Supercells popping up here out of nothing. DP 22 to 23 C. Already some hookechos visible. hail of 5 cm came down 4 km south of me....A warm layer was supposed to block supercell formation, but within 15 minutes out of nothing a huge supercell and mroe ont eh way.
This means Estofex has issued another MD (mesoscale discussion) completely reversing the one that came out today. It now reads:
"Convective storms are rapidly developing across west Belgium and the southern Netherlands. With surface dew points in the 20-23 C range, about 2000 J/kg of CAPE should be in place. Strong deep-layer (0-6 km) shear of 20-25 m/s aids in storm rotation, so that
storms quickly acquire rotation as is evident from the hook-echo features on KNMI radar. The storms can produce very large hail, severe wind gusts, extreme rainfall rates as well as a few tornadoes, given that
low level shear should be adequate for tornadogenesis: observed NE surface winds of 5 m/s topped by 10 m/s wind from the southwest at 850 hPa per NWP. Towards the end of the MD period, the storms will gradually become less surface-based and cluster, diminishing the tornado risk."
Issued this evening.....So we had a number of tornado's on monday and now we can have some more...
Look at this radar image and see the hook over central NL
I have one complaint: whay does htis have to happen at 22: 42 in august 30? If this happened in july we at lewast would be able to see it, now it is dark sadly...