Severe Thunderstorm Warning 69, NWS Norman, OK

653 
WWUS54 KOUN 290214
SVSOUN

Severe Weather Statement
National Weather Service Norman OK
914 PM CDT TUE MAR 28 2017

OKC015-290223-
/O.CAN.KOUN.SV.W.0069.000000T0000Z-170329T0245Z/
Caddo OK-
914 PM CDT TUE MAR 28 2017

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CADDO COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area.**! Therefore, the warning has been cancelled.

LAT...LON 3599 9746 3536 9742 3519 9787 3551 9812
      3566 9848 3568 9846 3617 9795 3617 9776
TIME...MOT...LOC 0213Z 225DEG 48KT 3577 9827 3567 9793 3554 9779 3524
9784

$$

OKC011-017-027-051-073-083-087-109-290245-
/O.CON.KOUN.SV.W.0069.000000T0000Z-170329T0245Z/
Kingfisher OK-Grady OK-Oklahoma OK-Cleveland OK-Blaine OK-Logan OK-
Canadian OK-McClain OK-
914 PM CDT TUE MAR 28 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM CDT
FOR KINGFISHER...NORTHEASTERN GRADY...WESTERN OKLAHOMA...NORTHWESTERN
CLEVELAND...SOUTHEASTERN BLAINE...SOUTHWESTERN LOGAN...CANADIAN AND
NORTHWESTERN MCCLAIN COUNTIES...

At 913 PM CDT, severe thunderstorms were located along a line
extending from 6 miles northeast of Greenfield to 4 miles southeast
of Okarche to 3 miles northwest of Yukon to 3 miles south of Tuttle,
moving northeast at 55 mph.

HAZARD...70 mph wind gusts and nickel size hail. 

SOURCE...Radar indicated. 

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings. 

Locations impacted include...
Oklahoma City, western Edmond, Moore, Del City, El Reno, Guthrie,
Newcastle, Kingfisher, Yukon, Bethany, Mustang, Warr Acres, The
Village, Tuttle, Piedmont, Nichols Hills, Hennessey, Union City,
Minco and Crescent.

This includes the following highways...
 Interstate 35 between mile markers 118 and 137.
 Interstate 40 between mile markers 113 and 155.
 Interstate 44 between mile markers 108 and 130.
 Interstate 240 between mile markers 1 and 8.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A tornado watch remains in effect for the warned area. Tornadoes can
develop quickly from severe thunderstorms.

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

&&

LAT...LON 3599 9746 3536 9742 3519 9787 3551 9812
      3566 9848 3568 9846 3617 9795 3617 9776
TIME...MOT...LOC 0213Z 225DEG 48KT 3577 9827 3567 9793 3554 9779 3524
9784

HAIL...0.88IN
WIND...70MPH
 
$$

MAHALE

188 
WWUS54 KOUN 290235
SVSOUN

Severe Weather Statement
National Weather Service Norman OK
935 PM CDT TUE MAR 28 2017

OKC011-290245-
/O.CAN.KOUN.SV.W.0069.000000T0000Z-170329T0245Z/
Blaine OK-
935 PM CDT TUE MAR 28 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BLAINE COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

LAT...LON 3599 9746 3536 9742 3523 9775 3572 9788
      3590 9821 3592 9821 3615 9797 3616 9796
      3614 9771
TIME...MOT...LOC 0235Z 275DEG 48KT 3601 9798 3586 9765 3562 9753 3531
9765

$$

OKC017-027-051-073-083-087-109-290245-
/O.CON.KOUN.SV.W.0069.000000T0000Z-170329T0245Z/
Kingfisher OK-Grady OK-Oklahoma OK-Cleveland OK-Logan OK-Canadian OK-
McClain OK-
935 PM CDT TUE MAR 28 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM CDT
FOR KINGFISHER...NORTHEASTERN GRADY...WESTERN OKLAHOMA...NORTHWESTERN
CLEVELAND...SOUTHWESTERN LOGAN...EASTERN CANADIAN AND NORTHWESTERN
MCCLAIN COUNTIES...

At 935 PM CDT, severe thunderstorms were located along a line
extending from 4 miles northwest of Dover to 3 miles southwest of
Cimarron City to near Oklahoma City to 5 miles northwest of
Newcastle, moving east at 55 mph.

