Point Forecast Matrices
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
117 FOUS51 KLWX 160537 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 137 AM EDT Sat Aug 16 2025 VAZ054-162000- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 137 AM EDT Sat Aug 16 2025 Date Sat 08/16/25 Sun 08/17/25 Mon 08/18/25 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 74 92 75 85 Temp 75 75 81 86 87 83 78 76 74 75 84 90 90 84 81 79 77 77 81 83 82 78 Dewpt 73 72 71 70 69 70 70 70 70 71 71 70 69 71 72 71 71 70 70 69 69 69 RH 94 90 72 59 55 65 76 82 87 87 65 52 50 65 74 77 82 79 69 63 65 74 Wind dir E E E SE SE SE S S S S S SW SW S SW W N N NE NE E E Wind spd 5 5 5 5 6 6 5 5 5 5 5 5 5 6 5 5 5 6 9 10 11 10 Clouds B2 B2 B1 FW FW FW FW FW FW FW FW FW SC B1 SC SC SC FW SC B1 B1 B1 PoP 12hr 5 5 10 10 20 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S Heat index 85 91 91 87 89 96 95 89 85 85 87 85 Max heat 91 92 84 96 97 88 87 87 Date Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 Fri 08/22/25 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 83 70 84 69 82 68 82 Temp 73 72 80 77 72 71 82 78 73 70 79 76 71 69 80 76 Dewpt 69 69 67 67 67 67 66 66 66 65 63 64 64 65 62 62 PWind dir E E E E NE NE E SE Wind char GN GN GN GN GN GN LT GN Avg clouds B1 B1 B1 SC SC B1 SC B1 B1 B1 SC B1 SC B1 B1 SC PoP 12hr 20 20 20 40 30 30 20 20 Rain shwrs S S S S S C C S S C S S Tstms S S S $$ MDZ013-162000- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 137 AM EDT Sat Aug 16 2025 Date Sat 08/16/25 Sun 08/17/25 Mon 08/18/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 88 71 91 72 83 Temp 74 74 80 85 85 81 76 73 72 74 84 90 88 82 78 75 74 74 79 80 78 74 Dewpt 72 72 72 72 71 71 70 70 70 71 73 73 74 74 73 72 70 70 71 72 71 70 RH 93 93 77 65 63 72 82 90 93 90 70 58 63 77 85 90 87 87 77 77 79 87 Wind dir E E E SE SE SE S S S S S S S S SW NW N NE NE NE E E Wind spd 2 3 4 4 4 3 2 2 2 2 3 5 5 3 2 2 4 5 6 6 6 5 Clouds B2 B2 B1 SC FW FW FW FW FW FW FW SC SC SC SC SC FW FW SC B1 B1 B1 PoP 12hr 10 5 10 20 30 QPF 12hr 0 0 0 0 0.01 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C S Tstms S Heat index 84 91 90 85 90 98 97 88 84 Max heat 91 92 98 98 84 84 84 Date Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 Fri 08/22/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 68 81 68 83 67 81 65 82 Temp 69 69 78 75 70 70 80 76 70 69 78 75 68 68 79 75 Dewpt 68 68 68 68 67 68 69 68 66 65 65 65 64 65 65 65 PWind dir E E E E NE NE E SE Wind char LT LT LT LT LT LT LT LT Avg clouds B1 B1 B1 B1 B1 B1 SC B1 B1 B1 SC SC SC SC SC SC PoP 12hr 20 20 30 40 30 20 10 20 Rain shwrs S S S S C S S C C S S S S Tstms S S $$ MDZ011-162000- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 137 AM EDT Sat Aug 16 2025 Date Sat 08/16/25 Sun 08/17/25 Mon 08/18/25 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 77 96 77 89 Temp 77 77 82 88 90 85 83 80 78 78 89 92 93 88 85 82 80 78 84 85 83 80 Dewpt 73 72 70 70 69 69 70 70 70 69 70 70 70 71 71 71 70 69 68 68 68 68 RH 87 85 67 55 50 59 65 72 76 74 54 49 47 57 63 69 72 74 59 57 61 67 Wind dir E E E SE SE SE SE S S S S S S S SW NW N NE NE NE E E Wind spd 2 2 4 4 4 3 2 2 2 2 3 5 5 3 2 2 4 