Point Forecast Matrices
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
163 FOUS51 KLWX 192337 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 737 PM EDT Tue Aug 19 2025 VAZ054-200800- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 737 PM EDT Tue Aug 19 2025 Date 08/19/25 Wed 08/20/25 Thu 08/21/25 Fri 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 71 86 72 79 66 Temp 71 71 71 72 73 77 82 83 78 76 75 74 73 74 76 76 73 71 69 67 68 Dewpt 67 68 69 69 70 72 72 71 72 72 72 71 70 68 67 66 65 63 62 61 61 RH 87 90 93 90 90 85 72 67 82 87 90 90 90 82 74 71 76 76 78 81 78 Wind dir E E E NE NE SE SE SE E E NE NE NE NE NE NE N N N N N Wind spd 8 9 6 6 5 6 8 10 11 11 10 12 12 14 16 16 13 11 10 11 10 Clouds OV B2 B2 B2 B2 B1 B1 B1 B1 B1 B1 B2 B2 B2 B2 B2 B1 SC FW FW FW PoP 12hr 20 40 30 30 5 QPF 12hr 0 0.05 0.01 0 0 Snow 12hr 00-00 00-00 00-00 Drizzle O O O O Rain shwrs S S C C C S S S S C C Tstms S C C S Heat index 87 88 Max heat 87 88 Date 08/22 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 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 82 65 83 69 84 68 83 64 80 Temp 80 74 68 67 81 76 72 71 82 76 72 70 80 75 68 66 77 73 Dewpt 57 58 60 61 60 62 64 66 66 66 66 64 59 57 57 57 53 53 PWind dir NE S S S S SW NW NW NW Wind char GN LT GN GN GN LT GN LT GN Avg clouds FW FW FW FW FW SC SC SC B1 B1 B1 SC SC SC FW FW FW SC PoP 12hr 0 0 5 20 50 30 20 5 5 Rain shwrs S C C C S S Tstms S S S $$ MDZ013-200800- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 737 PM EDT Tue Aug 19 2025 Date 08/19/25 Wed 08/20/25 Thu 08/21/25 Fri EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 68 84 69 77 63 Temp 70 69 69 70 70 75 80 81 76 73 72 71 70 73 75 75 72 68 66 64 65 Dewpt 68 68 68 69 70 74 76 75 74 73 72 70 70 70 70 68 66 63 61 59 61 RH 93 97 97 97100 97 88 82 94100100 97100 90 84 79 81 84 84 84 87 Wind dir E E E E E SE SE SE E E NE NE NE NE NE NE N N N N N Wind spd 6 5 4 4 4 5 5 8 8 8 8 9 11 13 13 14 11 9 8 8 9 Clouds B2 B2 B2 B2 OV B2 B1 B1 B1 B1 B2 B2 B2 B2 B2 B2 B1 SC FW FW FW PoP 12hr 30 40 30 20 5 QPF 12hr 0.02 0.05 0.03 0 0 Snow 12hr 00-00 00-00 00-00 Drizzle O O O Rain shwrs S S C C C S S S S Tstms S C C S Heat index 86 87 Max heat 86 87 Coast Flood W W W Date 08/22 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 81 63 82 67 83 66 82 62 80 Temp 79 73 65 66 80 74 70 69 81 75 69 68 80 74 65 64 77 72 Dewpt 59 60 61 62 63 64 65 67 69 69 67 65 62 60 57 57 55 55 PWind dir NE S S S S SW NW NW NW Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW FW FW SC B1 B1 B1 B1 SC SC SC FW FW FW FW PoP 12hr 0 0 5 30 50 40 20 5 5 Rain shwrs C C C C S S Tstms S S S $$ MDZ011-200800- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 737 PM EDT Tue Aug 19 2025 Date 08/19/25 Wed 08/20/25 Thu 08/21/25 Fri 