TODAY: Today's weather was absolutely amazing with a crystal clear cobalt blue sky all day and a nice northerly wind fetching in low dewpoints and pleasant temperatures. Highs across the area ranged from the upper 70s to low 80s, with comfortable dewpoints everywhere in the 55-60F range.
LOOKING AHEAD: Yes, tomorrow will be pretty much the exact same as today: sunny and nice, but actually the morning will be a bit cooler. Expecting low temperatures for tomorrow morning to be in the lower 50s. Highs may top out a little warmer than today, but still nice. Lower 80s. Tuesday looks to be a day of change. After another cool morning starting in the lower 50s areawide, southerly winds will take over in the afternoon as our next storm system takes shape to our west. It will be more humid Tuesday afternoon as dewpoint values rise, with high temperatures in the upper 80s to near 90F. Tuesday night will be warm, 68-72F, setting the stage for a potential convectively active day for the region Wednesday. Cyclogenesis will take place across the plains Tuesday, and the area of low pressure will deepen as it moves east into the Great Lakes Tuesday night into Wednesday to under 1000mb. Attached to this low will be a strong cold front, associated with it the chance of severe weather. Convection will likely be ongoing Wednesday during the day for areas northwest of the Lower Ohio Valley, but this activity will stay north and west probably through the day with our greatest chance of storms coming in the evening hours. The 18z run of the GFS initalizes convection to our west by the mid afternoon, with northwestern parts of our region being affected by the late afternoon. This line will be pressing southeast across the area Wednesday evening, and the threat could remain until the early morning hours of Thursday. The numerical models are all showing this line weakening by the early morning hours as dynamic & diurnal support weakens, with different ideas as to the location of where the storms will weaken. This will come into better focus for the next few days. I think the main threat with this system will be damaging straight line winds, a low hail and tornado threat exists for now. For our area, I think the areas with the most likely chance to have any sort of severe weather will be across Southeast Illinois, with gradual lower chances of severe to the east of there across Southwest Indiana and Western Kentucky.
FALL ARRIVES: Behind the cold front, the October-like airmass will rush in, as a 1030mb surface high glides across the Great Lakes. Thursday, Friday, and the weekend will feature highs ranging from the upper 60s to the mid 70s. Not to mention, low temperatures will be crisp. Looking at the potential for upper 40s for low temps next weekend, with lower 50s a sure guarantee. Sunny skies will prevail for Thursday through Saturday, turning mostly cloudy though as an upper disturbance moves along Sunday associated with it a chance of light rain. All in all though, it will be delightful.
CLIMATE: 80F was the high temperature today at 2:49 PM. The low, thus far today, has been 59F at 5:51 AM. The normal high temperature for this date at Evansville is 85F, while the average low for September 7 is 61F. The record high for today is a sultry 101F, set in 1925, while the record low temperature for this date is 43F, set in 1988. Today we received 0.00" precipitation. The record daily amount for today is 1.49", set 100 years ago in 1914. Through September 7, Evansville has received 1.11" of rain, 0.44" above the normal through this date of 0.67". For the year, Evansville has received 35.29" of precipitation, above normal by 3.70". Through September 6, temperatures for the month have been running warmer than normal, with an average temperature so far this month being 77.5F, 3.8F above.
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