Point Forecast Matrices
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
790 FOUS51 KLWX 140537 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 137 AM EDT Sun Jul 14 2024 VAZ054-142000- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 137 AM EDT Sun Jul 14 2024 Date Sun 07/14/24 Mon 07/15/24 Tue 07/16/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 97 79 101 78 101 Temp 79 80 91 95 94 88 85 82 80 82 92 99 98 90 84 81 78 80 92 99 99 92 Dewpt 73 74 72 69 70 72 72 72 72 72 71 70 69 71 72 70 70 69 68 68 68 69 RH 82 82 54 43 46 59 65 72 77 72 51 39 39 54 67 69 76 69 46 37 37 47 Wind dir S W SW SW S S S S S W W SW SW SW SW SW SW SW SW SW SW S Wind spd 2 2 3 4 6 8 6 5 5 5 5 6 9 9 5 5 5 5 6 9 10 10 Clouds SC SC FW SC FW FW FW FW FW FW FW FW SC FW SC SC FW FW FW FW FW SC PoP 12hr 20 5 30 20 10 QPF 12hr 0 0 0.03 0.01 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C S S S Tstms S S C C S S S Heat index 84 99101100 95 91 87 84 87 99107104 96 90 85 83 96105105 97 Max heat 84 101 102 94 87 107 108 95 83 105 106 Date Wed 07/17/24 Thu 07/18/24 Fri 07/19/24 Sat 07/20/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 80 97 77 89 72 88 72 86 Temp 84 81 97 87 81 77 86 82 76 72 85 83 74 74 84 82 Dewpt 70 71 71 74 71 69 67 67 64 62 59 62 63 63 63 64 PWind dir SW SW W NW N NE E SE Wind char GN GN LT LT LT LT LT LT Avg clouds SC FW SC B1 B1 B1 B1 B1 B1 SC SC SC SC B1 B1 B1 PoP 12hr 20 60 60 40 20 20 20 30 Rain shwrs S L L C C C S S S S S C Tstms S C L C C C S S C $$ MDZ013-142000- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 137 AM EDT Sun Jul 14 2024 Date Sun 07/14/24 Mon 07/15/24 Tue 07/16/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 95 76 101 76 101 Temp 76 78 91 94 91 86 82 79 77 79 92 99 98 89 83 78 76 79 93 99 99 91 Dewpt 72 76 74 73 72 74 74 74 72 74 73 72 72 74 73 71 70 71 71 70 71 71 RH 87 94 58 51 54 68 77 85 85 85 54 42 43 61 72 79 82 77 49 39 41 52 Wind dir W W SW W S S S SW SW W W SW SW SW W SW W SW SW SW S S Wind spd 1 1 2 5 5 5 4 3 2 2 5 6 6 5 3 2 2 2 5 8 9 6 Clouds SC FW FW FW FW FW FW FW FW FW FW FW SC SC SC SC FW FW FW FW FW SC PoP 12hr 20 5 30 20 10 QPF 12hr 0 0 0.06 0.06 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C S S S Tstms S S C C S S S Heat index 101103 99 94 88 101109107 98 89 100107108 98 Max heat 103 101 92 109 110 95 107 109 Excess Heat A A A Date Wed 07/17/24 Thu 07/18/24 Fri 07/19/24 Sat 07/20/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 78 97 74 87 69 86 69 86 Temp 81 81 97 86 76 76 85 81 72 71 84 82 71 72 84 81 Dewpt 72 74 72 74 71 70 68 68 64 62 61 62 63 65 64 65 PWind dir SW SW W NW N NE NE SE Wind char LT LT LT LT LT LT LT LT Avg clouds SC FW SC B1 B1 B1 B1 B1 B1 SC SC SC SC B1 B1 B1 PoP 12hr 20 60 60 40 20 10 20 20 Rain shwrs S S L L C C C S S S S S Tstms S S C L C S C S S $$ MDZ011-142000- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 137 AM EDT Sun Jul 14 2024 Date Sun 07/14/24 Mon 07/15/24 Tue 07/16/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 97 80 102 80 102 Temp 80 81 92 95 94 89 85 82 81 82 94 99 98 92 87 82 81 82 94101100 93 Dewpt 72 74 72 71 70 72 73 72 72 72 71 70 70 71 72 70 70 69 69 69 69 69 RH 77 79 52 46 46 57 67 72 74 72 47 39 41 51 61 67 69 65 44 36 37 46 Wind dir NW N SW S S S S S W W W SW SW SW W W W SW SW SW S S Wind spd 1 0 2 5 5 5 3 2 2 2 4 6 6 4 2 