Discussed in the following Daily reports:
Status: Ongoing analysis Material from: Linus
Discussed in the following Daily reports: |
On 12-14 January western-central Norway and parts of the Swedish mountains were hit by heavy precipitation. In the mild air it fell as rain in my places. The event was caused by a strong atmospheric river hitting the mountain range.
The plots below show analyses of MSLP and 6-hour forecasts of precipitation from 11 January 00UTC to 15 January 00UTC, every 12 hour.
The plots below show analyses of z500 (contour) and T850 (shade) from 9 January 00UTC to 15 January 00UTC, every 24 hour.
The plots below show observations from SYNOP (first plot) and HRES forecasts of 72-hour precipitation valid 12 January 00UTC - 15 January 00UTC, from different initial dates. The black box marks a region south of Trondheim, Norway.
The plots below show EFI for 3-day precipitation 12-14 January, from different initial times.
The plots below show the same as above but for integrated water-vapor flux as a measure for atmospheric river features.
The plot below shows the forecast evolution plot for 72-hour precipitation valid 12-14 January centered south of Trondheim, Norway (0.5x0.5 degree box). Mean of observations - green, HRES –red, ENS CF – purple, ENS blue box-and-whisker, Model climate – red box-and-whisker. Triangle marks the maximum in the model climate based on 1200 forecasts, The black square marks the ensemble/climate median and diamond ensemble/climate mean. The ensemble started to pick up the event more than 10 days before the end of the accumulation period.
