


Heat Index Forecast Tables
Issued by NWS
Issued by NWS
191 FMUS23 KWNH 170659 PRBEHI DAYS 3--7 HEAT INDEX FORECAST TABLES NWS WEATHER PREDICTION CENTER COLLEGE PARK MD 0658 UTC SAT MAY 17 2025 MEAN HEAT INDEX (DEG F) AND MEAN HI PROB (%) FRCSTS AT EASTERN US CITIES - DAYS 3 TO 7 FROM SAT MAY 17 2025 AKRON-CANTON_OH ALBANY_NY CAK 0520 0521 0522 0523 0524 ALB 0520 0521 0522 0523 0524 MEAN 52 55 51 53 55 MEAN 50 51 49 52 53 %>100 0 0 0 0 0 %>100 0 0 0 0 0 %>95 0 0 0 0 0 %>95 0 0 0 0 0 %>90 0 0 0 0 0 %>90 0 0 0 0 0 %>85 0 0 0 0 0 %>85 0 0 0 0 0 %>80 0 0 0 0 0 %>80 0 0 0 0 0 %>75 0 0 0 0 0 %>75 0 0 0 0 0 %>70 0 0 0 0 0 %>70 0 0 0 0 0 ASHEVILLE_NC ATLANTA_GA AVL 0520 0521 0522 0523 0524 ATL 0520 0521 0522 0523 0524 MEAN 71 69 58 55 58 MEAN 81 77 66 64 67 %>100 0 0 0 0 0 %>100 0 0 0 0 0 %>95 0 0 0 0 0 %>95 0 0 0 0 0 %>90 0 0 0 0 0 %>90 0 0 0 0 0 %>85 0 0 0 0 0 %>85 9 2 0 0 0 %>80 1 0 0 0 0 %>80 62 20 1 0 1 %>75 11 5 0 0 0 %>75 97 67 6 1 8 %>70 57 41 2 0 2 %>70 100 96 25 11 31 BALTIMORE_MD BIRMINGHAM_AL BWI 0520 0521 0522 0523 0524 BHM 0520 0521 0522 0523 0524 MEAN 59 58 58 59 61 MEAN 81 74 64 63 68 %>100 0 0 0 0 0 %>100 0 0 0 0 0 %>95 0 0 0 0 0 %>95 0 0 0 0 0 %>90 0 0 0 0 0 %>90 1 0 0 0 0 %>85 0 0 0 0 0 %>85 18 1 0 0 0 %>80 0 0 0 0 0 %>80 65 12 0 0 2 %>75 0 0 0 0 1 %>75 95 45 2 1 12 %>70 1 0 0 1 6 %>70 100 81 12 7 38 BOSTON_MA BUFFALO_NY BOS 0520 0521 0522 0523 0524 BUF 0520 0521 0522 0523 0524 MEAN 51 50 50 53 54 MEAN 47 50 51 50 53 %>100 0 0 0 0 0 %>100 0 0 0 0 0 %>95 0 0 0 0 0 %>95 0 0 0 0 0 %>90 0 0 0 0 0 %>90 0 0 0 0 0 %>85 0 0 0 0 0 %>85 0 0 0 0 0 %>80 0 0 0 0 0 %>80 0 0 0 0 0 %>75 0 0 0 0 0 %>75 0 0 0 0 0 %>70 0 0 0 0 0 %>70 0 0 0 0 0 CHARLESTON_SC CHARLESTON_WV CHS 0520 0521 0522 0523 0524 CRW 0520 0521 0522 0523 0524 MEAN 86 85 75 69 71 MEAN 61 64 55 55 59 %>100 0 0 0 0 0 %>100 0 0 0 0 0 %>95 0 0 0 0 0 %>95 0 0 0 0 0 %>90 10 10 0 0 0 %>90 0 0 0 0 0 %>85 59 51 2 0 0 %>85 0 0 0 0 0 %>80 96 92 14 0 2 %>80 0 0 0 0 0 %>75 100 100 50 6 18 %>75 1 2 0 0 0 %>70 100 100 