DAILY BLOG - December 19, 2022
**** FIRST ALERT WEATHER DAY : THURSDAY 12/22 - MONDAY 12/26 ****
Good Morning! This is your daily forecast for Monday December 19, 2022.
SHORT TERM: (Today Through Wednesday)
Current radar analysis this morning shows some light precipitation near the TN river, moving out of West Tennessee. Radar trends also show some light precipitation moving into the Jonesboro Arkansas area as of 730 am this morning. I expect a few sprinkles this morning, and there could be couple of sleet pellets or snow flurries, but do not expect any impacts this morning. Consider the rest of the short term the "calm before the storm". A zonal flow is expected to set up, which will keep our area locally dry through Wednesday. Temperatures may struggle to get out of the 30s for highs given the extensive cloud cover that we are expecting.
LONG TERM: (Thursday through Monday)
Thursday will be a day of drastic change here in the Mid-South. At the beginning of the period, a weakening zonal flow should our area largely dry through late Morning Thursday. By afternoon, a period of cold rain will move through the mid-south and will likely continue up until the arctic front slams into our area. Once the front slams into our area, rain quickly transition to snow and a flash freeze appears increasingly likely Thursday PM. The current temperature forecast through the long term period has remains largely unchanged with the exception of a couple degrees colder than yesterday.
The current uncertainty in the forecast is the precipitation. Looking at the Weather Prediction Center's Winter Storm Severity index, it has a 40-60% of minor impacts from a Winter Storm across the northern half of West Tennessee, with much lower chances south of I-40. For now, will advertise impactful snowfall north of I-40, while keeping south of I-40 at the "Limited" impacts from snowfall for now. Model guidance continues to go everywhere with snow. The GFS has a higher end winter storm impacting our area with 5-9 inches of snow, while the Euro has only a dusting to near 2 inches across the area. Given this uncertainty, I will take middle ground for now and say 2-4 inches of snow seems a good possibility north of I-40, while south of I-40 may only see a dusting to an inch of snow. Of more certainty, travel impacts will occur from the Flash Freeze we are expecting. Travel could become very dangerous Thursday night into Friday morning, so travel is not advised this Christmas weekend. Regardless of the precipitation aspect, it is going to get downright cold, and you should prepare now for bitter cold!
CONFIDENCE:
Medium Confidence on Precipitation.
High confidence on all other elements
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