October 10, 2019

  GFS Forecast: analysis time: 12Z 2019-10-04 :: valid time: 21Z 2019-10-10( Alaska LT: Thur. 2019-10-10 13:00PM)

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 [12:00PM, Fri., Oct. 04, 2019 PST]:

Sea ice edge at 77.8 °N. Good surface visibility and ceiling height south of 76.5 °N. Cloudy at 72 °N and 73.5 °N. Surface temperature gets below 0 °C and close to -4 °C at 75 °N. 

A cyclone centered at 77 °N and 120 °W. Mostly northwesterly winds along the flight path. 

Update [15:00PM, Thur., Oct. 03, 2019 PST]:

Sea ice edge at 77.5 °N. Good surface visibility and ceiling height north of 76 °N. Surface temperature gets below 0 °C and close to -2 °C at 77 °N. 

A cyclone centered at 83 °N. Mostly westerly winds along the flight path. Few cloud cover.  

Update [14:45PM, Wed., Oct. 02, 2019 PST]:

Sea ice edge at 77.5 °N. Good surface visibility and ceiling height north of 72 °N. Surface temperature gets below 0 °C and close to -5 °C at 77 °N. 

The 150 °N line has not much weather, calm northerly winds, with thin low clouds. 

• • 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

• Flight conditions at different altitudes along 150 °W