Synoptic heat-health (and cold-health) watch-warning systems are available real-time for the following cities online:

• (LOT) Chicago
• (ILN) Cincinnati, Columbus, and Dayton
• (FWD) Dallas-Fort Worth
• (DMX) Des Moines and Waterloo
• (DTX) Detroit and Flint
• (HNX) Fresno and Bakersfield
• (GGW) Glasgow, MT
• (HGX) Houston
• (IND) Indianapolis
• (JAN) Jackson and Meridian
• (EAX) Kansas City and Columbia
• (ARX) La Crosse
• (LCH) Lake Charles and Alexandria
• (LZK) Little Rock and Pine Bluff
• (LOX) Los Angeles
• (MEG) Memphis and Tupelo
• (MPX) Minneapolis-St. Paul
• (LIX) New Orleans and Baton Rouge
• (OKX) New York
• (OUN) Oklahoma City
• (PHI) Philadelphia and Delaware
• (PSR) Phoenix and Yuma
• (PQR) Portland
• (LSX) Saint Louis
• (MTR) San Francisco and San Jose
• (SEW) Seattle
• (SHV) Shreveport and Monroe
• (LWX) Washington and Baltimore