Special Weather Statement, NWS Wilmington, OH

Area Forecast Discussion
National Weather Service Wilmington OH
350 PM EDT Thu Mar 30 2017

.SYNOPSIS...
Showers and thunderstorms can be expected tonight, as a low
pressure system and its associated cold front move through the
Ohio Valley. The low will move slowly off to the east on Friday,
with some showers lingering on its backside. High pressure will
offer dry weather and cooler temperatures for this weekend.

&&

.NEAR TERM /UNTIL 6 AM FRIDAY MORNING/...
Near term forecast will focus on the potential for severe
weather tonight.

This afternoon, a warm front is lifting northward across the
CWFA. With increasing instability near the warm front, some
scattered thunderstorms will develop in the Whitewater/Miami
Valley and west central Ohio. A Tornado Watch has been issued
for this region into this evening as conditions are favorable
for rotating storms, producing large hail, damaging winds or an
isolated tornado.

For the overnight period, surface low pressure and its
associated cold front will move east into the Ohio Valley.
Showers and thunderstorms will increase in coverage as large
scale ascent ahead of a negatively titled mid level circulation
will couple with increase low level convergence in the vicinity
of a prefrontal trough/convergent area. Convection allowing
models are giving mixed signals on the mode of thunderstorms as
instability wanes considerably overnight. Right now, it looks
like clusters of storms, perhaps forming into a ill-defined
QLCS, will work its way from west to east through the CWFA
overnight. There will still be a damaging wind threat and
isolated tornado threat, but large hail should wane as
instability decreases. There is also concerned for some locally
heavy rain if some storms train over the same locations. All of
these hazards are mentioned in the current HWO. Temperatures
will fall into the lower to mid 50s by sunrise Friday as the
frontal boundary works its way east.

&&

.SHORT TERM /6 AM FRIDAY MORNING THROUGH FRIDAY NIGHT/...
Surface and upper level closed low will be occluding on Friday,
slowly pushing east to a position off the lower New England/mid
Atlantic Coast by Friday night. Showers will be likely early on
in our far east, with a lingering threat for showers across the
remainder of the region until the center of the upper level low
pulls sufficiently away. With mainly cloudy skies and some CAA,
temperatures will not warm all that much from the morning lows.
Highs will range from the mid 50s west to near 60 east.

Clouds will linger into Friday night while the threat for
lingering showers tapers off from west to east. It will be cool
with lows dropping into the upper 30s to the lower 40s.

&&

.LONG TERM /SATURDAY THROUGH THURSDAY/...
Extended period begins with the region in the wake of a departing H5
low. H5 ridge and sfc high will build in for Saturday bringing
cloudy but dry conditions. Highs will range from the upper 40s to
mid 50s. The dry weather will continue into Sunday. Temperatures
will rebound into the upper 50s to mid 60s.

Models begin to show their differences by late Sunday as another
system ejects out of Texas. The GFS is the weakest and slowest with
the system as it moves to east of the MS River. The ECMWF and CMCnh
are quicker and stronger. Continued with high chance of rain across
the fa, especially in the south. Kept a chance of thunder for the
southern sections also.

The system pulls east Monday night, leaving the region dry for
Tuesday. Another upper low swings out of the central plains on
Wednesday, bringing another chance of showers and thunderstorms for
the later half of the week.

&&

.AVIATION /20Z THURSDAY THROUGH TUESDAY/...
Low pressure and its associated cold front will move east into
the Great Lakes and Ohio Valley through the tonight. As it does,
showers and thunderstorms will be on the increase, with the
highest threat for precipitation coming in the 02Z to 09Z time
frame as a semi cluster/linear feature works its way east across
the terminals. Depending on the location at this given time,
either TEMPO thunder or VCTS has been used. Aviators can
expect MVFR conditions in thunderstorms. Atmosphere will be
conducive to locally heavy rain/IFR visibilities in
thunderstorms, but this will have to be handled in a short term
TEMPO as the system starts to evolve. Gusty winds this
afternoon will decouple and become more stable by this evening.

