While we've had our fair share of chilly days this winter, true arctic outbreaks have been few and far between. We'll get one such outbreak later in the week, though, and when all's said and done, it's likely we'll record the season's first sub-zero temperatures by Friday Morning.
It's remarkable how late in the season it is for us to be even discussing our first sub-zero temperatures. Normally, by February 10, the Stateline should have seen more than ten such days!
As a storm system, likely to bring us a fresh coating of snow Wednesday into Thursday, departs Thursday afternoon, frigid air is to rapidly barrel into the Stateline. Temperatures, which will top out in the 20s early in the day, will fall into the teens in the afternoon, single digits in the evening, and ultimately below to well below 0° overnight. Factor in a rather gusty wind out of the northwest, wind chill values may drop to as low as -20° to -25° in spots early Friday Morning.
As it stands right now, our forecast low temperature of -8° Friday Morning would tie an all-time record for the coldest Valentine's Day temperature ever recorded. Daytime highs Friday of around 18° won't challenge any records, though it will mark the coldest Valentine's Day high temperature since 2007.
Brutal as the chill may be, it's only to be brief, much like previous cold spells. Significant warming begins Saturday, as temperatures reach back into the 30s. We'll flirt with 40° on Sunday, and likely be into the 40s by Monday. Long-range projections suggest a prolonged period of milder temperatures will likely carry us until the end of the month.