Finding Scott's meeting location | Nancy Drew : Trail of the Twister

Scott's office:
Debbie says that they need to go back to base and wait there.
Enter Scott's office. He is not here. Look at his desk. See a note sticking out of the locked drawer.
Use the key to open the drawer and read the note from Brooke.
Brooke will meet with Scott this afternoon. He will get paid and the terms are that Scott disappears until they are declared winner.
Scott left a clue to the meeting location:

 Review Surface charts:
*45+ dewpoint and continuous moderate rain.
*85 degrees + with either light hail, no thunder or severe thunderstorm with hail.
Find dates.

Find meeting location.

Go down to the cellar. Look under the laundry tub between the washer and dryer.

Storm weather symbols:

63 - moderate rain continuous. The symbol is made up of 3 black circles.

Check the symbol for Open the Surface Charts white folder at bottom shelf behind Frosty.

Look for the 3 storm weather symbols:

*45+ dewpoint and continuous moderate rain.

*85 degrees + with either light hail.

*85 degrees + no thunder or severe thunderstorm with hail.

They are found on:

March 3, 8, 18, 21 and 26.

April 3, 6, 10, 23, 29.

May 6 and 12.

Go back up to Scott's office and check the calendar right of his chair.
Start with March. Use your computer and type in the letters-numbers on the dates taken from the surface chart.
WM9A, GV2C, SH4A.

Laptop:  
Go down to the cellar. Check the gallery and look at each picture.
Check the pictures labeled WM9A, GV2C, SH4A. All 3 pictures show a windmill.