On Friday, an upper level closed low will move east across the
Ohio Valley, with substantial instability having moved east
with the cold front. Some lingering showers east and spotty
showers west are expected with the upper level low. Ceilings
will be firmly in the MVFR lower category, i.e. in the 1000 to
2000 foot range.

For Friday night, upper level low will continue to move to the
mid Atlantic/southern New England coast. Shower threat will
taper of but low ceilings will remain in the MVFR/IFR category.

OUTLOOK...MVFR to IFR ceilings likely Friday night into
Saturday. MVFR ceilings and visbilities possible Monday into
Tuesday.

&&

.ILN WATCHES/WARNINGS/ADVISORIES...
OH...None.
KY...None.
IN...None.

&&

SYNOPSIS...Hickman
NEAR TERM...Hickman
SHORT TERM...Hickman
LONG TERM...Sites
AVIATION...Hickman

Hazardous Weather Outlook
National Weather Service Wilmington OH
322 PM EDT Thu Mar 30 2017

INZ050-058-059-066-073>075-080-KYZ089>099-OHZ026-034-035-042>044-
051>053-060>062-070>072-077>079-311100-
Wayne-Fayette IN-Union IN-Franklin IN-Ripley-Dearborn-Ohio-
Switzerland-Carroll-Gallatin-Boone-Kenton-Campbell-Owen-Grant-
Pendleton-Bracken-Robertson-Mason-Hardin-Mercer-Auglaize-Darke-
Shelby-Logan-Miami-Champaign-Clark-Preble-Montgomery-Greene-Butler-
Warren-Clinton-Hamilton-Clermont-Brown-
322 PM EDT Thu Mar 30 2017

This Hazardous Weather Outlook is for East Central Indiana,
Southeast Indiana, Northern Kentucky, Southwest Ohio and West
Central Ohio.

.DAY ONE...This Afternoon and Tonight.

Thunderstorms are expected to develop ahead of an approaching
low pressure system and cold front today. A window will exist
late this afternoon into the evening, where some of the storms may
be severe. The main threats will be large hail and damaging winds. An
isolated tornado cannot be ruled out. Also, localized heavy rain and
flooding will be possible.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be required.

KYZ100-OHZ045-046-054>056-063>065-073-074-080>082-088-311100-
Lewis-Union OH-Delaware-Madison-Franklin OH-Licking-Fayette OH-
Pickaway-Fairfield-Ross-Hocking-Highland-Adams-Pike-Scioto-
322 PM EDT Thu Mar 30 2017

This Hazardous Weather Outlook is for Northeast Kentucky, Central
Ohio and Southwest Ohio.

.DAY ONE...This Afternoon and Tonight.

Thunderstorms are expected to develop ahead of an approaching
low pressure system and cold front. A window will exist this evening
and overnight, where isolated severe storms may be possible. The
main threat would be damaging winds, but an isolated tornado can not
be ruled out.  Also, localized heavy rain and flooding will be
possible.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be required.

Special Weather Statement
National Weather Service Wilmington OH
646 PM EDT THU MAR 30 2017

OHZ065-302315-
Fairfield OH-
646 PM EDT THU MAR 30 2017

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN FAIRFIELD COUNTY
UNTIL 715 PM EDT...

At 645 PM EDT, radar indicated a strong thunderstorm over
Pleasantville, moving northeast at 40 mph.

STORM HAZARDS INCLUDE...
Winds to 40 mph...
Nickel size hail...

Locations impacted include...
Lancaster, Baltimore, Pleasantville, Fairfield Beach, Thurston and
Dumontville.

To report hazardous weather conditions, go to our website at
weather.gov/iln and submit your report via social media, when you can
do so safely.

LAT...LON 3979 8240 3973 8258 3981 8266 3992 8246
      3984 8247 3984 8243 3983 8240
TIME...MOT...LOC 2245Z 236DEG 34KT 3980 8256

Novak

Special Weather Statement
National Weather Service Wilmington OH
648 PM EDT THU MAR 30 2017

OHZ034-302315-
Mercer OH-
648 PM EDT THU MAR 30 2017

...STRONG THUNDERSTORMS WILL AFFECT NORTHERN MERCER COUNTY UNTIL 715
PM EDT...