HAZARD...70 mph wind gusts and nickel size hail. 

SOURCE...Radar indicated. 

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings. 

Locations impacted include...
Oklahoma City, western Edmond, Moore, Del City, Guthrie, Newcastle,
Kingfisher, Yukon, Bethany, Mustang, Warr Acres, The Village, Tuttle,
Piedmont, Nichols Hills, Hennessey, Crescent, Cashion, Valley Brook
and Dover.

This includes the following highways...
 Interstate 35 between mile markers 118 and 137.
 Interstate 40 between mile markers 133 and 155.
 Interstate 44 between mile markers 108 and 130.
 Interstate 240 between mile markers 1 and 8.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A tornado watch remains in effect for the warned area. Tornadoes can
develop quickly from severe thunderstorms.

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

&&

LAT...LON 3599 9746 3536 9742 3523 9775 3572 9788
      3590 9821 3592 9821 3615 9797 3616 9796
      3614 9771
TIME...MOT...LOC 0235Z 275DEG 48KT 3601 9798 3586 9765 3562 9753 3531
9765

HAIL...0.88IN
WIND...70MPH
 
$$

MAHALE

Area Forecast Discussion
National Weather Service Norman OK
700 PM CDT Tue Mar 28 2017

.DISCUSSION...
The severe thunderstorm potential with possible tornadoes is
ramping up especially south of a developing surface boundary from
near Sayre to a Stillwater line. Heavy rainfall and flash flooding
potential is increasing as well across much of Oklahoma and
north Texas.

The main line storms of interest from south of Hollis, Oklahoma
to near Knox City, Texas will continue to move northeast in the
next several hours. As low level shear increases (0-1 km shear
30-40 kt), the line will contain mesovortices that may produce
tornadoes, mainly quick and brief spinnups. Pockets of damaging
winds up to 80 mph may occur with this line as well. Heavy
rainfall rates of 1-3 inches per hour are likely with this line as
it moves northeast, which may cause flash flooding. The Wichita
Falls and Lawton areas will be affected in the 8-10 pm time frame.
This line will likely continue northeast, but may weaken
slightly, by time it reaches the I-35 corridor from Oklahoma City
south to Ardmore in the 10 pm to midnight time frame, though still
believe there will be some damaging wind, tornado, heavy
rainfall, and flash flooding risk.

Will also closely monitor for the development of isolated
supercells east and ahead of this line in parts of western north
Texas and central and southern Oklahoma in the next few hours. If
they form, which is possible due to strong forcing and cooling mid
level temperatures to weaken a cap, very large hail and tornadoes
would be possible. Not sure this will occur.

The showers and thunderstorms forming from north of Lawton north
to Ponca City appear to be elevated and rather unorganized. This
activity has a much lower chance to be severe in the next few
hours as instability is weaker across northern Oklahoma compared
to locations farther south.

MBS

&&

.AVIATION...
Forecast confidence in the TAFs remains low.

TSRA will affect most, if not, all sites in the next several
hours, bringing variable gusty winds, brief IFR or lower conditions,
and perhaps some hail. Confidence in hail occurrence remains too
low to mention at any given site. Think most TSRA will end by 10
UTC, though some -SHRA may linger in some locations.

Widespread IFR or lower conditions with BR may occur 06-18 UTC.
Only mentioned these conditions mainly north of KLTS-KOKC where
confidence of occurrence is higher compared to locations south.
IFR conditions will likely linger after 18 UTC near KWWR and KGAG
while other locations should improve to MVFR or VFR.

MBS

&&

.PREV DISCUSSION... /issued 201 PM CDT Tue Mar 28 2017/

DISCUSSION...
Will keep this relatively short as things will start getting busy
this afternoon. Expect marginal severe weather with the storms
over northwestern Oklahoma this afternoon, but the main show is
beginning to develop in west Texas and will move toward our
southwestern zones. Much higher surface dewpoints are moving
west-northwest through the Dallas-Fort Worth metroplex and toward
our southwestern zones allow surface moisture to increase ahead of
the arrival of the storms. Severe storms will be likely with
storms tonight. Although with time this evening, the convection
is expected to evolve toward a linear or QLCS configuration,
airmass would definitely support some supercells this afternoon
and early evening. Strong forcing associated with the approaching
upper wave will create widespread storms tonight, so continue with
categorical POPs and the chance of locally heavy rainfall.
Precipitation chances continue tomorrow as the upper low slowly
moves over the area. Expect cooler air and a break in storm
chances Thursday/Friday before the next in a series of upper lows
approaches.