86 40 60 %>70 6 12 0 1 3 CHARLOTTE_NC CHICAGO_IL CLT 0520 0521 0522 0523 0524 ORD 0520 0521 0522 0523 0524 MEAN 77 75 65 63 65 MEAN 49 49 51 53 58 %>100 0 0 0 0 0 %>100 0 0 0 0 0 %>95 0 0 0 0 0 %>95 0 0 0 0 0 %>90 0 0 0 0 0 %>90 0 0 0 0 0 %>85 3 1 0 0 0 %>85 0 0 0 0 0 %>80 24 12 0 0 0 %>80 0 0 0 0 0 %>75 69 54 1 0 2 %>75 0 0 0 0 0 %>70 96 92 14 3 14 %>70 0 0 0 0 2 CINCINNATI_OH CLEVELAND_OH LUK 0520 0521 0522 0523 0524 CLE 0520 0521 0522 0523 0524 MEAN 57 60 55 56 60 MEAN 52 55 53 54 57 %>100 0 0 0 0 0 %>100 0 0 0 0 0 %>95 0 0 0 0 0 %>95 0 0 0 0 0 %>90 0 0 0 0 0 %>90 0 0 0 0 0 %>85 0 0 0 0 0 %>85 0 0 0 0 0 %>80 0 0 0 0 0 %>80 0 0 0 0 0 %>75 0 1 0 0 1 %>75 0 0 0 0 0 %>70 2 7 1 1 4 %>70 0 0 0 0 1 COLUMBIA_SC COLUMBUS_OH CAE 0520 0521 0522 0523 0524 TZR 0520 0521 0522 0523 0524 MEAN 83 80 70 66 68 MEAN 54 58 54 55 58 %>100 0 0 0 0 0 %>100 0 0 0 0 0 %>95 0 0 0 0 0 %>95 0 0 0 0 0 %>90 0 1 0 0 0 %>90 0 0 0 0 0 %>85 20 11 0 0 0 %>85 0 0 0 0 0 %>80 83 53 2 0 0 %>80 0 0 0 0 0 %>75 100 92 16 1 5 %>75 0 0 0 0 0 %>70 100 100 54 13 32 %>70 0 3 0 0 1 DAYTON_OH DETROIT_MI MGY 0520 0521 0522 0523 0524 DET 0520 0521 0522 0523 0524 MEAN 56 59 54 55 59 MEAN 50 52 52 54 57 %>100 0 0 0 0 0 %>100 0 0 0 0 0 %>95 0 0 0 0 0 %>95 0 0 0 0 0 %>90 0 0 0 0 0 %>90 0 0 0 0 0 %>85 0 0 0 0 0 %>85 0 0 0 0 0 %>80 0 0 0 0 0 %>80 0 0 0 0 0 %>75 0 1 0 0 1 %>75 0 0 0 0 0 %>70 1 5 0 0 4 %>70 0 0 0 0 0 EVANSVILLE_IN GRAND_RAPIDS_MI EVV 0520 0521 0522 0523 0524 GRR 0520 0521 0522 0523 0524 MEAN 71 63 56 60 63 MEAN 48 50 50 53 56 %>100 0 0 0 0 0 %>100 0 0 0 0 0 %>95 0 0 0 0 0 %>95 0 0 0 0 0 %>90 0 0 0 0 0 %>90 0 0 0 0 0 %>85 0 0 0 0 0 %>85 0 0 0 0 0 %>80 3 1 0 0 0 %>80 0 0 0 0 0 %>75 22 3 0 0 2 %>75 0 0 0 0 0 %>70 63 15 0 1 11 %>70 0 0 0 0 0 GREENSBORO_NC HUNTSVILLE_AL GSO 0520 0521 0522 0523 0524 HSV 0520 0521 0522 0523 0524 MEAN 70 70 62 61 63 MEAN 81 73 62 63 66 %>100 0 0 0 0 0 %>100 0 0 0 0 0 %>95 0 0 0 0 0 %>95 0 0 0 0 0 %>90 0 0 0 0 0 %>90 2 0 0 0 0 %>85 0 1 0 0 0 %>85 17 3 0 0 0 %>80 1 5 0 0 0 %>80 58 