[Araucaria Dx] Estação N0NI
Paulo PV8DX
paulopv8dx em gmail.com
Quarta Setembro 2 09:01:10 -03 2020
Estação de conteste conhecida de Toni Radebaugh, N0NI
Sofreu sérios danos
Segundo a reportagem.... O pior problema foi as grandes árvores.
As torres que estavam afastadas suportaram o furacão em IOWA.
Ele promete reconstruir longe das árvores
*The August 2020 Midwest Derecho**- by**Mark**Obermann**, AG9A*
On August 10, 2020, a severe weather phenomenon known as a derecho
developed over the Midwest, forming near the border of South Dakota and
Nebraska. It traveled 770 miles at an average speed of 55 mph over five
states before eventually dissipating over eastern Indiana and Ohio.
Derecho means straight in Spanish and describes the fast moving and long
lasting high straight-line speed wind storms that can generate hurricane
force winds and produce tornados within the thunderstorms. While
uncommon, they are generally most prevalent in the northern hemisphere
during the months of June, July and August.
Wide swaths of the Midwest were affected, but the most severe damage
occurred in several different areas along its path. The highest
estimated wind speeds reached 140 mph (equivalent to a Category 4
hurricane) and took place over Iowa. One of the amateur stations that
sustained heavy damage was the contest station of Toni Radebaugh, N0NI,
located near Rippey, Iowa. The weather forecast for that day included a
30 percent chance of rain with no mention of severe storms. The storm
arrived at around 11 AM. In the roughly 30-40 minutes that followed, ten
towers were either lost or severely damaged affecting a total of
thirty-five HF Yagis. With area winds estimated in excess of 100 mph,
many trees, including seventeen 100-year-old cedars on the west side of
the towers (and just out of view in the photos) snapped and landed on
multiple guy wires. This caused the towers to bend and break, bringing
down the towers, antennas and other nearby towers that may have been in
the way. The towers and antennas outside of the tree line were not
affected, including a homebrew full-size 3-element 40 meter Yagi at
196', a real testament to the robust design of the towers and antennas
at Toni's station. Toni stated that he had not lost a tower in 43 years,
but when he finally did, it was spectacular.
In addition to the tower damage, trees came down on the house and the
surrounding corn fields were crushed by the winds resulting in a total
loss of much of this year's crop.
Toni vows to rebuild a number of towers and antennas as that is his
favorite thing to do in Amateur Radio. This time, they may not go up as
high, and of course, they'll be spaced farther away from the remaining
trees.
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