Severe Thunderstorm Warning 167, NWS Wilmington, OH

AREA FORECAST DISCUSSION
National Weather Service Wilmington OH
206 PM EDT Fri Jul 10 2020

.SYNOPSIS...
Showers and thunderstorms will occur ahead of a weak cold front
today. Another front will move across the region on Sunday. This
will result in temperatures falling a bit below normal for the
weekend into early next week.

&&

.NEAR TERM /UNTIL 6 PM THIS EVENING/...
Showers and thunderstorms have developed ahead of a cold front
that will move through the region today. Expect coverage of
thunderstorm activity to increase for the afternoon hours. With
DCAPE values of over 800 there will be the potential for
isolated damaging wind gusts as these storms move through. Will
add this mention to the HWO. Storms today will be much more
progressive than the past several days, however brief heavy
downpours will be possible.

The highest temperatures today will be across eastern portions
of the forecast area where it will take longer for the front to
reach. A few heat index values in the middle to upper 90s will
be possible across eastern portions of the forecast area as
well.

Winds will gust at times today, especially after the passage of
the frontal boundary. Outside of thunderstorm activity these
wind gusts will generally be in the 20 to 30 mph range.

&&

.SHORT TERM /6 PM THIS EVENING THROUGH 6 PM SATURDAY/...
Showers and a few thunderstorms may linger into the evening,
particularly in central Ohio as the short wave strengthens and
closes off as it continues its trek into eastern Ohio and
western Pennsylvania. Besides precipitation chances, response at
the surface will be for a relatively tight pressure gradient
keeping winds up overnight, which will linger into Saturday with
some gusty winds. Clouds will gradually clear overnight as low
level flow become anticyclonic. Weak warm air advection will
commence on Saturday afternoon and cannot rule out a few showers
developing from this forcing, although probability looks low at
this time. Lows will drop into the mid to upper 60s tonight with
highs close to normal on Saturday.

&&

.LONG TERM /SATURDAY NIGHT THROUGH THURSDAY/...
A very brief period of zonal flow will occur Saturday night until a
secondary lobe of shortwave energy rotates through the Ohio Valley
in the mean longwave trough. The axis of this wave will cross late
Sunday, with showers and thunderstorms expected to be the rule of
the day Sunday, quickly ending in the evening. This will hamper
daytime highs which should only get into the low to mid 80s after
morning lows in the mid 60s.

Overnight should remain dry and see lows drop to the lower 60s
across the region. Monday will have cloudy skies and another lobe of
shortwave energy crossing through lower MI and LERI, possibly
resulting in some showers or thunderstorms with a slightly higher
chance residing in central OH. Once again, highs will only top out
80-85 degrees. Another dry night with cool nw flow should have lows
by Tuesday morning in the 60-65 range. This dry period will last
through daybreak Wednesday, then a slight chance of rain will be
necessary in the forecast as zonal wly flow pushes s/w energy east
as a surface low is progged to be somewhere in the vicinity of nw
OH Wed night.

While models are not that far off on the sensible weather and
overall pattern, the European is a solid 6-12 deg warmer than the
GFS starting Mon night and lasting through Wed night. Euro may
verify better but the trend and national blend of models are cutting
this difference neatly in half. Given a weakly building ridge until
flow becomes zonal Wed night, this seems to be the more reasonable
forecast.

Lowered the temps a bit beyond this period as a hedge towards having
cloud cover streaming in from the west.

&&

.AVIATION /18Z FRIDAY THROUGH WEDNESDAY/...
A cold front will continue to move through this afternoon. In
advance of this feature, scattered thunderstorms will be
possible. KCMH and KLCK has the best chance of seeing additional
thunderstorm activity this afternoon.

Winds pick up with the passage of the front and expect some wind
gusts into the evening hours before tapering off. Even as wind
gusts taper off, winds are expected to stay up some overnight.

A few showers will linger into tonight as an upper level
disturbance moves through. In addition MVFR cigs will be
possible around KCMH and KLCK.

A few cu will be possible on Saturday in addition to some high
clouds.

OUTLOOK...Thunderstorms are possible Sunday.

&&

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

&&

SYNOPSIS...
NEAR TERM...Novak
SHORT TERM...
LONG TERM...Franks
AVIATION...Novak

Hazardous Weather Outlook
National Weather Service Wilmington OH
1159 AM EDT Fri Jul 10 2020

INZ050-058-059-066-073>075-080-KYZ089>099-OHZ026-034-035-042>045-
051>054-060>063-070>072-077>080-111600-
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-Union OH-Miami-Champaign-Clark-Madison-Preble-
Montgomery-Greene-Fayette OH-Butler-Warren-Clinton-Hamilton-Clermont-
Brown-Highland-
1159 AM EDT Fri Jul 10 2020

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

.DAY ONE...This afternoon and tonight.

Isolated damaging wind gusts will be possible this afternoon.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

There is a low probability for widespread hazardous weather.

.SPOTTER INFORMATION STATEMENT...

Spotters are asked to submit significant weather conditions, while
following all local, state and CDC guidelines.

KYZ100-OHZ046-055-056-064-065-073-074-081-082-088-111600-
Lewis-Delaware-Franklin OH-Licking-Pickaway-Fairfield-Ross-Hocking-
Adams-Pike-Scioto-
1159 AM EDT Fri Jul 10 2020

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

.DAY ONE...This afternoon and tonight.

Isolated damaging wind gusts will be possible this afternoon.

The combination of temperatures in the upper 80s and lower 90s along
with high relative humidity will lead to the heat index rising to
between 95 and 100 today.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

There is a low probability for widespread hazardous weather.

.SPOTTER INFORMATION STATEMENT...

Spotters are asked to submit significant weather conditions, while
following all local, state and CDC guidelines.

Special Weather Statement
National Weather Service Wilmington OH
210 PM EDT Fri Jul 10 2020

OHZ056-101845-
Licking OH-
210 PM EDT Fri Jul 10 2020

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN LICKING COUNTY
UNTIL 245 PM EDT...

At 209 PM EDT, radar indicated a strong thunderstorm over Heath,
moving east at 25 mph.

STORM HAZARDS INCLUDE...
Winds to 50 mph...

Locations impacted include...
Newark, Heath, Granville, Buckeye Lake, Hebron, Hanover, Harbor
Hills, Granville South, Marne, Gratiot, Toboso and Brownsville.

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 3992 8240
      3993 8242 3993 8249 3994 8249 4008 8257
      4021 8218
TIME...MOT...LOC 1809Z 251DEG 24KT 3999 8243

Hatzos

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