2 2 2 5 8 9 6 Clouds SC FW FW FW FW FW FW FW FW FW FW FW FW SC SC SC FW FW FW FW FW SC PoP 12hr 20 5 30 20 20 QPF 12hr 0 0 0.08 0.09 0.04 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C S S S S S Tstms S S C C S S S S S Heat index 84 86100103100 96 92 87 85 87101107105 99 94 86 85 85 99108107 98 Max heat 86 103 103 95 87 107 108 97 85 108 108 Excess Heat A A A Date Wed 07/17/24 Thu 07/18/24 Fri 07/19/24 Sat 07/20/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 82 99 77 90 72 89 72 89 Temp 86 83 98 88 81 77 88 84 77 72 87 85 76 73 87 85 Dewpt 71 71 72 73 71 68 67 66 63 61 59 60 62 63 62 63 PWind dir SW SW W NW N NE NE SE Wind char LT LT LT LT LT LT LT LT Avg clouds SC SC SC B1 B1 B1 B1 B1 B1 SC SC SC SC B1 B1 B1 PoP 12hr 20 60 60 40 20 10 20 20 Rain shwrs S S L L C C C S S S S Tstms S S C L C S C S S $$ WVZ052-142000- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 137 AM EDT Sun Jul 14 2024 Date Sun 07/14/24 Mon 07/15/24 Tue 07/16/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 95 69 98 70 100 Temp 70 75 89 94 95 90 77 73 70 76 89 95 95 87 78 73 70 77 91 98 98 90 Dewpt 68 69 67 63 62 64 65 66 64 67 67 69 68 67 67 68 67 67 67 66 65 64 RH 93 82 48 36 34 42 67 79 81 74 48 43 42 52 69 84 90 71 45 35 34 42 Wind dir N N NW W W NW SW SW SW W W W W W SW SW SW SW W W W SW Wind spd 0 0 2 4 5 3 2 2 2 2 5 8 8 4 2 2 2 2 5 10 10 5 Clouds FW FW FW FW FW FW FW FW FW SC FW FW SC SC SC FW FW SC FW FW FW SC PoP 12hr 20 20 30 20 20 QPF 12hr 0 0 0.01 0.04 0.01 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S C C S S S S S Tstms S S S C C S S S S S Heat index 92 95 96 91 92101100 90 94102101 91 Max heat 95 96 85 101 102 87 102 103 Excess Heat A A A Date Wed 07/17/24 Thu 07/18/24 Fri 07/19/24 Sat 07/20/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 72 94 69 84 62 84 63 84 Temp 75 78 93 83 72 72 82 78 66 67 82 79 65 68 82 79 Dewpt 66 69 69 71 67 65 62 61 59 57 56 57 59 60 60 60 PWind dir SW W NW NW NW N NE SE Wind char LT LT LT LT LT LT LT LT Avg clouds SC FW SC B1 B1 B1 B1 B1 SC SC SC SC SC SC B1 B1 PoP 12hr 20 70 50 30 10 10 10 30 Rain shwrs S C L C C C C C Tstms S S C C C S C S $$ VAZ506-142000- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 137 AM EDT Sun Jul 14 2024 Date Sun 07/14/24 Mon 07/15/24 Tue 07/16/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 96 72 100 73 101 Temp 75 77 90 94 94 90 81 76 74 77 91 98 97 89 81 77 74 79 93100 98 90 Dewpt 72 74 74 71 71 72 72 73 70 72 72 70 71 73 72 71 70 70 70 70 70 70 RH 90 90 60 47 47 56 74 90 87 85 54 41 43 59 74 82 87 74 47 38 41 52 Wind dir SW W W W S S S SW SW W W SW SW SW W SW SW SW SW SW SW S Wind spd 1 1 2 3 4 4 2 2 2 2 4 5 5 5 2 2 2 2 4 5 8 5 Clouds SC FW FW FW FW FW FW FW FW FW FW SC SC SC SC SC FW FW FW FW FW SC PoP 12hr 20 5 30 20 20 QPF 12hr 0 0 0.02 0.03 0.01 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C S S S S S Tstms S S C C S S S S S Heat index 99101101 97 85 99105105 97 85 99108105 96 Max heat 101 102 91 105 107 93 108 109 Excess Heat A A A Date Wed 07/17/24 Thu 07/18/24 Fri 07/19/24 Sat 07/20/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 75 97 72 86 66 85 67 84 Temp 79 79 96 85 75 74 82 80 69 68 83 81 69 70 82 81 Dewpt 70 74 72 74 71 70 68 68 63 62 62 62 63 65 65 65 PWind dir SW SW NW NW NW NE E SE Wind char LT LT LT LT LT LT LT LT Avg clouds SC FW SC B1 B1 