Point Forecast Matrices
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
786 FOUS51 KLWX 211439 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 1039 AM EDT Sun Jul 21 2024 VAZ054-212000- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 1039 AM EDT Sun Jul 21 2024 Date Sun 07/21/24 Mon 07/22/24 Tue 07/23/24 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 76 87 75 92 Temp 84 90 91 86 81 80 78 78 82 83 83 79 77 77 76 76 84 88 91 86 Dewpt 69 66 64 67 69 71 71 71 71 71 71 71 72 71 70 71 70 69 68 70 RH 61 45 41 53 67 74 79 79 69 67 67 77 85 82 82 85 63 54 47 59 Wind dir N SW SE S S S SE SE SE SE SE SE S S SW W W W SW S Wind spd 3 4 6 9 8 5 5 5 9 11 11 9 8 6 8 8 8 8 9 8 Clouds FW SC B1 B1 B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 B1 B1 PoP 12hr 10 20 70 60 40 QPF 12hr 0 0 0.94 0.12 0.01 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C L L L L S S C C C Tstms S S C C L L L C S S C C C Heat index 88 93 93 89 84 83 86 88 88 88 92 95 91 Max heat 93 94 87 88 88 92 95 Date Wed 07/24/24 Thu 07/25/24 Fri 07/26/24 Sat 07/27/24 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 76 90 76 88 75 90 74 92 Temp 80 77 87 85 79 76 86 83 78 75 87 85 77 76 89 87 Dewpt 72 72 72 72 73 71 72 71 71 69 66 66 67 65 64 65 PWind dir S SW S SW SW W W NW Wind char LT LT LT LT LT LT LT LT Avg clouds B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 SC SC SC SC SC PoP 12hr 50 70 60 70 40 40 10 10 Rain shwrs C C C L L C C L C S S C Tstms C C C C S S C C S C $$ MDZ013-212000- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 1039 AM EDT Sun Jul 21 2024 Date Sun 07/21/24 Mon 07/22/24 Tue 07/23/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 91 74 86 72 91 Temp 83 89 88 84 79 76 75 76 82 84 83 78 75 74 73 75 82 88 89 85 Dewpt 70 68 68 69 71 72 72 73 73 72 72 73 73 72 72 73 72 72 72 72 RH 65 50 52 61 77 87 90 90 74 67 70 85 94 93 97 94 72 59 57 65 Wind dir NW SE SE S S S SE E SE SE SE SE SE S SW W W W SW S Wind spd 2 4 6 5 3 3 2 3 6 9 9 6 4 3 3 4 5 8 6 4 Clouds FW SC B1 B1 B1 B1 B1 B1 B1 B2 B2 B2 OV B2 B1 B1 B1 B1 B1 B1 PoP 12hr 5 20 70 70 40 QPF 12hr 0 0 0.41 0.26 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C L L L L S S S S C C C Tstms S S S C C C L C S S S S C C C Heat index 87 93 92 88 87 90 88 87 95 96 91 Max heat 93 94 87 90 90 95 96 Date Wed 07/24/24 Thu 07/25/24 Fri 07/26/24 Sat 07/27/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 73 87 73 88 72 89 70 91 Temp 76 75 85 83 75 76 86 82 74 74 87 84 72 73 89 85 Dewpt 73 74 74 74 74 74 74 73 72 71 69 69 68 67 65 67 PWind dir S SW SW SW SW W W NE Wind char LT LT LT LT LT LT LT LT Avg clouds B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 SC SC FW FW SC PoP 12hr 50 70 60 70 50 30 10 10 Rain shwrs C C C L L C C L C S S C Tstms C C C C S C C C S S C $$ MDZ011-212000- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 1039 AM EDT Sun Jul 21 2024 Date Sun 07/21/24 Mon 07/22/24 Tue 07/23/24 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 87 75 92 Temp 86 91 91 87 83 80 79 78 83 85 84 80 77 77 76 76 84 90 90 86 Dewpt 67 66 65 67 70 70 70 71 70 69 71 72 72 71 71 71 70 69 69 70 RH 53 44 42 52 65 72 74 79 65 59 65 77 85 82 85 85 63 50 50 59 Wind dir E SE SE SE S S SE E SE SE SE SE SE S SW W W SW SW S Wind spd 2 4 5 4 