Significant and Catastrophic Flooding in the Pacific Northwest; Very Cold Temperatures in the Northern Plains

The atmospheric river over the Pacific Northwest will begin to subside today, but lingering rainfall will exacerbate ongoing catastrophic major river flooding, and landslides will continue across portions of western Washington and northwest Oregon for several days. Arctic air will plummet southward into the Northern Plains today, bringing cold air in the single digits to the region by Friday. Read More >

Months of Peak Tornado Occurrence
1950-1991

Alabama - March through May, November
Alaska - NA
Arizona - July through September
Arkansas - March through May
California - January through April
Colorado - May through June, August
Connecticut - June through August
Delaware - June through August
Florida - May through July
Georgia - March through May
Hawaii - NA
Idaho - June through August
Illinois - April through June
Indiana - April through June
Iowa - April through June
Kansas - April through June
Kentucky - April through June
Louisiana - March through May, November
Maine - June through August
Maryland - May through July
Massachusetts - June through August
Michigan - May through July
Minnesota - May through July
Mississippi - March through June, November
Missouri - April through June
Montana - May through July
Nebraska - May through July
Nevada - May through August
New Hampshire - June through August
New Jersey - June through August
New Mexico - July through September
New York- June through August
North Carolina - March through June
North Dakota - June through August
Ohio- April through June
Oklahoma - April through June
Oregon - April through June
Pennsylvania - May through July
Rhode Island - August
South Carolina - March through May
South Dakota - June through August
Tennessee - March through May
Texas - April through June
Utah - May through June, August
Vermont - June through August
Virginia - April through June
Washingthroughn - April through June
West Virginia - May through July
Wisconsin - May through July
Wyoming - May through July