5 6 6 6 5 Clouds B2 B2 B1 SC FW FW FW FW FW FW FW SC SC SC SC SC FW FW SC B1 B1 B1 PoP 12hr 10 5 10 20 30 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C S Tstms S Heat index 86 93 95 89 87 83 94 98 99 94 90 86 83 87 88 86 83 Max heat 93 95 88 98 99 93 85 88 88 Date Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 Fri 08/22/25 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 88 71 86 70 87 Temp 76 73 82 80 76 72 84 81 75 71 83 80 74 70 84 81 Dewpt 67 66 65 65 66 65 65 64 64 63 62 61 63 63 61 62 PWind dir E E E E NE NE E SE Wind char LT LT LT LT LT LT LT LT Avg clouds B1 B1 B1 B1 B1 B1 B1 B1 B1 SC SC B1 SC SC SC SC PoP 12hr 20 20 30 40 30 20 10 10 Rain shwrs S S S S C C S C C S S S Tstms S S $$ WVZ052-162000- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 137 AM EDT Sat Aug 16 2025 Date Sat 08/16/25 Sun 08/17/25 Mon 08/18/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 90 68 92 70 85 Temp 71 73 81 86 86 80 74 71 69 72 85 90 88 83 76 73 71 72 79 83 83 77 Dewpt 70 71 71 70 69 70 69 68 68 68 70 68 69 70 70 70 68 67 67 67 67 67 RH 97 93 72 59 57 72 84 90 97 87 61 49 54 65 82 90 90 84 67 59 59 71 Wind dir E SE SE SE S SE S S S SW W NW NW NW NW NW N N NE NE E E Wind spd 1 2 4 4 3 2 2 2 2 1 2 4 5 3 3 3 5 5 5 5 5 5 Clouds B1 B1 SC FW SC FW FW FW FW FW FW SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 20 10 20 10 20 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S S Tstms S S Obvis PF PF PF Heat index 85 91 90 83 90 94 92 87 86 86 Max heat 91 91 94 94 85 86 87 Date Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 Fri 08/22/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 67 83 66 83 63 80 62 82 Temp 69 69 80 76 68 69 80 75 66 66 78 73 64 65 79 74 Dewpt 67 67 67 67 65 65 66 66 65 63 63 64 62 62 62 62 PWind dir E SE SE SE NE NE E SE Wind char LT LT LT LT LT LT LT LT Avg clouds B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 SC B1 SC SC SC SC PoP 12hr 20 30 30 50 30 30 10 20 Rain shwrs S C C C S C C S S C S Tstms C C S C S $$ VAZ506-162000- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 137 AM EDT Sat Aug 16 2025 Date Sat 08/16/25 Sun 08/17/25 Mon 08/18/25 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 92 72 86 Temp 73 74 80 86 87 82 76 73 71 73 84 90 88 83 78 75 73 73 80 83 81 76 Dewpt 73 73 73 74 71 71 71 70 70 71 75 73 73 73 73 72 71 71 73 72 72 70 RH 100 97 79 68 59 69 85 90 97 93 74 58 61 72 85 90 93 93 79 70 74 82 Wind dir E E SE SE SE S S S S S SW SW W NW W NW N N NE NE E E Wind spd 2 3 3 3 4 4 3 3 2 2 3 3 4 4 3 3 4 5 5 5 5 5 Clouds B2 B2 B1 FW FW FW FW FW FW FW FW SC SC B1 SC SC SC FW SC SC SC SC PoP 12hr 10 5 20 20 20 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Drizzle S Rain shwrs S S S S S S S Tstms S S S Obvis PF Heat index 84 94 93 86 92 98 96 89 84 88 85 Max heat 94 96 98 98 86 88 88 Date Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 Fri 08/22/25 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 68 83 67 84 66 81 65 82 Temp 70 69 80 76 70 69 82 76 69 68 78 74 67 67 79 75 Dewpt 69 69 70 69 68 68 70 69 67 67 67 66 65 66 66 65 PWind dir E E SE E NE NE E SE Wind char LT LT LT LT LT LT LT LT Avg clouds