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 73 89 74 82 68 Temp 73 75 75 75 75 80 84 85 79 79 78 76 74 77 80 79 74 74 72 69 70 Dewpt 65 66 67 68 68 71 72 72 72 71 71 70 67 67 66 65 63 62 60 59 59 RH 76 74 76 79 79 74 67 65 79 77 79 82 79 71 62 62 69 66 66 70 68 Wind dir E E E E E SE E SE E E NE NE NE NE NE NE N N N N N Wind spd 8 5 4 4 4 5 6 8 8 8 8 9 11 13 13 14 11 9 8 8 9 Clouds OV B2 B2 B2 B2 B2 B2 B1 B1 B1 B2 B2 B2 B2 B2 B2 B1 SC FW FW FW PoP 12hr 30 40 40 20 5 QPF 12hr 0 0.05 0.05 0 0 Snow 12hr 00-00 00-00 00-00 Drizzle AR O O Rain shwrs S S C C C S S S S Tstms S C C S Heat index 83 90 91 82 Max heat 90 91 83 82 82 Coast Flood Y Y Date 08/22 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 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 86 69 87 72 88 71 87 67 84 Temp 83 77 73 70 84 77 75 73 85 78 75 72 85 77 72 68 82 75 Dewpt 56 57 59 60 60 61 64 65 66 66 66 63 59 57 57 55 52 53 PWind dir NE S S S S SW NW NW NW Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW FW SC SC B1 B1 B1 B1 SC SC SC FW FW FW SC PoP 12hr 0 0 5 30 50 40 20 5 5 Rain shwrs S C C C C S S Tstms S S S $$ WVZ052-200800- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 737 PM EDT Tue Aug 19 2025 Date 08/19/25 Wed 08/20/25 Thu 08/21/25 Fri EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 66 84 67 77 61 Temp 70 67 67 67 68 75 80 81 77 72 70 69 69 72 74 75 71 67 64 62 65 Dewpt 65 66 65 65 66 69 70 70 71 71 69 68 67 66 67 66 65 63 62 61 61 RH 84 97 93 93 93 82 72 69 82 97 97 97 93 81 79 74 81 87 93 97 87 Wind dir E SE SE SE SE SE SE SE E NE NE NE NE NE N NE NE N N N N Wind spd 6 5 3 4 4 5 5 5 6 5 5 8 9 10 11 12 9 6 5 5 4 Clouds B2 B2 B2 B2 B1 B2 B1 B1 B1 B2 B2 B2 B2 B2 B2 B1 B1 B1 SC SC SC PoP 12hr 20 50 50 40 10 QPF 12hr 0 0.05 0.10 0 0 Snow 12hr 00-00 00-00 00-00 Drizzle O Rain shwrs S C C C C C C C C C Tstms S C C S Heat index 83 85 Max heat 83 85 Date 08/22 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 82 60 82 64 83 60 81 55 78 Temp 79 73 62 65 79 75 67 67 80 73 64 64 77 71 59 60 75 68 Dewpt 60 59 57 59 62 63 63 64 66 65 62 61 56 54 53 53 52 52 PWind dir NE SE S S SW SW W NW NW Wind char LT LT GN LT LT LT LT LT LT Avg clouds FW FW FW FW SC SC B1 B1 B1 B1 SC SC FW FW FW FW FW SC PoP 12hr 0 0 20 30 50 20 20 0 5 Rain shwrs S C C C C S S Tstms S S C S S $$ VAZ506-200800- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 737 PM EDT Tue Aug 19 2025 Date 08/19/25 Wed 08/20/25 Thu 08/21/25 Fri 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 86 69 77 63 Temp 70 69 69 69 70 76 82 82 78 73 72 71 71 73 75 75 72 67 66 64 65 Dewpt 69 69 69 69 70 75 76 74 74 73 72 71 70 72 71 69 68 65 64 62 63 RH 97100100100100 97 82 77 88100100100 97 97 87 82 87 93 93 93 93 Wind dir E E E E E SE SE SE E E NE NE NE N N N N N N N N Wind spd 6 