Heat Index Forecast Tables
Issued by NWS
Issued by NWS
987
FMUS23 KWNH 141818
PRBEHL
DAYS 3--7 HEAT INDEX FORECAST TABLES
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
1816 UTC FRI AUG 14 2026
MINIMUM HEAT INDEX (DEG F) AND MINIMUM HI PROB (%) FRCSTS
AT EASTERN US CITIES - DAYS 3 TO 7 FROM FRI AUG 14 2026
AKRON-CANTON_OH ALBANY_NY
CAK 0817 0818 0819 0820 0821 ALB 0817 0818 0819 0820 0821
MIN 69 59 61 65 59 MIN 64 59 58 64 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 1 0 %>80 0 0 0 0 0
%>75 4 0 0 5 1 %>75 1 0 0 2 0
%>70 39 3 4 19 6 %>70 10 2 0 14 3
ASHEVILLE_NC ATLANTA_GA
AVL 0817 0818 0819 0820 0821 ATL 0817 0818 0819 0820 0821
MIN 69 69 67 68 67 MIN 78 77 76 76 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 3 3 1 2 1
%>80 0 0 0 0 0 %>80 26 27 15 19 12
%>75 5 5 3 3 4 %>75 75 73 60 63 51
%>70 42 41 23 28 24 %>70 97 97 93 94 89
BALTIMORE_MD BIRMINGHAM_AL
BWI 0817 0818 0819 0820 0821 BHM 0817 0818 0819 0820 0821
MIN 75 71 70 74 70 MIN 78 77 76 76 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 1 0 0 0
%>85 2 0 0 2 1 %>85 4 8 3 4 2
%>80 15 1 1 14 7 %>80 28 29 19 21 14
%>75 52 18 15 44 25 %>75 76 64 54 58 49
%>70 86 65 51 77 53 %>70 97 89 86 88 85
BOSTON_MA BUFFALO_NY
BOS 0817 0818 0819 0820 0821 BUF 0817 0818 0819 0820 0821
MIN 66 64 63 69 63 MIN 65 59 63 62 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 0 0 0 0 0 %>80 0 0 0 0 0
%>75 2 1 0 5 3 %>75 0 0 0 2 0
%>70 19 10 7 36 14 %>70 10 2 5 11 2
CHARLESTON_SC CHARLESTON_WV
CHS 0817 0818 0819 0820 0821 CRW 0817 0818 0819 0820 0821
MIN 84 86 84 83 82 MIN 74 68 66 70 67
%>100 1 0 1 1 1 %>100 0 0 0 0 0
%>95 5 5 7 6 4 %>95 0 0 0 0 0
%>90 21 24 23 21 14 %>90 0 0 0 0 0
%>85 48 57 46 44 34 %>85 0 0 0 0 0
%>80 74 83 69 68 58 %>80 1 0 0 1 2
%>75 90 96 86 85 80 %>75 30 3 0 13 9
%>70 97 99 95 95 93 %>70 89 31 11 52 29
CHARLOTTE_NC CHICAGO_IL
CLT 0817 0818 0819 0820 0821 ORD 0817 0818 0819 0820 0821
MIN 77 76 74 75 74 MIN 68 65 69 64 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 1 0 0 0 0 %>90 0 0 0 0 0
%>85 9 4 1 2 2 %>85 0 0 0 0 0
%>80 31 22 11 16 13 %>80 0 0 0 0 0
%>75 63 59 46 51 41 %>75 3 1 5 4 3
%>70 88 89 84 85 76 %>70 28 13 36 17 13
CINCINNATI_OH CLEVELAND_OH
LUK 0817 0818 0819 0820 0821 CLE 0817 0818 0819 0820 0821
MIN 73 66 66 70 65 MIN 70 63 65 66 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 0 0 0 0 0
%>80 1 0 0 3 1 %>80 0 0 0 1 0
%>75 28 2 4 16 7 %>75 5 2 3 6 3
%>70 85 17 22 47 22 %>70 48 15 20 26 14
COLUMBIA_SC COLUMBUS_OH
CAE 0817 0818 0819 0820 0821 TZR 0817 0818 0819 0820 0821