3 2 2 3 6 8 8 5 4 3 3 3 5 8 8 4 Clouds FW SC SC SC B1 B2 B1 B1 B1 B2 B2 B2 OV B2 B2 B2 B1 B1 B1 B1 PoP 12hr 5 20 70 70 40 QPF 12hr 0 0 0.39 0.37 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C L L L L S S S S C C C Tstms S S S C C C L C S S S S C C C Heat index 89 94 93 90 87 83 87 89 89 84 88 95 95 91 Max heat 94 94 89 83 89 90 95 96 Date Wed 07/24/24 Thu 07/25/24 Fri 07/26/24 Sat 07/27/24 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 77 90 77 90 75 91 74 93 Temp 81 77 87 85 80 77 88 84 79 75 89 86 78 75 90 87 Dewpt 72 71 72 72 73 71 72 71 71 69 66 66 66 64 62 65 PWind dir S SW SW SW W W NW N Wind char LT LT LT LT LT LT LT LT Avg clouds B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 SC SC FW FW FW PoP 12hr 50 70 60 70 50 30 10 10 Rain shwrs C C C L L C C L C S S C Tstms C C C C S C C C S S S $$ WVZ052-212000- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 1039 AM EDT Sun Jul 21 2024 Date Sun 07/21/24 Mon 07/22/24 Tue 07/23/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 90 68 82 66 87 Temp 81 87 88 82 75 71 70 73 78 80 78 74 71 69 68 71 80 85 86 81 Dewpt 64 59 58 61 62 64 65 67 69 68 69 69 67 67 67 68 67 65 65 67 RH 56 39 36 49 64 79 84 81 74 67 74 84 87 93 97 90 65 51 50 63 Wind dir N NW N NE S S E E SE SE SE SE E SW W W NW W W S Wind spd 3 4 5 3 3 2 2 2 5 9 6 4 2 2 2 4 5 6 6 4 Clouds FW SC SC B1 B1 B1 B2 B2 B2 B2 B2 OV B2 B2 B2 B1 SC B1 B1 B1 PoP 12hr 5 20 70 60 40 QPF 12hr 0 0 0.97 0.04 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C L L L L S S S S C C C Tstms S S S C L L L C S S C C C Heat index 83 83 83 82 87 88 83 Max heat 86 87 83 83 87 88 Date Wed 07/24/24 Thu 07/25/24 Fri 07/26/24 Sat 07/27/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 67 84 68 85 66 86 64 89 Temp 71 73 82 80 70 73 83 78 69 71 84 81 67 69 86 82 Dewpt 67 68 69 70 69 69 67 68 66 66 62 62 61 61 60 62 PWind dir SW SW S SW W NW NW NW Wind char LT LT LT LT LT LT LT LT Avg clouds B2 B2 B2 B2 B2 B2 B1 B1 B1 B1 SC SC FW FW FW FW PoP 12hr 30 60 30 70 30 30 5 10 Rain shwrs C C C L C S C L C S C Tstms C S C C S S C C S $$ VAZ506-212000- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 1039 AM EDT Sun Jul 21 2024 Date Sun 07/21/24 Mon 07/22/24 Tue 07/23/24 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 91 72 85 70 89 Temp 83 89 90 85 79 75 74 76 81 82 80 78 74 72 71 73 82 88 88 83 Dewpt 71 67 65 67 70 72 72 73 74 74 73 72 73 72 71 73 73 72 72 73 RH 67 48 44 55 74 90 93 90 79 77 79 82 97100100100 74 59 59 72 Wind dir N N S S S S SE SE SE SE SE SE S S W W W W SW S Wind spd 3 3 4 5 3 2 3 3 5 6 6 5 4 3 3 3 4 6 5 4 Clouds FW SC SC B1 B1 B1 OV B2 B1 B2 B2 B2 B2 B2 B2 B1 B1 B1 B1 B1 PoP 12hr 5 30 70 60 40 QPF 12hr 0 0.08 1.35 0.32 0.01 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C L L L L S S S S C C C Tstms C C C C L L L C S S S C C C Heat index 88 92 92 88 86 88 84 87 95 95 89 Max heat 92 94 86 88 88 95 96 Date Wed 07/24/24 Thu 07/25/24 Fri 07/26/24 Sat 07/27/24 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 86 72 85 70 88 68 90 Temp 75 74 84 82 74 74 83 80 72 73 86 83 71 71 88 84 Dewpt 73 73 74 74 74 74 74 73 72 71 69 69 67 66 67 68 PWind dir S SW S SW SW NW NW NW Wind char LT LT LT LT LT LT LT LT Avg clouds B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 SC