You'll get a chance to relax those winter coats later today and tomorrow, instead grab the light jacket and sunglasses. Although we are off to a cold start this morning with temperatures in the upper teens and low 20s around the state. This afternoon temperatures will pushing back towards the 40s. We did hit a high of 40° yesterday. Also, this will be a rather breezy weekend too. We may not get as high as we could have. Early week I was thinking mid to upper 40s today but had to shave off a few degrees. In fact yesterday, that high was achieved before 1pm. Temperatures slipped back the rest of the afternoon since the winds had tightened up.
We have a shot at 50 tomorrow but don't be fooled. The city will be hit with not one but 2 cold fronts Sunday & Monday. The first one on Sunday brings falling temperatures to the city. I have mixed feelings to where temperatures will be Saturday night. Its all dependent on the frontal passage. We'll be near 50s tomorrow afternoon. If its sluggish, i think we'll be around the mid 30s at midnight. If it cools off a little faster, we may be in the upper 20s at midnight. Regardless, anytime around midnight would be the best opportunity for our Sunday high. We'll be down in the upper teens by sunrise. Don't expect temperatures to climb back up much. If the skies are clouded up then temperatures will likely remain fairly steady in the upper teens or maybe low 20s. If we can squeeze out a lot of sunshine we may get back up to about the mid 20s. Sunday Night temperatures will fall back again to the mid teens.
All aboard! The artic express train is rolling through and you've been given a ticket that you can't throw back. As the polar vortex dips south, much bitterly cold air will come in. This will pack a big punch. A polar front will move through Monday bringing the coldest temperatures to the city in years. On Monday, it will be a struggle to get in the 20s. So far the coolest afternoon high is 22° back on January 2nd. We won't have a lot of moisture but we can certainly squeeze out some pesky snow showers that may lay down some light accumulation. Not much though, high pressure will be in the area. The higher the pressure, the less likely storms come up or whatever storms there are, are very very weak.
Tuesday Morning, temperatures plunge below the 5° low we had back on January 2nd. We'll have the coldest morning of the season since February 10, 2011 when the thermometer dipped subzero to -1°. Right now, temperatures look to flirt with that temperatures but I am going with 0°. I don't think afternoon temperatures will be in the single digits Tuesday, I say we reach the low teens. The last time we had an afternoon high in the single digits was 7#176; on Feburary 15, 2009. For those wondering, the record for the lowest high temperature that day is 10° originally recorded in 1889 and later again in 1930.
For the rest of the week, temperatures will sloooowly be back on the incline but much, if not all, of the week will be below normal. Could be looking at a light wintry mix Thursday changing to some snow on Friday. This is another weak system so again, don't expect too much snow.
Snowfall is something that is hard to come by this month. We've only picked up 0.3" of snow this month and that was on 1 day, New Years Day! We did have 4 other days where we did pick up trace amounts but if the month ended now this would be the 9th least snowiest January on record. Typically, January is supposed to be the #1 most snowiest month of the year. We should be sitting at 4.6" right now. Looking at the next week, we aren't looking at any significant snow systems. We may very well finish the month with below normal snowfall. However, a season as a whole (since December 1), we are still 3.6" of snow above normal. The average snowfall amount for the entire month of January is 8.6". On January 31st, the total snowfall since October 1st should be 16.6". Right now, we've picked up 15.3" (0.2" in November, 14.8" in December, 0.3" in January so far).
Lack of snow not for just Indiana but much of the midwest, has our (midwest) region with a current snow coverage at 18.9%. This is down 58.9% since January 1st when 77.1% of the midwest region was covered in snow. For the rest of the U.S. as a nation, the current snow coverage is at 44.6%. This is down 22% from the 66.6% coverage we had on New Years Day.
UPCOMING...
Here's a look below at yesterdays 12z run of teleconnection indices (weather indicators) of the North Atlantic Oscillation (NAO), Artic Oscillation (AO), and Pacific North American index (PNA). By looking at this, here's whats going on. You can see everything is pretty much negative for next week. A negative NAO and AO is what we like to see in the winter. As for the PNA, that really needs to be positive. It spikes on the 21st (MONDAY) which indicates that we may get some snow showers that day but since the East isn't expected to be very cold, we can't jump to the conclusion that this will be a very stormy setup. Usually When the PNA is positive though this means the cold is East while the warmth is west. This was very successful late last month.
As for the AO, you see it go up and down as a rollercoaster. This means cold air doesn't hold but instead comes in bursts. We'll get a cold blast, warm up. Then get another cold blast, and warm up again which continues to early February. Something that needs attention though is January 25/26th. Could be a stormy setup there. Perhaps warmer air followed by much cooler air. Could result in a severe weather outbreak. For Indiana, we may have rain on Friday Afternoon, then a wintry mix Friday Night, changing to snow on Saturday Morning. Saturday looks to be much colder than Friday. Will monitor and update in the days to come. Standby for further developments.
NAO
PNA
AO
DID YOU KNOW
Did you know we are now up to 207 consecutive days without a U.S tornado fatality. Every day is a new record. The previous record span was 197 days ending February 28, 1987.
INDIANA WEATHER HISTORY
This weekend in Indiana Weather History, New Whiteland set an all time state record low temperature of -36° on January 19, 1994. Also, on January 20, 1985, the temperatures dipped back to -22° which resulted in freezing and bursting pipes.
| JAN. 18 | JAN. 19 | JAN. 20 | JAN. 21 | JAN. 22 | JAN. 23 | JAN. 24 |
| FRIDAY | SATURDAY | SUNDAY | MONDAY | TUESDAY | WEDNESDAY | THURSDAY |
 |
|
 |
 |
|
 |
 |
| PARTLY SUNNY |
PARTLY SUNNY |
CLOUDY SOME SUN? |
LIGHT SNOW |
CLOUDS/SUN FLURRIES? |
MOSTLY SUNNY |
WINTRY MIX |
| WINDY | COLDER | |||||
| 40 | 47 | 25 | 18 | 14 | 24 | 36 |
| 31 | 19 | 11 | 1 | 7 | 18 | 29 |
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