Winter feel slow to ease, April level warmth this weekend; new cold surge long range

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COLD IS SLOW TO EASE

Snow showers late tonight should not amount to much in accumulation and depart well before the Wednesday morning commute. Clouds and more importantly early fog, will return on Wednesday.

Latest HRRR Central Indiana Composite Radar Snow ONLY

 

CHECKING IN ON THIS WINTER'S TEMPERATURES

Tuesday was the first day that the average temperature was above normal in over a week.  The recent chill has taken a toll on the 'warm' winter we are having, lowering from 11th warmest to 15th warmest on record. To date 61% of the days since December 1st have been above normal.

Winter temperatures

While the major El Nino has lived up to its billing nation-wide, it is interesting to look at the winter season temperatures. If we remove the warm December, temperature-wise there have been a equal number of above normal days vs below normal days since January 1st.

MRCC temp departure from normal January

MRCC temp departure from normal January

MRCC temp departure from normal February

MRCC temp departure from normal February

AWAITING THE WARM UP

We go back to above normal, in fact way above normal territory entering the weekend. We will rewrite the entire North American weather pattern and bathe the nation with mild, oceanic air. The jet stream will flatten and run west to east starting Friday. Temperatures are expected to climb 20 degrees above normal and reach early April levels.

Regional 18z RPM 4km-12km 72hr PRESSURE LINES

Warm Anamoly

HOLD ON SPRING - WINTER ISN'T DONE YET

Winter isn't done, not by a long shot. Cooling begins again early next week and longer range, some cold weather indicators are showing new cold surges through early March.  Note the map below, the buckle in the jet stream returns middle of next week.  Colder air due here again after the spring-like warmth.

500z_f192_bg_NA (3)