textproduct: Wilmington

WHAT HAS CHANGED

Decreased low temperatures overnight across the west and across the east Sunday night. Made changes to pops with Monday system, QPF for Tuesday, and several aspects of the Friday system.

KEY MESSAGES

1) Frigid temperatures will continue through this weekend and below normal temperatures expected all week.

2) Several systems through the week will bring snow chances to the region.

DISCUSSION

1) Frigid temperatures will continue through this weekend and below normal temperatures expected all week.

Continued the cold weather advisory for the overnight hours and through the morning daytime hours on Sunday. Expect clouds to start to dissipate late in the overnight hours especially across western portions of the region. This will allow for temperatures to drop overnight. Cannot rule out some freezing fog development as well. Lowered low temperatures across eastern portions of the region Sunday night as it will take some time for clouds to move into those locations in advance of the next system. Cannot rule out the need for another cold weather advisory Sunday night across central Ohio, however after collaboration held off on issuing any additional headlines until details resolve. While temperatures during the week will be a little warmer than the area has seen, below normal temperatures are expected through the week.

2) Several systems through the week will bring snow chances to the region.

Snow flurries or light snow showers will continue at times overnight, before starting to dissipate. A weak system will bring some additional light snow chances to the region on Monday. The better chance for this occurring is near and north of Interstate 70. On Tuesday a system is expected to bring primarily snow to the region with a focus south of Interstate 70. Models have come into better agreement on location and timing of this system. Up to 2 inches of snow will be possible around the Ohio River with lower amounts north and south of there. A clipper system will work into the region Thursday night through Friday night. This system will not only bring additional snow to the region, but a reinforcing shot of cold air as well bringing single digit low temperatures back into the picture. Gusty winds will also accompany this system. These types of systems often are over performers with snow amounts. Current forecast has less than an inch across southwestern portions of the region and then around 3 to 4 inches in central Ohio. Will have to watch as snowfall values may have to be increased with time across southwestern portions of the area depending on exact track of the system.

AVIATION /06Z SUNDAY THROUGH THURSDAY/

A mix of MVFR and VFR conditions will be present overnight with isolated IFR conditions possible. A return to VFR conditions is expected as the day progresses on Sunday. Additional MVFR conditions will be possible towards the end of the TAF period.

Snow flurries or light snow showers will continue at times overnight. KCMH and KLCK will hold onto the light snow the longest and it may linger into the daytime morning hours on Sunday. Cigs are both MVFR and VFR and will continue to be so during this time. Vsbys may be reduced at times.

As clouds start to decrease later overnight cannot rule out some fog development. At this time limited mention to MVFR vsbys with fog to KDAY. VFR conditions will return during the day on Sunday, however Sunday night additional MVFR conditions will be possible.

OUTLOOK...MVFR CIGs are likely, with MVFR VSBYs and IFR CIGs possible Monday. MVFR to IFR CIGs/VSBYs are possible again Tuesday into Tuesday night.

ILN WATCHES/WARNINGS/ADVISORIES

OH...Cold Weather Advisory until 10 AM EST Sunday for OHZ026-034-035- 042>046-051>056-060>065-070>074-077>082-088. KY...Cold Weather Advisory until 10 AM EST Sunday for KYZ089>100. IN...Cold Weather Advisory until 10 AM EST Sunday for INZ050-058-059-066- 073>075-080.