Migration-related Weather Report

Great day (12+ hours) of birding today. Up again early tomorrow. The weather/wind prediction for tonight is very interesting, as posted below (can't really be bothered with getting the formatting perfect right now). Continued W/SW winds changing to N/NW winds right about 3 am. Picture the Chicago lakefront as a line running roughly from north to south. Strong SW winds push migrants up against the lakefront. Those birds will be slowed or put down by the N/NW winds overnight. That's a pretty good recipe for a fallout tomorrow morning, probably depending on how strong the SW winds are, when the winds shift, and how hard the winds blow out of the N/NW. The tricky thing is the fallout could be right along the lakefront, or it could be pretty far inland, depending on when the winds change. Might be a nice night to go up on the rooftops or keep an eye on the NEXRAD radar.

Or, of course, it could be nothing.

That's why birders get up so early in the morning!!!

UPDATE:
11:57 pm--we just got back down from our roof deck (about 45 stories high, it has been closed for renovations the last couple of weeks) and it is pretty slow up there. Only a bird or two per minutes, the winds seem to have already shifted, and the clouds and rain are almost here already. The birds that took flight early tonight might have some problems, but it doesn't sound like a big flight. Again, who knows what will be here in the morning, that's why we're going to bed soon.


10pm
Partly Cloudy65°F
65°F
10%
47°F
52%
From SW 11 mph

11pm
Partly Cloudy63°F
63°F
10%
48°F
58%
From SW 11 mph

12am
Mostly Cloudy61°F
61°F
10%
48°F
62%
From WSW 10 mph

1am
Mostly Cloudy60°F
58°F
10%
47°F
62%
From WSW 10 mph

2am
Mostly Cloudy58°F
56°F
20%
47°F
67%
From W 9 mph

3am
Isolated T-Storms56°F
54°F
30%
47°F
72%
From WNW 8 mph

4am
Isolated T-Storms55°F
53°F
30%
47°F
74%
From NW 7 mph

5am
Isolated T-Storms54°F
52°F
30%
47°F
77%

Sunrise 5:26 am

6am
Isolated T-Storms54°F
51°F
30%
46°F
74%
From N 9 mph

7am
Isolated T-Storms55°F
52°F
30%
45°F
69%
From N 10 mph

8am
Isolated T-Storms56°F
53°F
30%
45°F
67%
From NNE 11 mph