Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 522, NWS Norman, OK

June 23, 2016Kay County, Noble County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jun 23, 2016, 11:45 PM CDT for Kay County, Noble County, Oklahoma. It was in force for 45 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 23, 2016, 11:45 PM CDT (04:45 UTC)
Expired: Jun 24, 2016, 12:30 AM CDT
In force: 45 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Kay County, OK, Noble County, OK

The radar

The Vance AFB radar (KVNX), 108 km from the middle of the area, began a volume at 04:44 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 4.8 hours before the alert went out and 171 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: 2424 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 1584 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 33 m²/s²
0-3 km storm-relative helicity: 88 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.2

Open this sounding in Storm Lab

The text

As transmitted.

962 
WUUS54 KOUN 240445
SVROUN
OKC071-103-240530-
/O.NEW.KOUN.SV.W.0522.160624T0445Z-160624T0530Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORMAN OK
1145 PM CDT THU JUN 23 2016

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN KAY COUNTY IN NORTHERN OKLAHOMA...
  NORTHEASTERN NOBLE COUNTY IN NORTHERN OKLAHOMA...

* UNTIL 1230 AM CDT

* AT 1145 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR KILDARE...
  MOVING SOUTHEAST AT 25 MPH.

  HAZARD...60 MPH WIND GUSTS AND HALF DOLLAR SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

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

* LOCATIONS IMPACTED INCLUDE...
  PONCA CITY...NEWKIRK...KAW CITY...KILDARE...KAW LAKE...HARDY AND
  CHILOCCO.

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
      3669 9693 3668 9695 3660 9692 3658 9689
      3655 9690 3653 9698 3658 9701 3661 9693
      3667 9695 3670 9703 3669 9706 3700 9721
      3700 9675
TIME...MOT...LOC 0445Z 324DEG 20KT 3683 9707 

HAIL...1.25IN
WIND...60MPH
 
$$

SIX

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Norman, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 23, 9:40 PM CDT, 2 hours 5 minutes earlier.

Area forecast discussion, Jun 23, 9:40 PM CDT, 2 hours 5 minutes before

Area Forecast Discussion
National Weather Service Norman OK
940 PM CDT THU JUN 23 2016

.DISCUSSION...
A lone thunderstorm remains this evening, a few miles south
of Enid. This storm has weakened over the past 15 minutes and
may dissipate completely.

However, an outflow boundary is draped across northern Oklahoma
roughly from Tulsa to Enid and Woodward. The boundary is rather
shallow per KVNX, but may help with additional shower and
thunderstorm develop later tonight/overnight as a low level jet
increases. Other storms remain over the higher terrain and these
storms may reach northwest Oklahoma during the overnight hours.
Unsure on the overall coverage of precipitation, so plan to keep
pops around 30 percent.

The stronger storms will be capable of gusty winds to 50 mph,
heavy rainfall (PWATS are rather high) and perhaps small hail.

&&

.PREV DISCUSSION... /issued 619 PM CDT THU JUN 23 2016/

DISCUSSION...
The 24/00Z TAF discussion is below.

AVIATION...
Generally expect VFR conditions to continue through the TAF
period. Otherwise, expect the remnant outflow boundary across
northern Oklahoma to lift northward this evening/overnight, which
should veer the winds back to the southeast across KGAG/KWWR/KPNC.

There is an outside possibility for storms to approach KGAG and
KWWR from the west overnight; however, confidence is too low to
include in TAFS. Elsewhere, southerly winds are expect to become
gusty once again tomorrow afternoon.

Mahale

PREV DISCUSSION... /issued 405 PM CDT THU JUN 23 2016/

DISCUSSION...
A remnant mesoscale convective vortex (MCV) continues to progress
eastward across southern Kansas. Showers and storms will remain
possible across north central Oklahoma near the MCV and any
associated outflow boundaries through the afternoon/early evening.

MLCAPE around 2500 J/kg will allow for some severe hail threat, but
relatively weak mid-level lapse rates and 0-6 km shear should limit
the magnitude of any hailstones. Downdraft CAPE over 1500 J/kg will
result in wet downburst potential as any intense reflectivity
cores collapse.

Showers and storms also are developing across eastern Colorado
and New Mexico. Several convective-allowing models suggest these
storms could approach northwest Oklahoma later tonight into
tomorrow morning.

On Saturday, a cold front is expected to become quasi-stationary
across western Kansas and the Oklahoma/Texas panhandles. Remnant
showers and storms that develop along this boundary may approach
northwest Oklahoma late Sunday.

