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Forecast discussion:
Change is returning to Colorado as a front (seen in tonight's forecast map in Figure 1) approaches. This map also predicts thunderstorms in the area this afternoon.
Figure 2 shows the next three days graphically for Longmont. There is a 15% chance of thunderstorms today, but an almost 50/50 chance for Monday afternoon. The higher chances of thunderstorm activity Monday (with temperatures dramatically lowered to the lower 70'sF by the front) runs from roughly noon to 6pm Monday.
Figure 3 is the severe weather outlook for today - and we are in the marginal (1 on a scale of 1-5) today with a slight (2 on a scale of 1-5) just along I-25 and eastward (a large area).
Figure 4 is Monday's (Memorial Day's) outlook, and it is very similar with the slight (2 of 5 scale) maybe just back a bit closer to us. The primary threat of severe weather both days is of hail and high winds. There is a bit of a better chance of isolated tornadoes in the slight risk area (not too far away!).
Figure 5 is the weather map for Monday morning, with more thunderstorm action behind the front.
The longer range forecast:
We repeat last week very closely with a chance of afternoon thunderstorms Tuesday and Wednesday as the temperatures rise. Then we break 90F again and the atmosphere dries out. Thunderstorms, and a bit of cool down may return at the end of the week. Nothing TOO notable!