Posted by: pyeager | July 24, 2009

Seattle Forecasts from Friday Morning

Since there was some discussion about what various forecast  outlets are forecasting for the upcoming heat wave in the Seattle area on the Cliff Mass Weather Blog, specifically the Drought and Heat entry, I thought I’d try something new today.

What follows is the forecast high temperatures for the next several days from seven major Internet weather providers. While the numbers often change dramatically from computer run to computer run on Internet sites, it will still be an interesting one-time comparison. If there’s enough interest, I’ll give an update on these forecasts over the weekend.

The name of the site will be followed by 6 numbers, which are the forecast high temperatures from Friday (July 24) through Wednesday (July 30). I’m sorry, but I dont know how to make them into a nice, neat table. (I’m a weather man, not a graphic designer!)

nws                                          77, 86, 90, 92, 94, 86                             82, 87, 91, 92, 94, 93                     79, 85, 85, 92, 93, 95                      76, 85, 80, 89, 79, 79                           82, 87, 91, 92, 94, 93                     80, 83, 85, 86, 88, 88        74, 83, 88, 90, 90, na

NOTE: All of the Internet databases have multiple locations for the Seattle area; these forecasts are those that came  up for the search Seattle, Wa, not a zip code search; the NWS forecast is fore Seatac.

–Paul Yeager

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  1. I’d be interested in reading a follow-up. I see Weatherbug is apparently off in never-never land as usual. Why are they 10-15 degrees cooler on days 3, 5, and 6? (That’s rhetorical…)


    • I’ll definitely at least follow-up with a final comparison after verification, Erik. Yeah, I even checked the Weatherbug numbers twice since they seemed odd–I’ll try to remember to check again tomorrow morning to see if they fall more in line.

      Maybe you want to follow their Memphis forecast to see if it’s out of line there, too?


  2. I noticed that is revising upwards again

    82, 87, 91, 94, 97(!), 90

    • The 12z model data is probably getting plugged into the system–they may all be changing some shortly.

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