Point Forecast Matrices
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
972 FOUS51 KLWX 202337 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 737 PM EDT Thu Jun 20 2024 VAZ054-210800- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 737 PM EDT Thu Jun 20 2024 Date 06/20/24 Fri 06/21/24 Sat 06/22/24 Sun EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 72 96 77 100 81 Temp 86 79 76 72 76 87 94 95 92 84 79 77 83 91 99100 92 86 83 81 85 Dewpt 62 64 64 64 64 65 64 63 66 67 67 67 67 68 68 68 69 70 69 69 70 RH 45 60 66 76 66 48 37 35 43 57 67 71 59 47 37 36 47 59 63 67 61 Wind dir S S S S S S S S S S S S SW SW S S S S S S SW Wind spd 10 8 5 5 6 6 6 9 10 9 6 6 6 5 6 8 9 8 8 9 9 Clouds FW FW FW FW FW FW FW FW FW FW FW FW CL FW FW SC SC SC SC FW FW PoP 12hr 0 0 5 30 10 QPF 12hr 0 0 0 0 0.01 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C Tstms C C Heat index 86 89 96 96 95 87 86 95105106 97 91 87 84 90 Max heat 89 86 96 96 90 86 105 106 94 90 Date 06/23 Mon 06/24/24 Tue 06/25/24 Wed 06/26/24 Thu 06/27/24 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 101 79 95 73 95 75 98 76 89 Temp 101 92 82 82 95 88 77 78 93 88 77 80 97 90 80 80 88 83 Dewpt 68 70 71 72 67 65 63 62 59 62 65 66 65 67 67 66 62 60 PWind dir SW SW W NW W S SW W NW Wind char GN GN GN LT LT LT LT LT LT Avg clouds SC B2 B2 B1 SC SC FW FW FW FW FW SC SC B1 B1 B1 SC SC PoP 12hr 30 50 40 10 5 10 20 30 30 Rain shwrs C C C S C S C S S C Tstms C C C S C S C S C $$ MDZ013-210800- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 737 PM EDT Thu Jun 20 2024 Date 06/20/24 Fri 06/21/24 Sat 06/22/24 Sun EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 69 95 73 100 78 Temp 83 76 71 69 74 87 93 94 88 79 74 73 79 91 97100 90 82 79 78 83 Dewpt 63 66 65 64 66 67 65 65 67 68 68 67 69 70 70 69 71 72 71 69 71 RH 51 71 81 84 76 52 40 39 50 69 82 81 72 50 42 37 54 72 77 74 67 Wind dir S S S SW SW S S S S S S S SW S S S S S S S SW Wind spd 5 4 3 2 2 4 5 6 6 5 3 2 2 3 5 5 5 4 3 3 4 Clouds FW FW FW FW FW FW FW FW FW FW SC FW FW FW SC SC SC SC SC SC SC PoP 12hr 0 5 5 30 20 QPF 12hr 0 0 0 0.01 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S S Tstms C C S S Heat index 84 90 95 97 91 97104107 96 87 88 Max heat 87 82 95 97 88 104 107 94 88 Excess Heat A A Date 06/23 Mon 06/24/24 Tue 06/25/24 Wed 06/26/24 Thu 06/27/24 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 101 75 93 69 93 71 97 72 89 Temp 99 89 78 78 93 86 73 74 91 87 73 77 97 88 74 76 88 82 Dewpt 70 71 71 72 69 67 64 63 62 63 66 69 68 69 69 67 64 60 PWind dir SW SW W NW W S SW W NW Wind char GN LT GN LT LT LT LT LT LT Avg clouds SC B2 OV B1 SC SC FW FW FW FW SC SC SC B1 B1 B1 SC SC PoP 12hr 30 60 40 10 5 10 20 30 30 Rain shwrs C L C C C S C S S C Tstms C C C C C S C S S C $$ MDZ011-210800- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 737 PM EDT Thu Jun 20 2024 Date 06/20/24 Fri 06/21/24 Sat 06/22/24 Sun EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 75 97 79 102 82 Temp 86 81 77 75 78 91 95 96 90 85 80 79 84 93 99102 90 87 83 82 87 Dewpt 61 64 64 64 63 65 64 63 66 67 67 67 67 68 67 68 69 71 70 69 69 RH 43 56 64 69 60 42 36 34 45 55 65 67 57 44 36 34 50 59 65 65 55 Wind dir S S S S SW S SE SE S S S S SW S S S S S S S SW Wind spd 5 3 2 2 2 3 6 6 5 