Heat Advisory issued June 29 at 1:08PM PDT until July 1 at 9:00PM PDT by NWS Pendleton OR

MD 1522 CONCERNING SEVERE POTENTIAL...WATCH UNLIKELY FOR PARTS OF THE MID-ATLANTIC STATES Mesoscale Discussion 1522 NWS Storm Prediction Center Norman OK 1107 AM CDT Mon Jun 30 2025 Areas affected...parts of the Mid-Atlantic States Concerning...Severe potential...Watch unlikely Valid 301607Z - 301800Z Probability of Watch Issuance...20 percent SUMMARY...Isolated damaging winds from sporadic strong gusts along with small hail will be possible with slow-moving, scattered thunderstorms through late afternoon. DISCUSSION...Convective development is increasing across western PA, downstream of an eastward-moving MCV over central OH, and along the lee of the central Appalachians across eastern WV. Overall thermodynamic environment appears fairly ubiquitous, outside

MD 1523 CONCERNING SEVERE POTENTIAL...WATCH UNLIKELY FOR EASTERN/SOUTHERN LOWER MI TO NORTHEAST IN AND NORTHWEST OH Mesoscale Discussion 1523 NWS Storm Prediction Center Norman OK 1146 AM CDT Mon Jun 30 2025 Areas affected...eastern/southern Lower MI to northeast IN and northwest OH Concerning...Severe potential...Watch unlikely Valid 301646Z - 301845Z Probability of Watch Issuance...5 percent SUMMARY...A broken line of thunderstorms may pose a risk for localized damaging winds and small hail through late afternoon. DISCUSSION...Along a weak cold front, a broken line of thunderstorms is bisecting Lower MI into far northern IN. Airmass immediately downstream has warmed into the low to