I downloaded part of the FCC database as a pipe-delimited file from the AM Query, with my search scope set to licensed stations only. I then went through, and with various sorts, came up with the following list. (I also checked a few of the "DAD" listings, as I know that some of them are directional at night, for example 1000 KCEO and 910 WFDF, and corrected those.)
Anyway, here's my list. I set 500 watts as the cutoff point.
There are 42 stations below 250 watts, 20 stations at 250 watts, and 52 stations between 251 and 499 watts, that are not included on the list.
5,000 watts:
590-KXSP Omaha, NE
610-KEAR San Francisco, CA
610-KCSP Kansas City, MO
920-KXLY Spokane, WA
1150-KSAL Salina, KS
1370-KXTL Butte, MT watts
1250-KWSU Pullman, WA - 2,500 watts
790-KGHL Billings, MT - 1,800 watts
1,000 watts:
550-KFYI Phoenix, AZ
560-WQAM Miami, FL
640-WFNC Fayetteville, NC
870-KPRM Park Rapids, MN
880-KWIP Dallas, OR
910-KPOF Denver, CO
910-WALT Meridian, MS
960-WRNS Kinston, NC
1030-KMAS Shelton, WA
1260-KSFB San Francisco, CA
1260-KTRC Santa Fe, NM
1270-KTFI Twin Falls, ID
1280-KFRN Long Beach, CA
1280-KIT Yakima, WA
1290-KCUB Tucson, AZ
1300-KCSF Colorado Springs, CO
1300-WOAD Jackson, MS
1310-KEIN Great Falls, MT
1360-KLSD San Diego, CA
1360-WKAT North Miami, FL
1390-KRRZ Minot, ND
1430-WLKF Lakeland, FL
1440-KMED Medford, OR
1470-KELA Centralia-Chehalis, WA
1480-KGOE Eureka, CA
1420-KUJ Walla Walla, WA - 900 watts
640-WVLG Wildwood, FL - 860 watts
1160-WSKW Skowhegan, ME - 730 watts
700-KMBX Soledad, CA - 700 watts
1030-KJDJ San Luis Obispo, CA - 700 watts
1390-KZZD Salem, OR - 690 watts
1030-KDUN Reedsport, OR - 630 watts
610-WAGG Birmingham, AL - 610 watts
1160-WAIX Mechanicville, NY - 570 watts
500 watts:
740-KATK Carlsbad, NM
800-WJAT Swainsboro, GA
800-KPDQ Portland, OR
840-KSWB Seaside, OR
880-KJJR Whitefish, MT
920-KVEC San Luis Obispo, CA
1210-KEBR Rocklin, CA
1280-KLDY Lacey, WA
1300-KROP Brawley, CA
1380-KBWD Brownwood, TX
1380-KHEY El Paso, TX
1420-WQBC Vicksburg, MS
1440-WHIS Bluefield, WV
1470-WMGG Dunedin, FL
1470-KLCL Lake Charles, LA
1470-KKTY Douglas, WY
1570-WLKD Minocqua, WI
1600-WKWF Key West, FL
Anyway, here's my list. I set 500 watts as the cutoff point.
There are 42 stations below 250 watts, 20 stations at 250 watts, and 52 stations between 251 and 499 watts, that are not included on the list.
5,000 watts:
590-KXSP Omaha, NE
610-KEAR San Francisco, CA
610-KCSP Kansas City, MO
920-KXLY Spokane, WA
1150-KSAL Salina, KS
1370-KXTL Butte, MT watts
1250-KWSU Pullman, WA - 2,500 watts
790-KGHL Billings, MT - 1,800 watts
1,000 watts:
550-KFYI Phoenix, AZ
560-WQAM Miami, FL
640-WFNC Fayetteville, NC
870-KPRM Park Rapids, MN
880-KWIP Dallas, OR
910-KPOF Denver, CO
910-WALT Meridian, MS
960-WRNS Kinston, NC
1030-KMAS Shelton, WA
1260-KSFB San Francisco, CA
1260-KTRC Santa Fe, NM
1270-KTFI Twin Falls, ID
1280-KFRN Long Beach, CA
1280-KIT Yakima, WA
1290-KCUB Tucson, AZ
1300-KCSF Colorado Springs, CO
1300-WOAD Jackson, MS
1310-KEIN Great Falls, MT
1360-KLSD San Diego, CA
1360-WKAT North Miami, FL
1390-KRRZ Minot, ND
1430-WLKF Lakeland, FL
1440-KMED Medford, OR
1470-KELA Centralia-Chehalis, WA
1480-KGOE Eureka, CA
1420-KUJ Walla Walla, WA - 900 watts
640-WVLG Wildwood, FL - 860 watts
1160-WSKW Skowhegan, ME - 730 watts
700-KMBX Soledad, CA - 700 watts
1030-KJDJ San Luis Obispo, CA - 700 watts
1390-KZZD Salem, OR - 690 watts
1030-KDUN Reedsport, OR - 630 watts
610-WAGG Birmingham, AL - 610 watts
1160-WAIX Mechanicville, NY - 570 watts
500 watts:
740-KATK Carlsbad, NM
800-WJAT Swainsboro, GA
800-KPDQ Portland, OR
840-KSWB Seaside, OR
880-KJJR Whitefish, MT
920-KVEC San Luis Obispo, CA
1210-KEBR Rocklin, CA
1280-KLDY Lacey, WA
1300-KROP Brawley, CA
1380-KBWD Brownwood, TX
1380-KHEY El Paso, TX
1420-WQBC Vicksburg, MS
1440-WHIS Bluefield, WV
1470-WMGG Dunedin, FL
1470-KLCL Lake Charles, LA
1470-KKTY Douglas, WY
1570-WLKD Minocqua, WI
1600-WKWF Key West, FL