LET’S TRY FORECASTING AGAIN

[su_note note_color=”#ffffff”]Updated Thu 08:05 AM — Last night’s models continue with the same timing of the thunderstorms Thursday evening.  Some early scattered activity possible about 5 PM, but the main thunderstorm complex is predicted for 10 PM -12 midnight. [/su_note]

[su_note note_color=”#ffffff”]Updated Thu 07:20 AM — Last night’s models continue with the same timing of the thunderstorms Thursday evening.  Some early scattered activity possible about 6 PM, but the main thunderstorm complex is predicted for 10 PM -12 midnight [/su_note]

So, no forecaster and no model had predicted the bow-echo storms at noon today. The high temperature never reached the highly advertised 90°+ that had been predicted.

Last night’s models as well as the early morning HRRR model were particularly misleading; they certainly led me astray.   Had I only stayed with last evening’s forecast

Let’s move forward.

Thursday’s expected storms are forecast to occur between 6 PM and midnight, with mid to late evening (9-midnight) most likely. Heaviest rain and dynamics stay to our south.

NO MODEL GOT THIS RIGHT TODAY

No model got this right today.  And I look at all of them. The bow-echo that formed had been predicted to occur up near Allentown.

Radar 12:06 PM—

Radar 12:06 PM

 

So how bad were the models?

Here’s the 10 AM HRRR model forecast  for 12:00 PM, (two hours before the storms hit) —

10 AM HRRR model run  forecast for 12 noon

 

Here’s the 11 AM HRRR model forecast for 12:00PM—

11 AM HRRR model run simulated radar forecast for 12 noon.

So even one hour before the storms hit, the high resolution model didn’t forecast this bow echo line of storms.  Wow!