| Florida |
FL,LA, MS |
Clearwater, St. Petersburg, Tampa |
| Great Plains Tornado Alley |
AR, KS, NE, OK |
|
| Hudson-Mohawk |
NY (zips 10500-12800) |
Niskayuna, Troy |
| Michigan |
MI |
Detroit |
| Mid-Atlantic |
DC, NC, MD, VA, WV |
Newport News, Washington DC, Raleigh |
| Minnesota |
MN, ND, SD, WI (zips 540, or 544-548) |
Minneapolis, St. Paul |
| New England |
MA, ME, VT, NH, RI, CT, NY (1000-10499, 11000-11999) |
Northwest Suburban Boston |
| New Mexico |
NM, AZ and parts of TX in Mountain Time |
Albuquerque, Santa Fe |
| Northern California |
CA (zip 93700-96099), NV |
San Francisco Bay Area |
| Ohio |
OH |
Cleveland |
| Pacific Northwest |
WA, OR, ID, B.C |
Portland, Albany, Seattle, Richland |
| Prairie |
IA, IL, IN, MO, WI, (zip 530-539, 541-543, and 549) |
Chicago |
| Rocky Mountain |
MT, WY, UT, CO |
Denver, Boulder |
| Southern California |
CA (zips 90000-93599) |
Los Angeles |
| Tennessee Valley |
TN, KY, AL, GA, SC |
Oak Ridge, Atlanta, others |
| Texas |
TX |
Dallas-Fort Worth, Austin, Houston |
| Western Pennsylvania |
Western PA (zips 15000-16899) |
Pittsburgh, State College |