


Heat Index Forecast Tables
Issued by NWS
Issued by NWS
586 FMUS23 KWNH 181609 PRBEHI DAYS 3--7 HEAT INDEX FORECAST TABLES NWS WEATHER PREDICTION CENTER COLLEGE PARK MD 1607 UTC FRI APR 18 2025 MEAN HEAT INDEX (DEG F) AND MEAN HI PROB (%) FRCSTS AT EASTERN US CITIES - DAYS 3 TO 7 FROM FRI APR 18 2025 AKRON-CANTON_OH ALBANY_NY CAK 0421 0422 0423 0424 0425 ALB 0421 0422 0423 0424 0425 MEAN 63 55 59 62 64 MEAN 47 56 53 57 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 2 %>80 0 0 0 0 0 %>75 1 0 0 1 7 %>75 0 0 0 0 0 %>70 9 0 2 8 21 %>70 0 1 0 2 3 ASHEVILLE_NC ATLANTA_GA AVL 0421 0422 0423 0424 0425 ATL 0421 0422 0423 0424 0425 MEAN 67 65 65 64 67 MEAN 73 72 73 74 75 %>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 1 %>80 0 0 0 0 0 %>80 5 2 2 7 12 %>75 3 1 0 0 4 %>75 33 21 26 41 52 %>70 22 8 8 7 24 %>70 78 70 80 85 90 BALTIMORE_MD BIRMINGHAM_AL BWI 0421 0422 0423 0424 0425 BHM 0421 0422 0423 0424 0425 MEAN 61 68 63 64 65 MEAN 73 71 72 74 75 %>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 1 %>80 3 0 1 5 9 %>75 0 3 0 1 5 %>75 27 8 21 36 50 %>70 4 32 6 9 22 %>70 74 58 76 83 91 BOSTON_MA BUFFALO_NY BOS 0421 0422 0423 0424 0425 BUF 0421 0422 0423 0424 0425 MEAN 48 55 55 55 55 MEAN 54 48 51 56 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 1 %>70 0 2 0 1 1 %>70 0 0 0 1 4 CHARLESTON_SC CHARLESTON_WV CHS 0421 0422 0423 0424 0425 CRW 0421 0422 0423 0424 0425 MEAN 74 77 77 76 76 MEAN 73 65 65 69 71 %>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 1 %>80 0 10 15 11 11 %>80 5 0 0 2 8 %>75 26 74 71 60 62 %>75 31 1 1 12 26 %>70 96 100 99 97 98 %>70 74 11 11 42 56 CHARLOTTE_NC CHICAGO_IL CLT 0421 0422 0423 0424 0425 ORD 0421 0422 0423 0424 0425 MEAN 72 73 72 72 74 MEAN 54 52 60 58 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 0 0 0 0 0 %>85 0 0 0 0 0 %>80 1 4 2 2 8 %>80 0 0 0 0 0 %>75 22 34 25 23 40 %>75 0 0 1 2 2 %>70 76 82 73 73 83 %>70 1 0 7 7 7 CINCINNATI_OH CLEVELAND_OH LUK 0421 0422 0423 0424 0425 CLE 0421 0422 0423 0424 0425 MEAN 68 60 64 66 68 MEAN 60 53 57 58 60 %>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 3 %>80 0 0 0 0 1 %>75 5 0 0 4 14 %>75 0 0 0 1 4 %>70 35 1 6 22 37 %>70 3 0 2 4 11 COLUMBIA_SC COLUMBUS_OH CAE 0421 0422 0423 0424 0425 TZR 0421 0422 0423 0424 0425 MEAN 74 75 76 75 76 MEAN 67 58 62 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 1 1 1 %>85 0 0 0 0 1 %>80 2 8 12 11 11 %>80 1 0 0 0 4 %>75 35 54 59 54 57 %>75 5 0 0 3 13 %>70 90 95 95 93 94 %>70 26 1 5 15 33 DAYTON_OH DETROIT_MI MGY 0421 0422 0423 0424 0425 DET 0421 0422 0423 0424 0425 MEAN 68 59 63 65 67 MEAN 58 52 57 59 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 0 0 0 0 1 %>85 0 0 0 0 0 %>80 0 0 0 0 4 %>80 0 0 0 0 0 %>75 5 0 0 4 14 %>75 0 0 0 1 2 %>70 30 1 6 19 35 %>70 2 0 3 5 7 EVANSVILLE_IN GRAND_RAPIDS_MI EVV 0421 0422 0423 0424 0425 GRR 0421 0422 0423 0424 0425 MEAN 67 62 66 69 70 MEAN 55 48 57 59 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 0 0 0 0 0 %>85 0 0 0 0 0 %>80 0 0 0 1 2 %>80 0 0 0 0 1 %>75 2 0 1 10 15 %>75 0 0 0 1 3 %>70 23 3 14 40 47 %>70 1 0 2 5 11 GREENSBORO_NC HUNTSVILLE_AL GSO 0421 0422 0423 0424 0425 HSV 0421 0422 0423 0424 0425 MEAN 72 72 69 69 72 MEAN 73 70 72 73 75 %>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 2 %>80 