5 3 3 3 4 5 5 8 6 6 8 10 12 12 13 10 8 6 8 6 Clouds OV OV OV OV B2 B2 SC B1 B1 B2 B1 B2 B2 B2 B2 B2 B1 SC FW SC FW PoP 12hr 20 30 40 30 10 QPF 12hr 0 0.02 0.05 0.01 0 Snow 12hr 00-00 00-00 00-00 Drizzle O O O Rain shwrs S C C S S S S C C Tstms S C S Heat index 89 88 Max heat 89 92 Date 08/22 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 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 82 61 83 66 84 64 82 59 80 Temp 80 73 64 65 81 75 69 68 81 74 67 66 80 72 63 62 77 70 Dewpt 63 61 59 62 65 65 65 68 70 69 66 64 61 58 56 56 55 54 PWind dir NE S S S S SW NW NW NW Wind char LT LT GN LT LT LT LT LT LT Avg clouds FW FW FW FW SC SC SC B1 B1 B1 B1 SC SC SC FW FW FW SC PoP 12hr 0 0 10 30 50 30 20 5 5 Rain shwrs S C C C C S Tstms S S S S S $$ VAZ037-200800- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 737 PM EDT Tue Aug 19 2025 Date 08/19/25 Wed 08/20/25 Thu 08/21/25 Fri EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 67 86 69 81 64 Temp 72 70 68 68 69 77 83 84 78 73 72 71 71 75 78 77 73 69 66 65 66 Dewpt 67 68 68 68 68 70 70 70 70 71 71 70 70 69 67 67 66 65 64 63 63 RH 84 93100100 97 79 65 63 76 93 97 97 97 82 69 71 79 87 93 93 90 Wind dir NE NE NE N NE E E E E NE NE NE NE NE NE NE N N N N N Wind spd 6 3 2 1 2 2 4 5 8 6 6 8 10 11 12 12 10 8 6 6 5 Clouds B1 B2 B2 B2 B1 SC SC SC B1 B1 B2 B2 B2 B2 B1 B1 SC SC B1 B1 SC PoP 12hr 20 30 40 40 20 QPF 12hr 0.02 0.02 0.09 0.02 0 Snow 12hr 00-00 00-00 00-00 Drizzle O Rain shwrs S C C C C S S C C S S Tstms S S S Heat index 87 88 Max heat 87 88 Date 08/22 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 81 62 82 64 82 62 82 57 79 Temp 78 73 64 65 78 73 67 67 80 73 66 64 80 71 61 59 77 69 Dewpt 61 61 60 61 63 63 64 65 66 66 64 62 58 56 55 55 52 53 PWind dir NE SE S S S W NW NW NW Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC SC SC SC SC B1 B1 B1 B1 B1 SC SC FW SC FW FW FW SC PoP 12hr 10 5 30 30 50 20 20 5 5 Rain shwrs C C C C C S S Tstms S S $$ MDZ003-200800- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 737 PM EDT Tue Aug 19 2025 Date 08/19/25 Wed 08/20/25 Thu 08/21/25 Fri 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 84 67 77 61 Temp 71 67 67 67 68 75 80 81 76 72 71 69 68 71 74 74 71 67 64 62 65 Dewpt 64 65 65 66 67 71 73 72 72 71 70 68 68 68 68 66 65 65 63 61 62 RH 79 93 93 97 97 87 79 74 87 97 97 97100 90 82 76 81 93 97 97 90 Wind dir SE SE SE SE SE S SE SE E NE NE NE NE NE NE NE NE N N N N Wind spd 6 5 4 4 4 4 5 5 8 8 8 8 9 11 12 12 9 8 6 6 5 Clouds B2 B2 B2 B2 B2 B2 B2 B1 B2 B2 B2 B2 B2 B2 B2 B1 B1 SC SC SC FW PoP 12hr 30 50 60 30 10 QPF 12hr 0 0.04 0.08 0 0 Snow 12hr 00-00 00-00 00-00 Drizzle AR Rain shwrs S C L L C C S S C C Tstms C C S Heat index 84 85 Max heat 84 86 Date 08/22 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 