Weather Underground Forecast for Sunday, November 08, 2009.
Europe will remain wet and dreary on Sunday as two weather systems combine and strengthen over central Europe. One low pressure system lingering over the central Mediterranean will continue picking up moisture and spreading scattered showers over Italy, Greece, and Croatia. Strong thunderstorms with heavy precipitation will develop over northern Italy and Switzerland. Rome may see thunderstorm development with highs remaining in the mid-50s(F)/ lower teens(C), while Barcelona will see lighter showers and highs dipping into the mid-60s(F)/ upper teens(C).
At the same time, a low pressure system spinning over the British Isles will quickly move southward on Sunday. This system will have obtained abundant moisture from the North Atlantic and will pick up additional moisture as it tracks over the English Channel. Flow around this system will trigger strong storms over western France as well as northern Spain and Portugual. By evening, this system will reach the system to the south, and allow for stronger rainfall and intense winds over central Europe. Paris and London will see continual showers throughout the day. Cooler temperatures over Scandinavia may allow for scattered snow flurries to develop. Oslo will see highs in the mid-30s(F)/ near 3(C), with overcast skies, while Stockholm will see another rainy day with highs in the lower 40s(F)/ near 5(C).
A trough will stretch into eastern Europe and western Russia. This will allow for additional showers in the east, thus, Moscow will remain dreary with highs in the lower 40s(F)/ near 5(C), as flurries will spread over Saint Petersburg with highs near 37(F)/ 3(C).
On this date in 1940, Galloping Gertie Bridge in Tacoma, Wash. collapsed in high winds. It turns out the bridge spans were evenly spaced, causing the bridge to vibrate wildly with a regular frequency in high winds. Since then, bridges have been built with uneven spans.