Any effective boundary from these storms may serve as a potential
focal point for storms on Sunday. The greatest threat will be
across northern Oklahoma.

Monday and beyond, the mid-level ridge is expected to shift to the
west. This should allow weak short waves, backdoor colds fronts,
and/or MCS to affect the Southern Plains. The greatest QPF signal on
both the GFS and ECMWF is across the northeast; however, there is
quite a bit of uncertainty as storm chances likely will be driven
by the previous day's convection and any remnant features (such as
outflow boundaries and MCVs). The bottom line is temperatures
should be at least slightly cooler with a daily chance of showers
and storms through next week.

Mahale

&&

.PRELIMINARY POINT TEMPS/POPS...
Oklahoma City OK  75  95  73  95 /  10   0   0   0
Hobart OK         75  96  74  97 /  10   0   0   0
Wichita Falls TX  75  96  75  97 /   0   0   0   0
Gage OK           73  98  73  98 /  30  20  10  10
Ponca City OK     75  96  75  97 /  30  10   0   0
Durant OK         74  93  74  93 /   0   0   0   0

&&

.OUN Watches/Warnings/Advisories...
OK...None.
TX...None.
&&

Hazardous weather outlook, Jun 23, 7:15 PM CDT, 4 hours 30 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
715 PM CDT THU JUN 23 2016

OKZ004>048-050>052-TXZ083>090-241000-
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-
NOBLE-ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-
BECKHAM-WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-
CLEVELAND-POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-
TILLMAN-COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-
JEFFERSON-CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-
FOARD-WILBARGER-WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
715 PM CDT THU JUN 23 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHERN...
WESTERN...CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH
TEXAS.

.DAY ONE...THROUGH TONIGHT...

.THUNDERSTORMS...
SCATTERED SHOWERS AND THUNDERSTORMS MAY MOVE ACROSS THE
OKLAHOMA AND TEXAS PANHANDLES THIS EVENING...REACHING NORTHWESTERN
OKLAHOMA MAINLY AFTER MIDNIGHT.  OTHER WIDELY SCATTERED THUNDERSTORMS
MAY FORM IN NORTHERN OKLAHOMA AND SOUTHERN KANSAS ALONG AND NORTH OF
AN OUTFLOW BOUNDARY.

THE STRONGER STORMS WILL BE CAPABLE OF PRODUCING GUSTY WINDS
OVER 45 MPH AND BRIEF HEAVY RAINFALL.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY...

.HEAT...
AFTERNOON HEAT INDEX VALUES WILL REACH 95 TO 105 ACROSS MUCH OF
THE AREA FRIDAY THROUGH MONDAY.

.THUNDERSTORMS...
THUNDERSTORM CHANCES RETURN SUNDAY AND CONTINUE THROUGH WEDNESDAY.
A FEW STRONG TO SEVERE STORMS WILL BE POSSIBLE.

GET GRAPHICS AND MORE DETAILS AT WEATHER.GOV/NORMAN...AND FOLLOW
OUR WEATHER FORECAST OFFICE ON TWITTER AND FACEBOOK.

In the hours before

Special weather statement, Jun 23, 9:08 PM CDT, 2 hours 37 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
908 PM CDT THU JUN 23 2016

OKZ012-240230-
GARFIELD OK-
908 PM CDT THU JUN 23 2016

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN GARFIELD COUNTY
UNTIL 930 PM CDT...

AT 907 PM CDT...A STRONG THUNDERSTORM WAS LOCATED 5 MILES SOUTH OF
DRUMMOND...MOVING NORTH AT 10 MPH.

HAZARDS INCLUDE...
HAIL UP TO THE SIZE OF NICKELS...
WIND GUSTS TO 40 MPH...
MINOR FLOODING IN AREAS OF POOR DRAINAGE...

LOCATIONS IMPACTED INCLUDE...
ENID...WAUKOMIS...DRUMMOND AND VANCE AIR FORCE BASE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MONITOR THE WEATHER SITUATION CLOSELY AND BE ALERT FOR THREATENING
WEATHER CONDITIONS.

&&

LAT...LON 3636 9786 3617 9792 3617 9809 3637 9810
TIME...MOT...LOC 0207Z 181DEG 9KT 3622 9803

11

Special weather statement, Jun 23, 9:29 PM CDT, 2 hours 16 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
929 PM CDT THU JUN 23 2016

OKZ012-240245-
GARFIELD OK-
929 PM CDT THU JUN 23 2016

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN GARFIELD COUNTY
UNTIL 945 PM CDT...