At 648 PM EDT, radar indicated a strong thunderstorm near Ohio City,
moving northeast at 40 mph.

STORM HAZARDS INCLUDE...
Winds to 40 mph...
One half inch diameter hail...
Frequent cloud-to-ground lightning...

Locations impacted include...
Celina, Mendon and Tama.

Do not stay in the open or seek shelter under trees when lightning
threatens. Move indoors when a thunderstorm approaches.

Residents in these areas should remain alert. If this storm becomes
stronger, then a warning may be needed.

To report hazardous weather conditions, go to our website at
weather.gov/iln and submit your report via social media, when you can
do so safely.

LAT...LON 4069 8445 4052 8463 4058 8475 4073 8459
      4073 8446
TIME...MOT...LOC 2248Z 219DEG 36KT 4071 8452

Binau

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OH
657 PM EDT THU MAR 30 2017

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

0650 PM     HAIL             3 W NEWARK              40.05N 82.46W
03/30/2017  M0.50 INCH       LICKING            OH   PUBLIC

&&

JGIBSON

Special Weather Statement
National Weather Service Wilmington OH
702 PM EDT THU MAR 30 2017

OHZ056-302330-
Licking OH-
702 PM EDT THU MAR 30 2017

...A STRONG THUNDERSTORM WILL AFFECT EASTERN LICKING COUNTY UNTIL 730
PM EDT...

At 702 PM EDT, radar indicated a strong thunderstorm near Harbor
Hills, moving northeast at 50 mph.

STORM HAZARDS INCLUDE...
Winds to 40 mph...
Nickel size hail...

Locations impacted include...
Newark, Heath, Granville, Buckeye Lake, Hebron, Utica, Hanover,
Harbor Hills, Marne, Thornport, St. Louisville, Gratiot, Toboso,
Brownsville, Purity, Interstate 70 at State Route 13 and Fallsburg.

This includes I-70 in Ohio between mile markers 129 and 142, and near
mile marker 144.

To report hazardous weather conditions, go to our website at
weather.gov/iln and submit your report via social media, when you can
do so safely.

LAT...LON 3995 8220 3995 8223 3991 8223 3993 8247
      3998 8253 4024 8242 4024 8219
TIME...MOT...LOC 2302Z 233DEG 44KT 3997 8239

Novak

Special Weather Statement
National Weather Service Wilmington OH
708 PM EDT THU MAR 30 2017

OHZ035-302330-
Auglaize OH-
708 PM EDT THU MAR 30 2017

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN AUGLAIZE COUNTY
UNTIL 730 PM EDT...

At 707 PM EDT, radar indicated a strong thunderstorm near
Waynesfield, moving northeast at 55 mph.

STORM HAZARDS INCLUDE...
Winds to 40 mph...
One half inch diameter hail...

Locations impacted include...
Wapakoneta, Waynesfield, Uniopolis, St. Johns and New Hampshire.

This includes I-75 in Ohio near mile marker 112.

To report hazardous weather conditions, go to our website at
weather.gov/iln and submit your report via social media, when you can
do so safely.

LAT...LON 4058 8388 4053 8398 4054 8399 4053 8399
      4051 8404 4057 8418 4064 8410 4064 8388
TIME...MOT...LOC 2307Z 220DEG 48KT 4057 8405

Novak

Special Weather Statement
National Weather Service Wilmington OH
721 PM EDT THU MAR 30 2017

OHZ026-302345-
Hardin OH-
721 PM EDT THU MAR 30 2017

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN HARDIN COUNTY UNTIL
745 PM EDT...

At 721 PM EDT, radar indicated a strong thunderstorm near Alger,
moving northeast at 55 mph.

STORM HAZARDS INCLUDE...
Winds to 40 mph...
Pea size hail...

Locations impacted include...
Ada, Alger, Mcguffey, Huntersville and Dola.

To report hazardous weather conditions, go to our website at
weather.gov/iln and submit your report via social media, when you can
do so safely.

LAT...LON 4064 8386 4065 8388 4082 8388 4082 8363
TIME...MOT...LOC 2321Z 220DEG 49KT 4070 8392

Novak