Noble County, Payne County, Oklahoma. It was in force for 31 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 15, 2017, 9:57 PM CDT (02:57 UTC)
Expired: Jun 15, 2017, 10:28 PM CDT
In force: 31 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Kay County, OK, Noble County, OK, Payne County, OK

The radar

The Vance AFB radar (KVNX), 111 km from the middle of the area, began a volume at 02:59 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
Jun 15, 7:07 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 3.0 hours before the alert went out and 152 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: 2783 J/kg
Mixed-layer CIN: -101 J/kg
Mixed-layer LCL: 1598 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: -31 m²/s²
0-3 km storm-relative helicity: 58 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -1.1

Open this sounding in Storm Lab

The text

As transmitted.

062 
WUUS54 KOUN 160257
SVROUN
OKC071-103-119-160345-
/O.NEW.KOUN.SV.W.0521.170616T0257Z-170616T0345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Norman OK
957 PM CDT THU JUN 15 2017

The National Weather Service in Norman has issued a

* Severe Thunderstorm Warning for...
  Kay County in northern Oklahoma...
  Noble County in northern Oklahoma...
  Central Payne County in central Oklahoma...

* Until 1045 PM CDT

* At 957 PM CDT, severe thunderstorms were located along a line
  extending from 8 miles south of Billings to 9 miles west of
  Ralston, moving southeast at 45 mph.

  HAZARD...60 mph wind gusts and penny size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Expect damage to roofs, siding, and trees. 

* Locations impacted include...
  Stillwater, Ponca City, Blackwell, Perry, Tonkawa, Newkirk, Yale,
  Morrison, Glencoe, Kaw City, Red Rock, Marland, Braman, Kildare,
  Kaw Lake, Lake Mcmurtry, Quay, Lake Carl Blackwell, Chilocco and
  Hardy.

This includes Interstate 35 between mile markers 178 and 235.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3678 9675 3677 9682 3674 9683 3675 9689
      3668 9693 3668 9706 3659 9706 3660 9691
      3658 9689 3651 9703 3633 9703 3633 9692
      3625 9692 3624 9682 3616 9682 3616 9662
      3599 9662 3618 9744 3699 9741 3700 9675
TIME...MOT...LOC 0257Z 299DEG 39KT 3642 9740 3653 9690 

HAIL...0.75IN
WIND...60MPH
 
$$

30

1 follow-up statement

007 
WWUS54 KOUN 160328
SVSOUN

Severe Weather Statement
National Weather Service Norman OK
1028 PM CDT THU JUN 15 2017

OKC071-103-119-160338-
/O.CAN.KOUN.SV.W.0521.000000T0000Z-170616T0345Z/
Kay OK-Noble OK-Payne OK-
1028 PM CDT THU JUN 15 2017

...THE SEVERE THUNDERSTORM WARNING FOR KAY...NOBLE AND CENTRAL PAYNE
COUNTIES IS CANCELLED...
    
The storms which prompted the warning have moved out of the area.
Therefore the warning has been cancelled.  However gusty winds are
still possible.

LAT...LON 3678 9675 3677 9682 3674 9683 3675 9689
      3668 9693 3668 9706 3659 9706 3660 9691
      3658 9689 3651 9703 3633 9703 3633 9692
      3625 9692 3624 9682 3616 9682 3616 9662
      3599 9662 3618 9744 3699 9741 3700 9675
TIME...MOT...LOC 0325Z 299DEG 39KT 3627 9706 3638 9656 

$$

30

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 15, 7:47 PM CDT	Special Weather Statement	OUN	Blaine, Dewey	43 min
Jun 15, 8:11 PM CDT	Severe Thunderstorm Warning	OUN	Grant, Kay	64 min
Jun 15, 9:12 PM CDT	Severe Thunderstorm Warning	OUN	Grant, Kay, Noble	48 min
Jun 15, 9:25 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Garfield, Grant, Major	27 min
Jun 15, 11:52 PM CDT	Special Weather Statement	OUN	Hughes, Seminole	38 min
Jun 16, 2:51 PM CDT	Heat Advisory	OUN	Alfalfa, Atoka, Blaine, Bryan, Caddo, Canadian and 31 more	29 hr

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2017 Every severe thunderstorm warning in 2017

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.