SC SC FW SC PoP 12hr 50 70 50 70 40 40 10 10 Rain shwrs C C C L C S C L C S S C Tstms C C C C S S C C S C $$ VAZ037-212000- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 1039 AM EDT Sun Jul 21 2024 Date Sun 07/21/24 Mon 07/22/24 Tue 07/23/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 90 70 83 68 89 Temp 83 88 86 81 75 72 72 72 78 81 80 77 72 71 70 71 82 87 86 81 Dewpt 65 63 64 67 68 69 69 70 70 71 71 69 69 69 67 69 68 68 68 69 RH 55 43 48 63 79 90 90 93 76 72 74 76 90 93 90 93 63 53 55 67 Wind dir E SE SE S W SE SE S S SE SE SE S SW W W SW S S SW Wind spd 2 3 5 4 2 1 2 2 4 5 6 4 3 4 3 4 4 6 8 6 Clouds FW SC B1 B1 B1 B2 B2 B2 B2 B2 B2 B1 B1 B1 SC SC SC B1 B1 B2 PoP 12hr 30 40 80 50 50 QPF 12hr 0 0.15 0.12 0.13 0.02 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C C C C L L D D C C S S C C C Tstms S C C C C C C C C L C C S C C C Obvis PF Heat index 85 89 87 83 85 83 85 91 89 84 Max heat 89 90 85 85 91 91 Date Wed 07/24/24 Thu 07/25/24 Fri 07/26/24 Sat 07/27/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 70 86 70 83 69 87 67 89 Temp 73 73 83 80 74 71 81 78 71 71 85 80 70 70 86 82 Dewpt 70 71 72 70 70 70 71 69 69 69 67 67 66 65 64 66 PWind dir SW SW SW SW SW SW NW E Wind char LT LT LT LT LT LT LT LT Avg clouds B1 B2 B2 B2 B2 B2 B2 B2 B1 B1 B1 B1 SC SC SC SC PoP 12hr 50 80 50 70 40 50 20 20 Rain shwrs C C C D C C C L C S C C S S Tstms C C S C C S S C C S C S S $$ MDZ003-212000- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 1039 AM EDT Sun Jul 21 2024 Date Sun 07/21/24 Mon 07/22/24 Tue 07/23/24 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 90 70 84 69 89 Temp 82 89 89 84 76 73 71 74 80 81 79 75 71 71 70 72 80 85 87 82 Dewpt 68 62 59 62 64 66 67 69 71 72 71 71 70 70 69 70 71 69 67 69 RH 63 41 37 48 66 79 87 84 74 74 77 87 97 97 97 93 74 59 52 65 Wind dir N NW N E E SE E E SE SE SE E E S SW W W W W S Wind spd 3 4 4 4 4 3 3 3 4 8 8 4 3 3 3 3 4 8 5 3 Clouds FW FW SC B1 B1 B2 B2 B2 B2 B2 B2 OV B2 B2 B2 B1 SC B1 SC B1 PoP 12hr 5 20 70 60 40 QPF 12hr 0 0 0.50 0.04 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C L L L L S S S S C C C Tstms S S S C L L L C S S S C C C Heat index 85 89 85 83 85 83 89 90 85 Max heat 89 89 82 85 85 89 90 Date Wed 07/24/24 Thu 07/25/24 Fri 07/26/24 Sat 07/27/24 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 69 85 70 86 68 87 65 90 Temp 73 73 83 81 73 73 85 79 70 71 85 81 68 70 87 83 Dewpt 69 71 71 72 71 72 71 70 69 69 65 64 63 64 63 64 PWind dir SE SW S SW W NW N NW Wind char LT LT LT LT LT LT LT LT Avg clouds B1 B2 B2 B2 B1 B1 B1 B1 B1 B1 SC FW FW FW FW FW PoP 12hr 30 60 30 70 30 30 5 10 Rain shwrs C C C L C S S L C C Tstms C S C C S S C C S $$ MDZ017-212000- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 1039 AM EDT Sun Jul 21 2024 Date Sun 07/21/24 Mon 07/22/24 Tue 07/23/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 89 75 85 74 91 Temp 84 86 88 84 80 77 76 79 83 83 83 81 76 76 75 78 84 88 89 85 Dewpt 71 72 72 72 73 73 73 73 73 74 75 74 74 73 72 73 73 74 75 75 RH 65 63 59 67 79 87 90 82 72 74 77 79 94 90 90 85 70 63 64 72 Wind dir E SE SE S S S S SE SE SE SE S S SW SW SW W SW S S Wind spd 3 6 8 8 6 5 5 6 9 11 11 8 6 8 8 8 8 9 9 8 Clouds SC B1 SC SC SC B1 B2 B2 B1 B2 B2 B1 B2 B2 B2 B1 SC SC SC B1 PoP 12hr 10 20 70 60 50 