Seattle, WA January 31, 2011

Where is Seattle?

Lots of terrain and orography

Satellite ops/ Some high clouds in the area, but they are to the north. There appears to be a ridge in the area for now.

Radar ml?id=XSIhttp:// ml?id=XSI ad.php?icao=KATX&prod=bref1&bkgr=black&en dDate= &endTime=-1&duration=0http:// ad.php?icao=KATX&prod=bref1&bkgr=black&en dDate= &endTime=-1&duration=0 Not much on radar except for areas of heavy precip? Or is that something else? Hmm…

METARS ex.php?metarIds=KSEA&hoursStr=past+6 0+hours&std_trans=translated&num_meta rs=number&submit_metars=Retrieve ZzZzZzZz Boring

Models 500 mb height and vorticity: – 18/index_500_m_loop.shtmlhttp:// 18/index_500_m_loop.shtml 700 mb moisture: – 18/index_700_m_loop.shtmlhttp:// 18/index_700_m_loop.shtml MSLP, Precip, and 850mb T: – 18/index_pcp_m_loop.shtmlhttp:// 18/index_pcp_m_loop.shtml SFC T: – _sfc_temp&loop=1http:// _sfc_temp&loop=1

Long wave ridge pattern Strong High pressure to the south –Stable –Subsidence Temperature gradient near the coast

MOS bin/mos/getall.pl?sta=KSEA The MOS values are pretty similar to each other, so there is good agreement between models.

High 44 –North winds will be light –Clouds look to be lingering Low 31 –Clouds hanging around overnight –Light winds so more cooling

Winds 7 –Winds might pick up if there is some clearing Precip 0 –Longwave ridge patter –High pressure

Forecast Comparison Me – NWS –44 32 light 0 HIG 370