1 3 0 0 4 %>80 10 1 3 6 13 %>75 18 25 6 7 24 %>75 37 11 23 31 46 %>70 67 70 37 43 65 %>70 73 51 67 72 82 INDIANAPOLIS_IN KNOXVILLE_TN IND 0421 0422 0423 0424 0425 TYS 0421 0422 0423 0424 0425 MEAN 65 59 64 66 67 MEAN 72 68 70 71 72 %>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 1 %>80 0 0 0 1 3 %>80 4 0 1 3 7 %>75 1 0 1 6 12 %>75 24 5 13 19 30 %>70 11 1 9 22 33 %>70 64 35 47 54 68 LEXINGTON_KY LOUISVILLE_KY LEX 0421 0422 0423 0424 0425 SDF 0421 0422 0423 0424 0425 MEAN 69 61 64 67 69 MEAN 69 62 65 68 69 %>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 2 %>80 0 0 0 1 3 %>75 7 0 0 4 13 %>75 5 0 1 8 15 %>70 40 1 5 25 41 %>70 40 2 10 32 43 MEMPHIS_TN MIAMI_FL MEM 0421 0422 0423 0424 0425 MIA 0421 0422 0423 0424 0425 MEAN 71 69 72 73 74 MEAN 79 79 80 80 81 %>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 1 1 %>85 0 0 1 2 4 %>80 1 1 3 8 11 %>80 20 35 50 52 60 %>75 13 8 24 36 44 %>75 97 98 99 99 99 %>70 56 41 68 77 82 %>70 100 100 100 100 100 MILWAUKEE_WI MOBILE_AL MKE 0421 0422 0423 0424 0425 MOB 0421 0422 0423 0424 0425 MEAN 48 45 51 50 50 MEAN 76 76 76 76 77 %>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 7 9 8 9 13 %>75 0 0 0 0 0 %>75 60 60 60 63 73 %>70 0 0 0 0 0 %>70 98 97 97 98 99 NASHVILLE_TN NEW_YORK_CITY_NY BNA 0421 0422 0423 0424 0425 NYC 0421 0422 0423 0424 0425 MEAN 72 68 70 72 74 MEAN 49 62 59 59 60 %>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 1 2 %>85 0 0 0 0 0 %>80 5 0 1 6 12 %>80 0 0 0 0 0 %>75 28 4 11 27 41 %>75 0 0 0 0 1 %>70 69 28 48 63 76 %>70 0 4 1 3 6 NORFOLK_VA ORLANDO_FL ORF 0421 0422 0423 0424 0425 ORL 0421 0422 0423 0424 0425 MEAN 67 71 65 64 67 MEAN 78 79 80 79 79 %>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 2 4 1 1 %>80 0 2 0 0 1 %>80 14 38 53 34 34 %>75 5 18 1 1 6 %>75 91 94 98 96 92 %>70 24 59 12 10 28 %>70 100 100 100 100 100 PHILADELPHIA_PA PITTSBURGH_PA PHL 0421 0422 0423 0424 0425 PIT 0421 0422 0423 0424 0425 MEAN 55 66 62 63 64 MEAN 66 59 60 64 65 %>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 1 %>80 0 0 0 0 2 %>75 0 1 0 1 4 %>75 2 0 0 2 9 %>70 0 14 5 7 16 %>70 19 2 2 12 26 PORTLAND_ME PROVIDENCE_RI PWM 0421 0422 0423 0424 0425 PVD 0421 0422 0423 0424 0425 MEAN 43 46 47 48 49 MEAN 47 55 55 55 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 0 0 %>70 0 1 0 0 1 RALEIGH-DURHAM_NC RICHMOND_VA RDU 0421 0422 0423 0424 0425 RIC 0421 0422 0423 0424 0425 MEAN 73 75 71 71 73 MEAN 69 73 68 67 70 %>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 1 %>80 1 8 2 1 7 %>80 1 2 1 1 4 %>75 22 47 18 16 35 %>75 10 30 8 7 20 %>70 83 90 62 61 76 %>70 43 82 33 30 50 SAVANNAH_GA TALLAHASSEE_FL SAV 0421 0422 0423 0424 0425 TLH 0421 0422 0423 0424 0425 MEAN 75 77 78 77 77 MEAN 74 75 76 77 77 %>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 1 11 19 15 14 %>80 0 3 7 12 13 %>75 45 77 86 77 72 %>75 31 53 68 76 75 %>70 99 100 100 99 99 %>70 95 97 99 100 99 TAMPA_FL WASHINGTON_DC TPA 0421 0422 0423 0424 0425 DCA 0421 0422 0423 0424 0425 MEAN 79 80 81 81 81 MEAN 64 71 65 66 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 0 0 0 0 0 %>85 2 4 8 9 12 %>85 0 0 0 0 0 %>80 40 46 60 61 63 %>80 0 1 0 0 3 %>75 93 95 97 97 97 %>75 3 12 2 3 12 %>70 100 100 100 100 100 %>70 15 57 14 22 36 URL IS WWW.WPC.NCEP.NOAA.GOV $$