Updated Fri 8/05 9:52 AM —We had some showers Thursday evening, more widespread than had been forecast by the models. 

For today, Friday, there’s a range of forecasts, with many models showing little in the way of rainfall to as much as an inch.  The trend is for not much.  Timing varies from as early as mid to late afternoon, to storms moving through late evening and even after midnight.

I’m curious whether the new, experimental limited area model clarifies the forecast. It has maintained a forecast of a moderate cluster of storms early evening.  

Updated Wed 9:38 PM — The forecast is unchanged for Thursday.  Very hot and humid.  A few scattered thunderstorms my pop up after 5 PM, but with low vertical shear, they won’t last long or cover much territory.

A cold front approaches on Friday. A large cluster of thunderstorms will develop in western suburbs and move into the city between 6 and 8 PM. Some heavy rain possible with these storms. Shear values will again be low, so we’ll have to see if the models are getting this right.

Update Tue 08/02 @ 8:20 PM — Not much happening except increasing heat. A weak front moved through about 1 PM today. A few isolated showers broke out with the frontal passage (not predicted by the models.)

The increasing temperatures for Wednesday and Thursday are well-advertised by the regular radio and TV media.

Here’s some specifics info for Thursday based on the current NBM model —

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