B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 SC SC PoP 12hr 20 30 30 40 30 30 20 20 Rain shwrs S S C C S C C S S C S S Tstms S C S S $$ VAZ037-162000- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 137 AM EDT Sat Aug 16 2025 Date Sat 08/16/25 Sun 08/17/25 Mon 08/18/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 88 69 93 71 87 Temp 72 73 81 86 85 79 74 71 69 72 85 90 87 81 76 73 72 73 81 85 83 78 Dewpt 71 72 72 70 69 70 70 70 69 70 71 68 69 70 71 71 70 71 70 69 69 69 RH 97 97 74 59 59 74 87 97100 93 63 49 55 69 85 93 93 93 69 59 63 74 Wind dir NE NE E E SE W SW S S SW SW S NE N NW NW N N NE NE NE NE Wind spd 1 2 3 3 3 2 1 1 1 1 2 2 2 2 2 2 2 3 4 5 5 5 Clouds B1 B2 B1 SC FW FW FW FW FW FW FW SC SC SC SC SC SC FW SC SC SC SC PoP 12hr 20 10 10 10 20 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Drizzle S Rain shwrs S S S Tstms S S S Obvis PF PF PF Heat index 85 91 89 90 94 91 85 85 89 87 Max heat 91 90 95 94 89 89 Date Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 Fri 08/22/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 69 83 67 84 66 81 65 81 Temp 71 70 79 75 70 69 81 75 68 67 78 73 67 66 79 73 Dewpt 70 70 69 68 68 67 66 67 67 65 64 64 64 64 63 63 PWind dir NE E E E NE NE NE SE Wind char LT LT LT LT LT LT LT LT Avg clouds SC B2 B1 B1 SC B1 SC B1 B1 B1 B1 B1 B1 B1 B1 B1 PoP 12hr 20 30 20 40 30 40 30 30 Rain shwrs S S C S C C S S C C S S C Tstms S C S S S S $$ MDZ003-162000- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 137 AM EDT Sat Aug 16 2025 Date Sat 08/16/25 Sun 08/17/25 Mon 08/18/25 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 69 92 70 85 Temp 72 74 81 86 87 81 75 72 70 73 84 90 88 83 76 74 71 72 79 83 82 76 Dewpt 70 71 72 73 71 70 70 69 68 70 72 71 71 71 71 71 68 67 68 68 67 67 RH 93 90 74 65 59 69 84 90 93 90 67 54 57 67 85 90 90 84 69 61 61 74 Wind dir SE SE S S S SE S S S S SW NW NW NW N N N NE NE NE E E Wind spd 2 2 3 3 3 3 3 3 2 2 3 5 5 4 4 4 5 5 5 5 5 5 Clouds B1 B1 SC SC FW FW FW FW FW FW FW SC SC SC SC SC FW SC SC B1 SC SC PoP 12hr 20 10 20 20 20 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S S S S S Tstms S S S S Heat index 85 93 93 85 90 96 94 88 86 85 Max heat 93 94 96 96 85 86 86 Date Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 Fri 08/22/25 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 83 65 83 64 80 62 82 Temp 69 68 79 76 68 68 79 75 67 66 78 73 65 65 79 74 Dewpt 67 66 68 67 66 66 68 66 65 64 65 64 62 62 65 63 PWind dir E SE SE E NE NE NE SE Wind char LT LT LT LT LT LT LT LT Avg clouds B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 SC SC SC SC SC SC PoP 12hr 20 30 40 50 40 20 20 20 Rain shwrs S S C C C S C C S S S S Tstms C C S C S $$ MDZ017-162000- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 137 AM EDT Sat Aug 16 2025 Date Sat 08/16/25 Sun 08/17/25 Mon 08/18/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 85 71 87 73 84 Temp 74 75 79 83 84 79 75 73 72 75 82 86 86 81 77 75 74 77 81 82 80 76 Dewpt 72 73 72 72 71 71 70 70 70 71 70 72 71 72 71 71 71 72 73 73 72 71 RH 93 94 79 70 65 77 84 90 93 87 67 63 61 74 82 87 90 85 77 74 77 85 Wind dir E E E E E SE SE S SW SW S S S S S SW W N N NE NE E Wind spd 5 5 5 4 