4 2 2 2 3 5 5 5 4 3 3 3 Clouds FW FW FW FW FW FW FW FW FW FW SC FW FW FW SC SC SC SC SC SC SC PoP 12hr 0 5 5 30 20 QPF 12hr 0 0 0 0.01 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S S Tstms C C S S Heat index 86 83 93 97 98 93 88 82 87 97104109 95 93 87 85 91 Max heat 89 86 97 98 92 87 104 109 94 91 Excess Heat A A Date 06/23 Mon 06/24/24 Tue 06/25/24 Wed 06/26/24 Thu 06/27/24 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 104 81 96 74 95 76 99 77 92 Temp 103 92 84 83 96 85 77 77 92 87 77 80 98 87 78 80 91 83 Dewpt 68 69 69 69 66 65 62 60 59 61 64 66 66 67 67 64 60 58 PWind dir SW SW W NW W S SW W NW Wind char GN LT GN LT LT LT LT LT LT Avg clouds SC B2 B2 B1 SC FW FW FW FW FW SC SC SC B1 B1 B1 SC SC PoP 12hr 30 60 40 10 5 10 20 40 30 Rain shwrs C L C C C S C S S C Tstms C C C C C S C S S C $$ WVZ052-210800- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 737 PM EDT Thu Jun 20 2024 Date 06/20/24 Fri 06/21/24 Sat 06/22/24 Sun EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 65 94 70 97 72 Temp 85 75 68 65 71 85 92 93 88 78 73 70 76 89 95 97 90 80 76 72 78 Dewpt 64 63 63 62 64 65 64 63 67 67 67 67 69 70 67 67 70 69 69 67 69 RH 50 66 84 90 79 51 40 37 50 69 81 90 79 54 40 38 52 69 79 84 74 Wind dir SE S S N N S S S S S S N N W W SW S S S SW SW Wind spd 4 2 2 0 0 1 2 3 2 2 1 0 0 1 2 3 2 2 2 2 2 Clouds FW FW FW FW FW FW FW FW SC SC FW FW FW FW SC SC SC SC SC SC SC PoP 12hr 0 10 10 30 10 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C Tstms C C Heat index 86 87 94 94 91 94 99101 96 83 Max heat 88 82 94 94 86 99 101 92 Excess Heat A A Date 06/23 Mon 06/24/24 Tue 06/25/24 Wed 06/26/24 Thu 06/27/24 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 97 70 89 63 91 66 94 66 84 Temp 96 89 74 76 89 84 67 71 89 86 68 73 93 88 71 71 82 80 Dewpt 66 65 67 68 62 60 59 60 57 60 61 63 62 64 64 63 58 55 PWind dir SW SW W NW W SW W W NW Wind char LT LT GN LT LT LT LT LT LT Avg clouds SC B1 B2 SC FW FW FW FW FW FW SC SC SC SC B1 SC SC SC PoP 12hr 30 50 20 5 5 10 20 30 20 Rain shwrs C C C S S S C S S S Tstms C C C S S S C S S $$ VAZ506-210800- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 737 PM EDT Thu Jun 20 2024 Date 06/20/24 Fri 06/21/24 Sat 06/22/24 Sun EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 68 95 73 100 75 Temp 85 76 71 69 73 86 93 94 91 81 76 73 79 93 98100 91 82 77 75 81 Dewpt 65 66 65 64 66 67 66 66 68 68 67 66 69 72 70 71 71 71 69 68 72 RH 51 71 81 84 79 53 41 40 47 65 74 79 72 51 41 40 52 69 76 79 74 Wind dir S S S S S S S S S S S S SW SW SW S S S S S SW Wind spd 4 4 3 2 2 2 3 4 4 3 3 2 2 2 3 3 3 3 3 3 4 Clouds FW FW FW FW FW FW SC FW FW FW FW FW FW FW SC SC SC SC SC FW SC PoP 12hr 0 5 5 30 10 QPF 12hr 0 0 0 0 0.01 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C Tstms C C Heat index 87 89 96 97 95 84 101105109 98 86 85 Max heat 89 84 96 97 90 105 109 94 85 Excess Heat A A Date 06/23 Mon 06/24/24 Tue 06/25/24 Wed 06/26/24 Thu 06/27/24 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 101 74 94 68 93 71 98 71 88 Temp 99 89 76 79 94 86 72 73 92 87 72 77 98 88 75 74 88 82 Dewpt 70 70 71 72 68 66 63 63 62 64 65 67 66 69 68 68 64 60 PWind dir SW SW W NW W S SW W NW Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC B2 B2 B1 FW FW FW FW FW FW FW