QPF 12hr 0 0 0.15 0.04 0.04 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C L L L L S S S S C C C Tstms S S C C C C L C S S S S C C C Heat index 89 92 95 90 84 89 90 90 86 90 97 99 94 Max heat 92 95 86 90 90 97 99 Date Wed 07/24/24 Thu 07/25/24 Fri 07/26/24 Sat 07/27/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 75 88 75 86 74 87 74 89 Temp 78 79 86 83 77 78 85 82 76 77 86 84 76 77 87 84 Dewpt 75 74 75 75 75 74 75 74 73 73 72 71 71 70 68 69 PWind dir S SW SW SW SW W W NE Wind char LT LT LT GN LT LT LT LT Avg clouds B2 B2 B2 B1 B2 B2 B2 B1 B2 B2 B1 B1 SC SC SC FW PoP 12hr 50 80 70 70 50 40 20 20 Rain shwrs C C C D L C C L C C C C S S S Tstms C C S C C S C C C S S C S S $$ WVZ502-212000- Petersburg WV 38.99N 79.15W Elev. 963 ft 1039 AM EDT Sun Jul 21 2024 Date Sun 07/21/24 Mon 07/22/24 Tue 07/23/24 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 90 65 84 64 89 Temp 83 88 89 82 73 69 67 70 79 81 80 76 69 67 65 68 80 86 87 80 Dewpt 63 61 62 65 65 65 64 66 69 69 70 69 69 67 65 68 68 66 66 68 RH 51 40 41 56 76 87 90 87 72 67 72 79100100100100 67 51 50 67 Wind dir N N W S SW S E SE SE SE NW W SW W W W W W W SW Wind spd 1 2 3 3 2 1 1 1 2 4 4 3 2 3 3 3 3 5 4 3 Clouds FW SC B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 B1 B1 B1 B1 B1 B2 PoP 12hr 20 30 80 50 60 QPF 12hr 0 0 1.15 0.01 0.04 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S C C C C D D C C S S C C L L C Tstms S S S C C C C L L C C S S S C C C Obvis PF Heat index 84 88 89 84 84 83 83 88 89 83 Max heat 88 89 84 85 88 90 Date Wed 07/24/24 Thu 07/25/24 Fri 07/26/24 Sat 07/27/24 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 65 85 65 87 64 88 61 91 Temp 69 69 83 80 68 69 86 79 66 68 86 81 64 66 89 83 Dewpt 67 68 69 70 68 68 67 68 66 66 63 63 61 62 60 62 PWind dir SW SW SW W W NW W NW Wind char LT LT LT LT LT LT LT LT Avg clouds B2 B2 B2 B2 B2 B1 B1 B2 B1 B1 SC SC SC FW FW SC PoP 12hr 40 70 40 70 30 40 5 20 Rain shwrs C C C L C C C L C S C C S Tstms C C C S S C C S S S $$ MDZ014-212000- Annapolis MD 38.99N 76.49W Elev. 7 ft 1039 AM EDT Sun Jul 21 2024 Date Sun 07/21/24 Mon 07/22/24 Tue 07/23/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 88 76 84 73 88 Temp 82 86 87 83 80 79 78 78 81 82 81 78 76 76 75 76 82 86 87 83 Dewpt 72 71 69 72 73 74 73 73 73 74 73 74 74 74 72 72 73 72 72 74 RH 72 61 55 70 79 85 85 85 77 77 77 88 94 94 90 87 74 63 61 74 Wind dir SE SE S S S S S SE SE SE SE SE S SW SW W W SW SW S Wind spd 3 6 8 6 5 4 3 4 8 11 11 8 6 5 5 6 8 9 9 6 Clouds FW SC SC SC B1 B1 B2 B1 B1 B2 B2 B2 B2 B2 B2 B1 B1 SC SC B1 PoP 12hr 10 20 70 70 50 QPF 12hr 0 0 0.27 0.13 0.01 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C L L L L C C S S C C L Tstms S S S C C C L C C C S S C C C Heat index 87 91 91 88 84 86 88 86 87 92 94 90 Max heat 91 91 87 88 88 92 94 Date Wed 07/24/24 Thu 07/25/24 Fri 07/26/24 Sat 07/27/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 75 86 75 85 74 86 73 87 Temp 79 78 84 83 78 76 83 82 77 76 84 83 76 75 86 84 Dewpt 75 73 75 75 75 74 75 75 73 71 70 71 71 67 67 69 PWind dir S SW SW SW SW W W NE Wind char LT LT LT LT LT LT LT LT Avg clouds B2 B2 B1 B2 B2 B2 B2 B2 B2 B2 B1 SC SC SC SC FW PoP 12hr 60 70 70 70 50 40 10 10 Rain shwrs L C C L L C C L C C S C Tstms C C C C S C C C S S C $$