MIN 79 79 77 77 76 MIN 71 63 63 67 62
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 1 1 0 0 0 %>95 0 0 0 0 0
%>90 6 4 2 2 2 %>90 0 0 0 0 0
%>85 20 17 11 10 9 %>85 0 0 0 0 0
%>80 45 43 33 32 29 %>80 0 0 0 2 1
%>75 72 73 63 64 59 %>75 12 1 1 9 4
%>70 90 92 87 88 84 %>70 62 7 9 32 13
DAYTON_OH DETROIT_MI
MGY 0817 0818 0819 0820 0821 DET 0817 0818 0819 0820 0821
MIN 72 63 65 68 63 MIN 66 63 67 64 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 1 0 0 2 1 %>80 0 0 0 0 0
%>75 17 1 2 11 5 %>75 1 0 2 3 1
%>70 71 8 15 36 17 %>70 16 5 27 14 8
EVANSVILLE_IN GRAND_RAPIDS_MI
EVV 0817 0818 0819 0820 0821 GRR 0817 0818 0819 0820 0821
MIN 76 69 71 72 68 MIN 60 58 64 57 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 1 0 %>90 0 0 0 0 0
%>85 3 0 1 4 2 %>85 0 0 0 0 0
%>80 18 2 7 15 7 %>80 0 0 0 0 0
%>75 54 13 25 36 19 %>75 0 0 1 1 1
%>70 87 46 57 63 40 %>70 2 0 9 4 3
GREENSBORO_NC HUNTSVILLE_AL
GSO 0817 0818 0819 0820 0821 HSV 0817 0818 0819 0820 0821
MIN 76 74 72 74 72 MIN 78 77 75 76 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 0 0 0 0 0
%>85 4 1 0 1 1 %>85 2 2 1 3 2
%>80 21 9 3 8 6 %>80 31 21 13 22 13
%>75 57 39 24 37 26 %>75 85 68 49 61 43
%>70 87 78 68 78 61 %>70 99 96 87 91 78
INDIANAPOLIS_IN KNOXVILLE_TN
IND 0817 0818 0819 0820 0821 TYS 0817 0818 0819 0820 0821
MIN 71 64 66 67 63 MIN 77 75 72 74 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 0
%>80 1 0 0 2 1 %>80 6 2 1 3 3
%>75 16 1 4 11 5 %>75 76 43 17 35 23
%>70 66 9 23 33 16 %>70 100 95 73 88 63
LEXINGTON_KY LOUISVILLE_KY
LEX 0817 0818 0819 0820 0821 SDF 0817 0818 0819 0820 0821
MIN 74 68 67 71 67 MIN 76 70 70 73 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 1 0 0 1 0 %>85 1 0 0 2 1
%>80 10 1 1 7 3 %>80 14 1 2 11 4
%>75 42 7 7 25 12 %>75 62 11 16 35 16
%>70 82 35 31 57 31 %>70 94 48 49 68 40
MEMPHIS_TN MIAMI_FL
MEM 0817 0818 0819 0820 0821 MIA 0817 0818 0819 0820 0821
MIN 83 78 78 79 76 MIN 85 85 86 88 87
%>100 0 0 0 0 0 %>100 0 0 0 1 0
%>95 0 0 1 1 0 %>95 2 4 5 9 5
%>90 3 3 4 4 2 %>90 21 24 28 37 33
%>85 32 13 15 17 10 %>85 54 54 60 72 66
%>80 82 39 40 44 28 %>80 77 78 83 92 90
%>75 98 71 69 74 54 %>75 93 93 96 98 98
%>70 100 92 90 93 79 %>70 99 98 99 100 100
MILWAUKEE_WI MOBILE_AL
MKE 0817 0818 0819 0820 0821 MOB 0817 0818 0819 0820 0821
MIN 66 64 67 62 62 MIN 80 80 79 79 78
%>100 0 0 0 0 0 %>100 1 1 1 0 0
%>95 0 0 0 0 0 %>95 3 4 2 2 2
%>90 0 0 0 0 0 %>90 10 12 9 7 7
%>85 0 0 0 0 0 %>85 26 29 23 20 20
%>80 0 0 0 0 0 %>80 49 51 45 44 42
%>75 1 0 2 1 1 %>75 72 73 69 70 67