B1 B1 B1 B1 SC SC SC SC B1 B1 B1 PoP 12hr 20 60 60 40 20 10 20 30 Rain shwrs S S L L C C C S S S S C Tstms S S C L C S C S C $$ VAZ037-142000- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 137 AM EDT Sun Jul 14 2024 Date Sun 07/14/24 Mon 07/15/24 Tue 07/16/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 97 70 99 71 100 Temp 74 76 91 95 94 88 79 74 71 75 90 96 94 87 79 74 71 75 91 98 98 90 Dewpt 70 70 69 66 66 68 68 67 65 68 68 66 68 69 69 68 67 68 67 66 66 67 RH 87 82 49 39 40 52 69 79 81 79 49 38 43 55 72 82 87 79 45 35 35 47 Wind dir SW SW W SW SW SE SW SW SW W W SW SW SW W W W W SW SW S SW Wind spd 1 1 2 2 4 4 2 2 2 2 3 5 5 4 2 2 2 2 4 6 8 6 Clouds FW FW FW FW FW FW FW FW FW FW FW SC SC FW FW FW FW CL FW FW FW SC PoP 12hr 30 5 30 20 20 QPF 12hr 0 0 0.01 0.01 0.01 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C S S S S Tstms S S C C S S S S Heat index 96 98 97 92 94100 99 91 94102102 93 Max heat 98 100 87 100 100 88 102 103 Excess Heat A A A Date Wed 07/17/24 Thu 07/18/24 Fri 07/19/24 Sat 07/20/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 73 96 71 87 66 85 66 83 Temp 76 77 95 85 75 73 84 79 71 67 82 80 69 68 81 79 Dewpt 67 71 70 72 71 70 68 67 65 62 61 62 63 63 64 64 PWind dir SW SW W N N E NE E Wind char LT LT LT LT LT LT LT LT Avg clouds SC FW SC B1 B1 SC B1 B1 B1 SC SC SC B1 B1 B1 B1 PoP 12hr 10 70 50 50 30 30 30 40 Rain shwrs S L C C C C C S C C C C C Tstms S C C C S C C S C C S C $$ MDZ003-142000- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 137 AM EDT Sun Jul 14 2024 Date Sun 07/14/24 Mon 07/15/24 Tue 07/16/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 96 71 98 72 100 Temp 74 77 90 94 96 91 79 74 72 76 89 95 94 87 79 75 72 77 92 99 99 90 Dewpt 69 72 72 67 65 67 68 69 67 70 71 72 71 71 71 70 70 69 70 70 68 66 RH 84 85 56 41 36 45 69 84 84 82 56 48 47 59 77 84 93 76 49 39 37 45 Wind dir N W W W W W S S S SW W W W W SW SW SW SW SW W W SW Wind spd 1 1 2 5 5 3 2 2 2 2 5 8 8 4 2 2 2 2 5 9 9 5 Clouds FW FW FW FW FW FW SC FW FW SC FW FW SC SC SC SC FW SC SC FW FW FW PoP 12hr 20 10 40 20 20 QPF 12hr 0 0 0.06 0.03 0.01 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C S S S S S Tstms S S C C S S S S S Heat index 97 98 99 94 95104101 93 98107105 93 Max heat 98 99 89 104 105 89 107 108 Excess Heat A A A Date Wed 07/17/24 Thu 07/18/24 Fri 07/19/24 Sat 07/20/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 74 94 70 85 63 85 65 86 Temp 79 78 92 82 73 72 83 78 67 67 83 80 67 69 84 80 Dewpt 67 72 71 71 68 67 64 62 60 59 58 59 60 61 62 63 PWind dir SW W NW NW N N NE SE Wind char LT LT LT LT LT LT LT LT Avg clouds SC FW SC B1 B1 B1 B1 B1 SC SC SC SC SC SC B1 B1 PoP 12hr 20 60 40 30 10 10 10 20 Rain shwrs S C L C S C C S Tstms S S C C S S C S $$ MDZ017-142000- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 137 AM EDT Sun Jul 14 2024 Date Sun 07/14/24 Mon 07/15/24 Tue 07/16/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 93 77 98 77 100 Temp 77 79 88 91 90 84 81 80 78 81 90 96 96 87 83 79 77 81 92 98 98 92 Dewpt 75 75 75 75 75 75 74 74 73 75 75 74 76 74 73 72 71 71 72 73 74 74 RH 94 88 66 60 62 74 79 82 85 82 62 49 53 65 72 79 82 72 52 45 47 56 Wind dir NW W SE SE S S S S SW W SW S S S SW SW SW SW SW S S S Wind spd 2 2 2 5 6 6 6 5 5 5 4 5 8 6 5 5 5 5 5 8 10 9 Clouds FW FW FW FW FW FW FW FW FW FW FW FW FW FW FW