GFS Forecast: analysis time: 12Z 2018-08-10 :: valid time: 22Z 2018-08-14 ( Alaska LT: Tue. 2018-08-14 14:00PM)
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 [11:49PM, Sun. Aug. 12, 2018 PST]:
Conditions similar to previous forecasts. The LLJ is shifted to the south (72 °N) and at higher altitude.
Update [12:00PM, Fri. Aug. 10, 2018 PST]:
Sea ice edge is north of 76°N. High relative humidity north of 72 °N, although the visibility is still high, over 5 miles. Low clouds cover the entire region. A warm front is to the west of 150 °W. Surface winds are southwesterly to the south and southerly to the north along 150°W. Winds veer to northerly and northwesterly at 700 hPa (~10,000 ft). Around 76 °N near 500 m, there is a wind maximum (not too strong though) near sea ice edge, which is likely related to the interaction between the surface low to the northwest and the eastern extension of the surface high over the Siberia.
 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 |
 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 |
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