13 0 0 1 %>75 13 22 0 0 1 %>75 92 38 1 1 7 %>70 47 53 5 1 7 %>70 99 69 8 7 26 INDIANAPOLIS_IN KNOXVILLE_TN IND 0520 0521 0522 0523 0524 TYS 0520 0521 0522 0523 0524 MEAN 56 57 53 56 60 MEAN 76 71 60 59 62 %>100 0 0 0 0 0 %>100 0 0 0 0 0 %>95 0 0 0 0 0 %>95 0 0 0 0 0 %>90 0 0 0 0 0 %>90 0 0 0 0 0 %>85 0 0 0 0 0 %>85 1 0 0 0 0 %>80 0 0 0 0 0 %>80 15 4 0 0 0 %>75 0 0 0 0 1 %>75 57 23 1 0 2 %>70 2 3 0 1 5 %>70 92 62 6 2 9 LEXINGTON_KY LOUISVILLE_KY LEX 0520 0521 0522 0523 0524 SDF 0520 0521 0522 0523 0524 MEAN 65 64 54 56 60 MEAN 67 63 56 58 61 %>100 0 0 0 0 0 %>100 0 0 0 0 0 %>95 0 0 0 0 0 %>95 0 0 0 0 0 %>90 0 0 0 0 0 %>90 0 0 0 0 0 %>85 0 0 0 0 0 %>85 0 0 0 0 0 %>80 0 0 0 0 0 %>80 1 0 0 0 0 %>75 4 2 0 0 0 %>75 7 3 0 0 1 %>70 19 13 0 0 3 %>70 29 14 1 1 7 MEMPHIS_TN MIAMI_FL MEM 0520 0521 0522 0523 0524 MIA 0520 0521 0522 0523 0524 MEAN 80 69 62 65 70 MEAN 90 92 91 87 86 %>100 0 0 0 0 0 %>100 1 4 4 1 0 %>95 0 0 0 0 0 %>95 9 24 20 6 2 %>90 1 0 0 0 0 %>90 46 65 62 27 16 %>85 13 0 0 0 1 %>85 88 93 93 64 55 %>80 55 3 0 0 5 %>80 99 100 100 91 89 %>75 91 14 0 2 21 %>75 100 100 100 99 99 %>70 100 42 5 15 50 %>70 100 100 100 100 100 MILWAUKEE_WI MOBILE_AL MKE 0520 0521 0522 0523 0524 MOB 0520 0521 0522 0523 0524 MEAN 46 47 48 50 53 MEAN 86 83 73 71 74 %>100 0 0 0 0 0 %>100 0 0 0 0 0 %>95 0 0 0 0 0 %>95 0 0 0 0 0 %>90 0 0 0 0 0 %>90 8 5 0 0 0 %>85 0 0 0 0 0 %>85 60 33 2 0 0 %>80 0 0 0 0 0 %>80 97 78 11 3 6 %>75 0 0 0 0 0 %>75 100 98 36 20 42 %>70 0 0 0 0 0 %>70 100 100 70 59 87 NASHVILLE_TN NEW_YORK_CITY_NY BNA 0520 0521 0522 0523 0524 NYC 0520 0521 0522 0523 0524 MEAN 79 70 60 62 65 MEAN 57 55 53 57 59 %>100 0 0 0 0 0 %>100 0 0 0 0 0 %>95 0 0 0 0 0 %>95 0 0 0 0 0 %>90 0 0 0 0 0 %>90 0 0 0 0 0 %>85 6 1 0 0 0 %>85 0 0 0 0 0 %>80 36 6 0 0 1 %>80 0 0 0 0 0 %>75 79 22 0 0 5 %>75 0 0 0 0 0 %>70 98 52 4 4 20 %>70 0 0 0 1 3 NORFOLK_VA ORLANDO_FL ORF 0520 0521 0522 0523 0524 ORL 0520 0521 0522 0523 0524 MEAN 67 68 66 64 66 MEAN 90 88 84 79 79 %>100 0 0 0 0 0 %>100 0 0 0 0 0 %>95 0 0 0 