SC SC B1 B1 B1 SC SC PoP 12hr 30 60 30 10 5 10 20 40 30 Rain shwrs C L C S C S C S S C Tstms C C C S C S C S C $$ VAZ037-210800- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 737 PM EDT Thu Jun 20 2024 Date 06/20/24 Fri 06/21/24 Sat 06/22/24 Sun EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 68 96 72 100 75 Temp 85 77 71 68 73 87 94 95 89 80 74 72 78 93 99100 90 82 77 75 81 Dewpt 64 63 63 62 63 65 63 63 66 65 64 64 67 68 67 68 69 68 67 67 69 RH 50 62 76 81 71 48 36 35 47 60 71 76 69 44 36 36 50 63 71 76 67 Wind dir S S S S S S S S S S SW SW SW S S SW SW SW SW SW SW Wind spd 4 2 1 1 1 2 3 4 4 3 2 2 1 2 3 4 3 3 3 4 4 Clouds SC FW FW FW FW FW SC FW FW FW FW FW CL FW SC SC FW SC FW FW FW PoP 12hr 0 5 5 30 5 QPF 12hr 0 0 0 0.05 0.02 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C Tstms C C Heat index 86 89 95 96 92 82 97104106 95 85 84 Max heat 89 83 95 97 87 104 106 91 84 Excess Heat A A Date 06/23 Mon 06/24/24 Tue 06/25/24 Wed 06/26/24 Thu 06/27/24 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 101 75 96 68 95 70 99 71 90 Temp 100 89 78 79 96 86 72 73 92 86 72 76 98 88 73 75 89 82 Dewpt 67 68 67 69 64 63 61 62 59 62 62 64 63 64 64 66 62 61 PWind dir SW SW W NW SW SW SW W N Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC B2 B1 SC FW FW FW FW FW FW FW FW SC B1 B1 B1 SC SC PoP 12hr 20 40 30 10 5 10 20 30 40 Rain shwrs S C S C S C S S C Tstms S C S C S C S C $$ MDZ003-210800- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 737 PM EDT Thu Jun 20 2024 Date 06/20/24 Fri 06/21/24 Sat 06/22/24 Sun EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 67 94 72 99 74 Temp 86 76 71 68 74 87 93 93 90 80 76 72 78 91 97 99 92 81 78 74 80 Dewpt 65 66 64 64 66 68 67 65 69 69 69 68 71 73 69 69 71 71 71 70 72 RH 50 71 79 87 76 53 43 40 50 69 79 87 79 56 40 38 51 72 79 87 77 Wind dir SE S S S S S S SW SE S S S SW W W SW S S S S SW Wind spd 3 3 2 2 1 2 4 4 3 2 2 1 1 2 4 4 2 2 2 2 3 Clouds FW FW FW FW FW FW FW SC SC SC FW FW FW FW SC SC SC SC FW SC SC PoP 12hr 0 20 10 30 10 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C Tstms S S C C Heat index 88 91 97 95 95 83 100103106 99 85 84 Max heat 90 83 97 96 89 103 106 95 84 Excess Heat A A Date 06/23 Mon 06/24/24 Tue 06/25/24 Wed 06/26/24 Thu 06/27/24 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 99 72 90 65 92 68 96 68 85 Temp 97 87 76 78 90 84 69 72 90 87 72 75 95 88 72 72 84 79 Dewpt 68 67 69 70 66 62 61 62 59 63 63 66 65 66 66 66 60 57 PWind dir SW SW W NW W S W NW NW Wind char LT LT GN LT LT LT LT LT LT Avg clouds SC B1 B2 SC FW FW FW FW FW FW SC SC SC SC B1 SC SC SC PoP 12hr 30 40 20 0 5 10 20 30 20 Rain shwrs C C C S S S C S S S Tstms C C C S S S C S S $$ MDZ017-210800- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 737 PM EDT Thu Jun 20 2024 Date 06/20/24 Fri 06/21/24 Sat 06/22/24 Sun EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 70 90 74 98 78 Temp 82 76 72 70 75 85 89 88 83 78 75 74 81 91 94 98 86 81 80 78 84 Dewpt 66 66 66 65 66 67 67 67 69 68 68 68 70 70 70 70 72 71 70 70 72 RH 58 71 81 84 74 55 48 50 63 71 79 82 69 50 46 41 63 72 72 76 67 Wind dir S S S SW SW S SE SE S S S S SW S S S S S S SW SW Wind spd 9 8 5 5 5 5 10 10 10 9 6 5 5 5 9 10 10 10 9 9 10 Clouds FW SC SC FW SC FW FW FW FW CL FW FW FW