July 10, 2019

  GFS Forecast: analysis time: 12Z 2019-07-06 :: valid time: 00Z 2019-07-11 ( Alaska LT: Tue. 2019-07-11 16:00PM)

Links to plots Below

• Fight Information (from 10 km resolution WRF runs forced by GFS data)
• Pan-Arctic maps (GFS)
• Beaufort and Chukchi seasonal ice zone (GFS)
• Transects along 150 °W (GFS)
• Flight conditions at different altitudes along 150°W (GFS)

Sea ice contours: 15% (blue), 50% (black), 90% (red)

2-m temperature contour: -1.8 °C

U/V transect contour: 0 m/s 

Update [11:30AM, Sun. Jul. 07, 2019 PST]:  

Area dominated by surface high pressure and weak winds. Higher up at 3 km (~10,000 ft), northerly winds. Low clouds all the way to 78 °N with cloud top below 1 km. 

Update [15:30PM, Sat. Jul. 06, 2019 PST]:  

Much more cloud cover compared to forecasts 24 hours ago. Lower visibility and lower ceiling height. Sea ice edge close to 74 °N now. 

Update [12:30PM, Fri. Jul. 05, 2019 PST]:  

Good surface visibility south of 73.6 °N and below 1 mile north of 74 °N. Ceiling height remains high till 74.5 °N. Surface wind is weak in general. 

• • Flight information

• Pan-Arctic maps

Sea ice concentration at analysis time	Mean sea leve pressure at valid time	700 hPa Geopotential Height
700 hPa temperature	700 hPa relative humidity	700 hPa wind speed
Pressure on 2PVU surface	Low-level cloud cover	Mid-level cloud cover

• Beaufort and Chukchi seasonal ice zone (the map is centered at 150 °W)

 middle cloud fraction

Sea ice concentration at analysis time	Mean sea leve pressure at valid time
2-m air temperature	2-m relative humidty
low cloud fraction	middle cloud fraction

• Transects along 150 °W

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• Flight conditions at different altitudes along 150 °W