%>70 13 10 25 9 8 %>70 88 88 87 89 86
NASHVILLE_TN NEW_YORK_CITY_NY
BNA 0817 0818 0819 0820 0821 NYC 0817 0818 0819 0820 0821
MIN 78 75 73 76 72 MIN 72 69 69 73 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 1 0 %>90 0 0 0 0 0
%>85 6 1 1 5 2 %>85 0 0 0 0 0
%>80 33 13 10 22 10 %>80 1 0 1 6 2
%>75 75 46 37 55 32 %>75 20 7 11 32 12
%>70 96 83 75 84 63 %>70 75 45 42 72 41
NORFOLK_VA ORLANDO_FL
ORF 0817 0818 0819 0820 0821 ORL 0817 0818 0819 0820 0821
MIN 80 80 77 78 78 MIN 81 81 82 81 81
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 1 0 0 0 %>95 1 1 1 1 1
%>90 4 5 1 1 3 %>90 5 6 7 8 5
%>85 20 21 7 10 13 %>85 22 25 28 28 21
%>80 52 50 28 36 36 %>80 55 58 61 60 55
%>75 81 78 62 71 66 %>75 84 85 87 85 84
%>70 95 94 88 92 88 %>70 97 96 97 97 97
PHILADELPHIA_PA PITTSBURGH_PA
PHL 0817 0818 0819 0820 0821 PIT 0817 0818 0819 0820 0821
MIN 73 69 68 73 69 MIN 70 60 61 66 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 1 1 %>85 0 0 0 0 0
%>80 4 1 0 9 4 %>80 0 0 0 1 0
%>75 30 9 5 33 17 %>75 6 0 0 5 2
%>70 75 42 31 69 42 %>70 56 4 2 25 9
PORTLAND_ME PROVIDENCE_RI
PWM 0817 0818 0819 0820 0821 PVD 0817 0818 0819 0820 0821
MIN 61 59 60 64 58 MIN 66 64 63 68 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 0 0 0 0 0 %>85 0 0 0 0 0
%>80 0 0 0 0 0 %>80 0 0 0 0 1
%>75 1 0 0 2 1 %>75 3 3 0 7 4
%>70 6 2 2 11 5 %>70 23 14 7 36 15
RALEIGH-DURHAM_NC RICHMOND_VA
RDU 0817 0818 0819 0820 0821 RIC 0817 0818 0819 0820 0821
MIN 78 76 74 76 74 MIN 76 73 71 74 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 2 1 0 0 0 %>90 1 0 0 0 0
%>85 13 6 1 4 3 %>85 6 0 0 2 2
%>80 37 25 12 21 15 %>80 25 6 3 13 10
%>75 69 60 46 56 44 %>75 57 32 18 42 30
%>70 91 88 82 86 76 %>70 85 73 55 77 59
SAVANNAH_GA TALLAHASSEE_FL
SAV 0817 0818 0819 0820 0821 TLH 0817 0818 0819 0820 0821
MIN 82 84 81 81 80 MIN 79 80 79 79 78
%>100 0 0 0 1 0 %>100 0 1 1 0 0
%>95 2 3 3 3 2 %>95 1 3 3 2 1
%>90 11 15 12 12 8 %>90 5 10 9 7 5
%>85 34 42 32 30 23 %>85 19 27 23 20 17
%>80 63 72 57 55 49 %>80 45 52 46 45 39
%>75 85 90 79 78 75 %>75 73 76 70 71 67
%>70 96 98 92 92 92 %>70 91 91 88 89 87
TAMPA_FL WASHINGTON_DC
TPA 0817 0818 0819 0820 0821 DCA 0817 0818 0819 0820 0821
MIN 84 86 86 87 85 MIN 75 72 70 74 71
%>100 1 1 3 2 1 %>100 0 0 0 0 0
%>95 6 7 12 12 6 %>95 0 0 0 0 0
%>90 22 29 34 35 24 %>90 0 0 0 0 0
%>85 47 60 60 63 53 %>85 3 0 0 2 2
%>80 70 81 80 82 77 %>80 18 1 1 14 8
%>75 86 93 91 92 90 %>75 53 20 12 43 26
%>70 94 98 97 97 96 %>70 86 70 47 77 54
URL IS WWW.WPC.NCEP.NOAA.GOV
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