0 0 %>95 2 0 0 0 0 %>90 0 0 0 0 0 %>90 47 16 6 1 0 %>85 0 0 0 0 0 %>85 98 91 42 10 8 %>80 0 2 0 0 0 %>80 100 100 87 45 43 %>75 2 12 3 1 4 %>75 100 100 99 85 85 %>70 20 37 21 8 22 %>70 100 100 100 99 99 PHILADELPHIA_PA PITTSBURGH_PA PHL 0520 0521 0522 0523 0524 PIT 0520 0521 0522 0523 0524 MEAN 57 55 55 58 59 MEAN 54 55 52 53 56 %>100 0 0 0 0 0 %>100 0 0 0 0 0 %>95 0 0 0 0 0 %>95 0 0 0 0 0 %>90 0 0 0 0 0 %>90 0 0 0 0 0 %>85 0 0 0 0 0 %>85 0 0 0 0 0 %>80 0 0 0 0 0 %>80 0 0 0 0 0 %>75 0 0 0 0 0 %>75 0 0 0 0 0 %>70 0 0 0 1 3 %>70 0 1 0 0 1 PORTLAND_ME PROVIDENCE_RI PWM 0520 0521 0522 0523 0524 PVD 0520 0521 0522 0523 0524 MEAN 49 47 45 49 51 MEAN 52 51 51 54 55 %>100 0 0 0 0 0 %>100 0 0 0 0 0 %>95 0 0 0 0 0 %>95 0 0 0 0 0 %>90 0 0 0 0 0 %>90 0 0 0 0 0 %>85 0 0 0 0 0 %>85 0 0 0 0 0 %>80 0 0 0 0 0 %>80 0 0 0 0 0 %>75 0 0 0 0 0 %>75 0 0 0 0 0 %>70 0 0 0 0 0 %>70 0 0 0 0 0 RALEIGH-DURHAM_NC RICHMOND_VA RDU 0520 0521 0522 0523 0524 RIC 0520 0521 0522 0523 0524 MEAN 72 73 66 63 65 MEAN 64 64 62 61 63 %>100 0 0 0 0 0 %>100 0 0 0 0 0 %>95 0 0 0 0 0 %>95 0 0 0 0 0 %>90 0 0 0 0 0 %>90 0 0 0 0 0 %>85 1 3 0 0 0 %>85 0 0 0 0 0 %>80 6 14 0 0 0 %>80 0 1 0 0 0 %>75 30 39 2 1 3 %>75 1 5 0 0 1 %>70 69 69 18 7 18 %>70 11 18 4 2 8 SAVANNAH_GA TALLAHASSEE_FL SAV 0520 0521 0522 0523 0524 TLH 0520 0521 0522 0523 0524 MEAN 86 86 76 70 72 MEAN 84 86 77 72 75 %>100 0 0 0 0 0 %>100 0 0 0 0 0 %>95 0 1 0 0 0 %>95 0 1 0 0 0 %>90 7 15 0 0 0 %>90 1 12 1 0 0 %>85 63 57 3 0 0 %>85 38 55 6 0 1 %>80 99 92 20 1 3 %>80 96 93 26 5 14 %>75 100 100 55 11 23 %>75 100 100 61 27 52 %>70 100 100 87 49 69 %>70 100 100 89 68 88 TAMPA_FL WASHINGTON_DC TPA 0520 0521 0522 0523 0524 DCA 0520 0521 0522 0523 0524 MEAN 88 88 85 80 82 MEAN 60 59 59 59 62 %>100 0 0 0 0 0 %>100 0 0 0 0 0 %>95 0 1 1 0 0 %>95 0 0 0 0 0 %>90 20 24 10 2 4 %>90 0 0 0 0 0 %>85 87 87 48 15 24 %>85 0 0 0 0 0 %>80 100 100 88 51 64 %>80 0 0 0 0 0 %>75 100 100 99 86 92 %>75 0 0 0 0 1 %>70 100 100 100 98 99 %>70 1 1 1 1 7 URL IS WWW.WPC.NCEP.NOAA.GOV $$