AT 927 PM CDT...A STRONG THUNDERSTORM WAS LOCATED NEAR DRUMMOND...
MOVING NORTH AT 10 MPH.

HAZARDS INCLUDE...
WIND GUSTS TO 40 MPH...

LOCATIONS IMPACTED INCLUDE...
ENID...WAUKOMIS...LAHOMA...DRUMMOND AND VANCE AIR FORCE BASE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE WEATHER IS NOT EXPECTED AND NO WARNINGS ARE ANTICIPATED AT
THIS TIME.

&&

LAT...LON 3617 9792 3617 9807 3640 9810 3637 9787
TIME...MOT...LOC 0227Z 181DEG 8KT 3625 9802

11

Special weather statement, Jun 23, 10:44 PM CDT, 1 hour 1 minute before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
1044 PM CDT THU JUN 23 2016

OKZ008-240430-
KAY OK-
1044 PM CDT THU JUN 23 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN KAY COUNTY UNTIL
1130 PM CDT...

AT 1042 PM CDT...A STRONG THUNDERSTORM WAS LOCATED NEAR CHILOCCO...
MOVING SOUTHEAST AT 10 MPH.

HAZARDS INCLUDE...
WIND GUSTS TO 40 MPH...
VERY HEAVY RAIN...

LOCATIONS IMPACTED INCLUDE...
PONCA CITY...NEWKIRK...KAW CITY...KILDARE...KAW LAKE...
HARDY AND CHILOCCO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE WEATHER IS NOT EXPECTED AND NO WARNINGS ARE ANTICIPATED AT
THIS TIME.

IF ON OR NEAR KAW LAKE...GET OUT OF THE WATER AND MOVE INDOORS OR
INSIDE A VEHICLE. REMEMBER...LIGHTNING CAN STRIKE OUT TO 15 MILES
FROM THE PARENT THUNDERSTORM. IF YOU CAN HEAR THUNDER...YOU ARE
CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. MOVE TO SAFE SHELTER NOW. DO
NOT BE CAUGHT ON THE WATER IN A THUNDERSTORM.

&&

LAT...LON 3678 9675 3678 9679 3677 9679 3677 9682
      3675 9682 3674 9683 3675 9687 3675 9689
      3668 9693 3669 9700 3699 9717 3700 9715
      3700 9675
TIME...MOT...LOC 0342Z 318DEG 9KT 3696 9705

11

Special weather statement, Jun 23, 11:34 PM CDT, 11 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
1134 PM CDT THU JUN 23 2016

OKZ008-240500-
KAY OK-
1134 PM CDT THU JUN 23 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN KAY COUNTY UNTIL
MIDNIGHT CDT...

AT 1132 PM CDT...A STRONG THUNDERSTORM WAS LOCATED NEAR NEWKIRK...
MOVING SOUTHEAST AT 25 MPH.

HAZARDS INCLUDE...
WIND GUSTS OVER 50 MPH...
SOME FLOODING IN AREAS OF POOR DRAINAGE...

LAT...LON 3678 9675 3678 9679 3677 9679 3677 9682
      3674 9683 3675 9687 3675 9689 3668 9693
      3669 9702 3670 9703 3669 9705 3700 9723
      3700 9675
TIME...MOT...LOC 0432Z 324DEG 20KT 3686 9704

SIX

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 23, 9:08 PM CDT	Special Weather Statement	OUN	Garfield	22 min
Jun 23, 9:29 PM CDT	Special Weather Statement	OUN	Garfield	16 min
Jun 23, 10:44 PM CDT	Special Weather Statement	OUN	Kay	46 min
Jun 23, 11:25 PM CDT	Areal Flood Advisory	OUN	Kay	110 min
Jun 23, 11:34 PM CDT	Special Weather Statement	OUN	Kay	26 min
Jun 23, 11:56 PM CDT	Flash Flood Warning	OUN	Kay	9 hr
Jun 24, 12:27 AM CDT	Severe Thunderstorm Warning	OUN	Kay	48 min
Jun 24, 2:08 AM CDT	Special Weather Statement	OUN	Kay	37 min
Jun 24, 2:30 AM CDT	Severe Thunderstorm Warning	OUN	Kay	45 min
Jun 24, 3:08 AM CDT	Flash Flood Warning	OUN	Kay	3 hr
Jun 24, 5:23 AM CDT	Areal Flood Advisory	OUN	Grant, Kay	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.