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...None.
TX...None.
&&

17

Hazardous Weather Outlook...UPDATED
National Weather Service Norman OK
813 PM CDT Tue Mar 28 2017

OKZ004>048-050>052-TXZ083>090-300115-
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-
813 PM CDT Tue Mar 28 2017

This hazardous weather outlook is for portions of northern...
western...central...and southern Oklahoma...and western north
Texas.

.DAY ONE...This evening and overnight...

.Thunderstorms...
There is an Enhanced Risk of severe storms over western north
Texas and portions of central and southern Oklahoma.

Location...
The Enhanced Risk covers locations near and southeast of Crowell
and Vernon Texas, to Hobart, Hinton, and Guthrie. A Slight Risk
covers locations north of the Enhanced Risk and south of Elk City,
Enid and Ponca City.

Timing...
Severe storms are most likely through 2 AM.

Impacts...
Hail up to the size of golfballs and damaging wind gusts around
70 mph will be the main hazards. Brief tornadoes will also be
possible in the Enhanced Risk area. Hail up to the size of
baseballs will be possible across western north Texas into far
southern Oklahoma as well.

Discussion...
Supercell thunderstorms continue to consolidate into lines of
storms this evening. Bowing structures will pose primarily a
damaging wind threat through 2 AM as they move east and northeast
primarily across the Enhanced Risk area.

.Heavy rain...
Heavy rainfall will be likely across much of the area. The most
likely area for the heaviest rainfall will be across western north
Texas and areas near and south of I-44 in Oklahoma. Localized
flash flooding will be possible.

.SPOTTER AND EMERGENCY MANAGEMENT STATEMENT...
Storm spotter groups and emergency management personnel across
the risk areas should prepare for severe weather operations from
this evening into the overnight hours.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday...

.Thunderstorms...
There is a Slight Risk of severe thunderstorms Wednesday, mainly
east of I-35 during the afternoon hours. Thunderstorm chances
will then continue each day through Monday. Severe thunderstorm
chances will return Saturday.

.Heavy rainfall...
Heavy rainfall will be possible Wednesday across southeast
Oklahoma. Flooding will be possible.

Get graphics and more details at weather.gov/norman...and follow
our weather forecast office on Twitter and Facebook.

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
815 PM CDT TUE MAR 28 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0811 PM     HAIL             2 SSW SEYMOUR           33.57N 99.27W
03/28/2017  E2.50 INCH       BAYLOR             TX   TRAINED SPOTTER

&&

JPIKE

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
840 PM CDT TUE MAR 28 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0835 PM     TSTM WND GST     2 NE FORT COBB RESERVOI 35.21N 98.45W
03/28/2017  M64 MPH          CADDO              OK   AMATEUR RADIO

            .

&&

NWS NORMAN OK
IRIS SYSTEM

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
844 PM CDT TUE MAR 28 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0841 PM     HAIL             1 W ELECTRA             34.03N 98.94W
03/28/2017  U1.75 INCH       WICHITA            TX   TRAINED SPOTTER

            .

&&

NWS NORMAN OK
IRIS SYSTEM

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
846 PM CDT TUE MAR 28 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0843 PM     HAIL             ELECTRA                 34.03N 98.92W
03/28/2017  U1.25 INCH       WICHITA            TX   TRAINED SPOTTER

            .

&&

NWS NORMAN OK
IRIS SYSTEM

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
848 PM CDT TUE MAR 28 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0847 PM     HAIL             3 W ELECTRA             34.03N 98.96W
03/28/2017  U1.25 INCH       WILBARGER          TX   FIRE DEPT/RESCUE

            .

&&

NWS NORMAN OK
IRIS SYSTEM

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
856 PM CDT TUE MAR 28 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0852 PM     TSTM WND DMG     CARNEGIE                35.11N 98.60W
03/28/2017                   CADDO              OK   FIRE DEPT/RESCUE

            REPORTS OF MANY POWER LINES DOWNED IN TOWN.
            RELAYED BY EM.

&&

JP