5 5 5 3 2 2 3 5 6 6 5 5 5 5 8 9 9 9 Clouds B2 B1 B1 SC FW FW CL FW FW FW CL FW FW FW SC FW FW FW SC SC B1 B1 PoP 12hr 5 0 5 10 20 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S Tstms S Heat index 88 89 86 92 91 85 86 87 84 Max heat 88 91 92 94 87 87 Date Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 Fri 08/22/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 71 82 70 83 70 81 69 81 Temp 72 74 80 76 72 74 81 76 71 73 78 75 71 73 79 76 Dewpt 70 70 70 68 67 70 69 69 66 68 67 66 65 66 66 66 PWind dir E E E E NE NE E SE Wind char LT GN LT GN GN GN LT LT Avg clouds B1 SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 20 20 10 20 20 20 20 20 Rain shwrs S S S S S S S S S S S S $$ WVZ502-162000- Petersburg WV 38.99N 79.15W Elev. 963 ft 137 AM EDT Sat Aug 16 2025 Date Sat 08/16/25 Sun 08/17/25 Mon 08/18/25 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 66 92 67 86 Temp 67 69 81 88 88 79 71 68 66 68 84 89 87 79 73 69 67 68 78 83 83 76 Dewpt 65 67 70 68 69 71 69 67 65 66 70 70 71 71 70 68 67 68 71 70 70 70 RH 93 93 69 52 54 77 93 97 97 93 63 54 59 77 90 97100100 79 65 65 82 Wind dir SW W SE E S S S S SW S NW NW NW NW NW NW NW N NE NE E E Wind spd 1 1 1 2 2 2 2 2 2 2 2 4 5 3 2 1 2 2 3 3 3 3 Clouds SC SC SC FW SC SC FW FW SC SC FW B1 B1 SC SC SC SC B1 SC B1 B1 SC PoP 12hr 20 5 40 20 30 QPF 12hr 0 0 0.03 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C S S C C S Tstms S C C S C C Obvis PF PF PF PF PF Heat index 85 92 92 88 94 93 87 87 Max heat 92 94 94 95 87 88 Date Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 Fri 08/22/25 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 86 62 81 61 82 Temp 67 66 82 75 67 66 81 74 65 63 78 72 64 63 79 72 Dewpt 67 66 71 71 67 66 71 69 65 63 67 66 62 62 66 65 PWind dir SE SE SE SE NE NE E S Wind char LT LT LT LT LT LT LT LT Avg clouds B1 B1 B1 B1 B1 B1 B1 B2 B1 B1 B1 B1 B1 B1 B1 B1 PoP 12hr 20 40 40 60 30 40 20 30 Rain shwrs S S C C C C L C S C C S S C Tstms C C S C S C S $$ MDZ014-162000- Annapolis MD 38.99N 76.49W Elev. 7 ft 137 AM EDT Sat Aug 16 2025 Date Sat 08/16/25 Sun 08/17/25 Mon 08/18/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 85 73 87 75 81 Temp 75 75 79 83 84 81 78 76 74 75 82 86 86 82 79 78 76 77 79 80 79 76 Dewpt 73 72 72 71 70 70 73 72 71 71 71 72 72 72 73 73 73 72 71 71 70 69 RH 94 90 79 67 63 69 85 87 90 87 69 63 63 72 82 85 90 85 77 74 74 79 Wind dir E E E E SE S S S SW SW S S S S S SW N N NE NE E E Wind spd 4 4 5 5 4 3 4 4 3 3 5 8 8 5 4 3 5 5 8 10 10 9 Clouds B2 B2 SC FW CL CL FW FW FW FW FW FW SC SC SC FW FW FW SC B1 B1 B1 PoP 12hr 5 5 10 20 30 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C S Heat index 88 88 85 86 92 92 87 83 Max heat 88 89 92 94 85 83 83 Date Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 Fri 08/22/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 71 80 70 81 69 79 68 79 Temp 73 72 78 76 72 72 80 77 72 71 78 76 71 70 78 76 Dewpt 69 69 68 67 68 67 67 67 67 66 64 64 65 66 64 65 PWind dir E E E E NE NE SE SE Wind char LT GN LT GN LT GN LT LT Avg clouds B1 B1 B1 SC SC SC SC B1 B1 SC SC SC SC SC SC SC PoP 12hr 20 20 20 30 30 20 20 20 Rain shwrs S S S S S S C C S S S S S S Tstms S $$