CL FW FW FW FW SC FW FW PoP 12hr 0 0 0 20 5 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S Tstms S S Heat index 84 88 92 91 87 85 97100105 92 85 83 90 Max heat 85 82 92 93 84 85 100 105 90 90 Date 06/23 Mon 06/24/24 Tue 06/25/24 Wed 06/26/24 Thu 06/27/24 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 101 77 93 72 91 73 96 74 89 Temp 97 87 79 83 93 83 73 77 90 84 74 80 95 87 76 80 88 82 Dewpt 72 72 71 74 72 71 67 66 64 67 67 70 69 71 69 70 68 66 PWind dir S SW SW NW SW S S SW N Wind char GN GN GN LT LT LT GN LT LT Avg clouds FW B1 B2 B2 SC SC SC FW FW FW FW FW FW SC B1 B1 SC B1 PoP 12hr 20 50 50 20 5 10 20 30 40 Rain shwrs S C C C C S S C S S C Tstms S C C C C S S C S S C $$ WVZ502-210800- Petersburg WV 38.99N 79.15W Elev. 963 ft 737 PM EDT Thu Jun 20 2024 Date 06/20/24 Fri 06/21/24 Sat 06/22/24 Sun EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 66 94 68 97 70 Temp 85 73 69 66 71 86 92 92 85 76 71 68 74 90 96 97 87 78 73 70 76 Dewpt 67 66 64 62 66 67 67 67 72 70 68 66 69 70 68 68 71 70 68 66 69 RH 55 79 84 87 84 53 44 44 65 82 90 93 84 52 40 39 59 76 84 87 79 Wind dir SE SE S S SW E NW W N W SW SW SW W W W SW SW SW SW SW Wind spd 2 2 2 2 1 1 2 2 2 2 2 1 1 1 2 2 2 2 2 2 2 Clouds SC FW FW SC FW FW SC SC SC SC FW FW FW FW SC SC SC SC FW SC SC PoP 12hr 0 30 10 20 5 QPF 12hr 0 0.01 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S S Tstms C C S S Heat index 88 89 96 96 91 96101102 93 Max heat 90 82 96 97 85 101 102 89 Excess Heat A A Date 06/23 Mon 06/24/24 Tue 06/25/24 Wed 06/26/24 Thu 06/27/24 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 94 69 89 61 93 65 94 65 85 Temp 93 85 72 73 88 81 66 69 91 83 67 71 93 84 69 69 84 77 Dewpt 67 67 67 68 65 62 61 61 60 64 60 63 66 67 66 66 62 61 PWind dir SW SW W W W SW W W NW Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC B2 B1 SC SC FW FW FW FW FW SC SC SC B1 B1 B1 SC SC PoP 12hr 30 50 20 5 10 10 30 40 30 Rain shwrs C C C S S C C S C C Tstms C C C S S C C S S $$ MDZ014-210800- Annapolis MD 38.99N 76.49W Elev. 7 ft 737 PM EDT Thu Jun 20 2024 Date 06/20/24 Fri 06/21/24 Sat 06/22/24 Sun EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 72 89 75 95 79 Temp 81 77 73 72 76 83 87 87 83 79 76 75 80 89 92 95 87 82 80 79 84 Dewpt 67 68 67 66 66 68 69 67 69 70 70 68 69 71 72 71 72 73 72 70 72 RH 63 74 81 81 71 61 55 52 63 74 82 79 69 56 52 46 61 74 77 74 67 Wind dir S S S S SW S S S S S S S SW S S S S S S S SW Wind spd 9 6 5 4 4 6 10 10 10 8 5 4 3 5 9 10 9 8 5 5 5 Clouds FW FW FW FW FW FW FW FW FW FW FW FW FW FW FW SC SC SC SC FW FW PoP 12hr 0 0 5 20 20 QPF 12hr 0 0 0 0.01 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S Tstms S S S S Heat index 83 86 91 90 87 83 95100103 94 87 84 90 Max heat 84 82 91 92 85 83 100 103 92 90 Excess Heat A A Date 06/23 Mon 06/24/24 Tue 06/25/24 Wed 06/26/24 Thu 06/27/24 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 98 78 91 73 89 74 94 75 87 Temp 96 87 79 82 90 84 75 77 87 83 75 78 93 87 78 78 86 83 Dewpt 73 73 72 72 70 69 66 64 64 66 67 68 70 70 69 67 65 63 PWind dir S SW W NW SW S S SW N Wind char GN LT GN LT LT LT GN LT LT Avg clouds SC B1 B2 B1 SC SC FW FW FW FW FW SC SC SC B1 B1 SC SC PoP 12hr 30 60 40 10 5 10 20 30 30 Rain shwrs C L C C C S C S S C Tstms C C C C C S C S S C $$