Unusually cold conditions likely for Saturday...

Expected impacts:

• An isolated thunderstorm cannot be ruled out mainly from after 10pm on Friday through 6am on Saturday
• Gusty North winds, much cooler temperatures and scattered areas of light rain showers can be expected during the day on Saturday
• Daytime temperatures on Saturday will mainly hold in the upper 40s to lower 50s across most of the local area
• Gusty North winds will create wind chill values mainly in the 30s to lower 40s during much of the day on Saturday

Discussion:

An unusually strong cold front (for this time of year) will move from Northwest to Southeast across the local area starting late on Friday evening (likely after 10pm) into the early nighttime hours on Friday night. Isolated thunderstorms are possible behind the cold front, mainly from after 10pm on Friday through about 6am on Saturday. Thunderstorm activity will likely be more numerous to the East of the local area during the overnight hours on Friday night and the pre-dawn hours on Saturday morning.

If an isolated thunderstorm were to manage to develop locally during the above time period, it could produce gusty winds and/or hail, but again, at this time any such activity is likely to be very isolated in nature (if it forms at all), with the probability of any given location being impacted at less than 20 percent.

Behind the cold front on Saturday, gusty North winds, much cooler temperatures and scattered areas of light rain showers can be expected. Daytime temperatures on Saturday will mainly hold in the upper 40s to lower 50s across most of the local area. Gusty North winds will create wind chill values mainly in the 30s to lower 40s during the day on Saturday.

We will continue monitoring the situation and issue updates as conditions warrant.