Record breaking heat on the way, rain chance drying up

Weather
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ANOTHER 90° DAY

Monday topped the 90° mark in the city with an official high of 93°.  This marked the 12th 90° day of the season and one of the hottest days so late in the year.  A scan of weather records reveals that this is only the 24th year in 142 years that a high temperature of 93° or higher has been reached.  Most recently in 2010 we had two days and the most ever occurred in 1897 with 8 days.

The afternoon heat index peaked at 100° in the city and reached 102° at Peru.

RECORD HEAT COMING

As first forecast last week, the intense hot dome in the central U.S. is migrating east and will deliver record to record-breaking high and low temperatures.  Beneath the weight of this upper-level high or “hot dome,” searing temperatures have occurred.  It reached 101° Monday in Des Monies, Iowa, and 98° in St. Louis, Missouri.  That is where our air is coming from Tuesday and Wednesday care of a southwest wind.  Local thermometers are set to cruise into the middle 90s and push to a record high here in the city at a forecast 95 degrees.  The record high for both Tuesday and Wednesday is 95, both within reach.  The warm air could even deliver a record warm minimum temperature as the early morning temps only fall into the lower or middle 70s!

SEPTEMBER 10TH

RECORD HIGH 95° (1983 / 1964)

RECORD WARM MINIMUM 74° (1919)

SEPTEMBER 11TH

RECORD HIGH 95° (1897)

RECORD WARM MINIMUM 72° (1931 / 1900)

Jet Stream
Hot Dome is Back as Forecast

DANGEROUS HEAT INDEX

The heat could reach 104° at many locations including the city over the next 2 days.  We are currently forecasting a heat index of 99° to 104° Tuesday and Wednesday.  Please stay cool and hydrated until relief arrives.

RELIEF COMING – COOLEST IN 3 MONTHS

A cold front will sweep the  state Thursday and deliver refreshing relief from the late season heat.  Current temperature forecasts suggest a 45-degree temperature change and a feels-like change of 55° by early Saturday morning.  In the city, the first sub 50° morning is possible since early June.

DESPERATE FOR RAIN

It is only getting worse.  The drought is back and any relief in the form of rainfall is very slim.  The 31 days since August 10 have produced only .30″ of rainfall–the driest for the dates ever on record.  The best “chance” for rain has been outlined for this Thursday for over a week, but the rainfall numbers seem to be drying up fast.  Off 2 machines the average is only .23″ over the next 7 days and it gets worse out 2.5 weeks.  Currently the long-range model is projecting only a total rainfall of .64″ or 36% the normal.  We will hawk over the latest computer runs desperately looking for the rainfall and will keep you up to date.

Dry Conditions
Driest 31 days stretch From Aug 10th to Sept 9th on record
Rainfall_Comparison
Rainfall forecast – It is not good

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