April’s wettest record will hold as warmest air in three weeks arrives

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CLOUDS BREAK

After heavy overcast skies brightened over Central Indiana and the April sun went to work Monday.  A 60° at 1 p.m. when the clouds started to break jumped to 68° by 5 p.m.  The clouds cleared from west to east early enough for a few 70° readings out west.  The official high of 68° in the city wast the warmest here in 12 days.

Visible Sat

Visible Satellite
4PM Monday

CLEAR NIGHT

It will cool under the clear skies to the lower 50’s by early Tuesday morning with some fog developing overnight.  Winds will remain fairly light from the southeast.  The recent rainfall + moist soil+ cool night may set up for fog especially away from the city.

RECORD APRIL RAIN

April 2013 will fall just shy of tying the wettest April on record at 8.59″.  The 120-year-old record of 8.60″ set in 1893 will live on in the record books as No. 1.  April rain has been impressive at nearly 2.5 times (234 percent) the normal at  5″ above.

Storm_Rainfall_totals

April 2013 2nd wettest on record

WARM SPELL

Heat has spread north from across the Southern and Central Plains. Nineties pushed as far north as southern Kansas and middle 80’s reached central Nebraska Monday afternoon.  High temperatures in the Texas panhandle reached a steamy high of 94° in Amarillo with 92° at Gage, Oklahoma.

80’s ARRIVE AS MAY OPENS

Rare air arriving this week!  May 1,  2013 will likely open at or above 80°, the first time since 83° in 2007 and for only the sixth time in 60 years!

MAY 80° OPENS:

  • 2007: 82°
  • 2001: 82°
  • 1992: 82°
  • 1965: 81
  • 1957: 82°
  • 1953: 80°
  • Record 89° in 1942

COOLER AND WET LATE WEEK

A blocking pattern will develop through the work week and a cold, rainy, slow-moving upper low is forecast to creep east by the weekend.  Late last week, there were stronger signals that this low would stall over Central Indiana by Friday, bringing unseasonably cold air with it.  Updated forecasts suggest the low will wobble somewhere between Wisconsin and Alabama – a huge spread and  an indication that there is much to be resolved to the weekend forecast.  As of Monday night, added rainfall will bring a cool down – the strength of which is still to be determined.

500z_f144_bg_US

Upper low forecast late week/weekend