FW FW CL CL CL CL FW PoP 12hr 20 5 20 20 10 QPF 12hr 0.03 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S S S Tstms S S S S S S Heat index 98102101 92 86 84 87101107110 95 89 85100109110102 Max heat 102 103 89 87 107 110 94 85 109 110 Excess Heat A A A Date Wed 07/17/24 Thu 07/18/24 Fri 07/19/24 Sat 07/20/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 81 97 76 88 73 85 72 85 Temp 85 83 96 87 79 79 86 81 75 75 84 82 74 76 83 81 Dewpt 75 74 76 76 75 72 72 71 69 67 65 64 67 67 65 68 PWind dir SW SW SW NW N NE E E Wind char GN GN LT LT LT LT LT LT Avg clouds FW FW FW SC B1 B1 B1 B1 B1 B1 SC SC B1 B1 B1 B1 PoP 12hr 10 50 70 60 40 30 30 40 Rain shwrs C L C C L C S S C C C C C Tstms C C C C C C S S S S C $$ WVZ502-142000- Petersburg WV 38.99N 79.15W Elev. 963 ft 137 AM EDT Sun Jul 14 2024 Date Sun 07/14/24 Mon 07/15/24 Tue 07/16/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 97 67 98 68 100 Temp 68 73 90 95 97 89 76 71 68 73 90 96 96 87 77 71 68 74 92 98 98 88 Dewpt 64 66 66 63 61 64 63 61 61 66 68 68 67 69 69 67 65 67 64 63 64 66 RH 87 79 45 35 31 44 64 71 78 79 49 40 39 55 76 87 90 79 40 32 33 48 Wind dir S SW W W W W SW S SW SW W W W W SW SW SW SW W W W SW Wind spd 2 2 2 5 5 3 2 2 2 2 4 6 6 3 3 2 2 2 5 6 8 5 Clouds FW FW FW FW FW FW FW FW SC FW SC FW FW SC FW FW FW FW FW FW SC SC PoP 12hr 30 10 40 20 20 QPF 12hr 0 0 0.01 0.02 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S S C C S S S S C Tstms S S S C C S S S S C Heat index 93 96 98 90 94101100 91 94100101 90 Max heat 96 98 84 101 102 88 100 102 Date Wed 07/17/24 Thu 07/18/24 Fri 07/19/24 Sat 07/20/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 70 94 66 84 58 85 62 85 Temp 74 76 92 80 69 68 81 76 62 63 83 78 64 66 83 78 Dewpt 67 69 68 70 68 66 63 61 59 58 59 60 60 60 62 63 PWind dir SW W W NW NW NE S SE Wind char LT LT LT LT LT LT LT LT Avg clouds SC SC B1 B1 B1 B1 B1 B1 SC SC SC SC B1 SC B1 B1 PoP 12hr 30 70 50 40 20 20 20 40 Rain shwrs C C C L C C C C S S S C C Tstms C S S C C S S C S S C $$ MDZ014-142000- Annapolis MD 38.99N 76.49W Elev. 7 ft 137 AM EDT Sun Jul 14 2024 Date Sun 07/14/24 Mon 07/15/24 Tue 07/16/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 92 78 98 78 98 Temp 78 80 87 90 89 85 82 81 79 81 90 96 95 88 83 80 78 81 91 96 96 91 Dewpt 74 76 76 75 74 75 76 75 74 75 75 75 74 74 75 73 73 71 72 73 73 72 RH 88 88 70 62 61 72 82 82 85 82 62 51 51 63 77 79 85 72 54 48 48 54 Wind dir W N S S S S S S SW W SW SW SW SW SW SW SW SW SW S S S Wind spd 1 0 3 8 9 8 6 5 4 3 5 9 9 6 4 3 3 3 6 10 10 9 Clouds FW FW FW FW FW FW FW FW FW FW FW FW FW SC SC FW FW FW FW FW FW FW PoP 12hr 20 5 20 20 10 QPF 12hr 0.03 0 0.06 0.04 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S S S S Tstms S S S S S S S Heat index 86 98101 98 94 89 87 87101108106 97 90 84 85 99106106 99 Max heat 86 101 102 93 87 108 110 94 85 106 107 Excess Heat A A A Date Wed 07/17/24 Thu 07/18/24 Fri 07/19/24 Sat 07/20/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 80 95 76 86 72 85 72 85 Temp 84 83 94 86 79 78 84 82 75 74 83 82 74 74 83 82 Dewpt 72 74 75 76 73 72 71 71 67 65 64 65 66 66 66 67 PWind dir SW SW W N N NE E SE Wind char LT GN LT LT LT LT LT LT Avg clouds SC FW SC B1 B1 B1 B1 B1 B1 SC SC SC SC B1 B1 B1 PoP 12hr 20 60 70 50 30 20 20 30 Rain shwrs S S L L C C C C S S S S C Tstms S S C L C C C C S $$