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 82 60 84 65 84 61 81 55 78 Temp 80 73 63 65 80 76 67 67 81 74 65 64 78 71 59 60 75 68 Dewpt 61 60 57 59 64 63 64 65 68 66 64 62 58 55 54 55 53 51 PWind dir NE SE S S SW SW W NW W Wind char LT LT GN LT LT LT LT LT LT Avg clouds FW FW FW FW SC SC B1 B1 B1 B1 B1 FW FW SC FW CL FW SC PoP 12hr 0 5 20 40 50 30 20 5 5 Rain shwrs S C C C C C S Tstms S S C S S $$ MDZ017-200800- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 737 PM EDT Tue Aug 19 2025 Date 08/19/25 Wed 08/20/25 Thu 08/21/25 Fri EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 72 84 73 80 66 Temp 73 72 73 73 76 80 82 82 78 76 74 74 75 77 77 77 74 71 69 68 70 Dewpt 71 71 71 72 73 74 75 74 74 73 72 72 72 72 71 69 67 65 63 62 61 RH 93 97 93 97 90 82 79 77 88 90 93 93 90 85 82 76 79 81 81 81 73 Wind dir E E E E E SE SE SE E E NE NE NE NE N N N N N N N Wind spd 10 9 8 6 6 8 9 10 11 12 12 14 16 19 20 20 17 16 14 13 14 Clouds B2 B2 B2 B1 SC B1 FW SC SC SC B1 B2 B1 B2 B1 B2 B1 B1 FW FW CL PoP 12hr 30 30 10 30 5 QPF 12hr 0.13 0.02 0 0 0 Snow 12hr 00-00 00-00 00-00 Drizzle O Rain shwrs S C S S S S C C Tstms S S S S Heat index 84 89 88 Max heat 89 90 Date 08/22 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 79 66 81 69 82 69 82 65 80 Temp 78 73 69 71 78 74 72 73 80 76 72 72 80 75 69 69 77 73 Dewpt 60 61 61 65 63 65 66 68 68 69 68 68 64 64 59 60 57 58 PWind dir N SE SE S S SW NW NW NW Wind char GN LT LT LT LT LT LT LT LT Avg clouds CL FW FW FW FW FW FW SC B1 B1 B1 SC SC SC FW FW FW FW PoP 12hr 0 0 0 20 40 30 20 10 5 Rain shwrs S C C C S S S $$ WVZ502-200800- Petersburg WV 38.99N 79.15W Elev. 963 ft 737 PM EDT Tue Aug 19 2025 Date 08/19/25 Wed 08/20/25 Thu 08/21/25 Fri 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 63 88 65 79 60 Temp 74 67 65 65 65 79 84 81 75 70 68 67 66 72 75 76 71 66 63 62 62 Dewpt 68 67 65 64 65 71 71 72 72 70 68 67 66 70 70 69 68 65 63 62 61 RH 82100100 97100 77 65 74 90100100100100 93 84 79 90 97100100 97 Wind dir E SE SE SE SE SE SE E N NE NE NE NE NE NE NE NE NE NE NE NE Wind spd 5 4 2 2 2 2 3 3 4 4 4 4 5 6 8 8 6 4 4 4 3 Clouds B1 B1 B1 SC B1 SC B2 B1 B1 B1 B2 OV OV B2 B1 B1 B1 B1 B2 B2 B1 PoP 12hr 20 60 50 50 20 QPF 12hr 0 0.32 0.11 0.05 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs L C C C C C C C C C S S Tstms C C C S S Heat index 89 85 Max heat 90 88 Date 08/22 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 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 83 60 85 62 84 57 79 51 76 Temp 79 72 62 62 81 73 65 64 80 71 60 59 76 66 54 54 73 64 Dewpt 65 64 61 60 67 68 64 63 67 64 59 57 55 55 51 50 52 52 PWind dir E S S SW SW W W W W Wind char LT LT LT LT LT LT LT LT LT Avg clouds B1 SC FW SC SC B1 B1 B1 B1 B2 SC SC SC FW FW FW FW FW PoP 12hr 20 5 40 40 60 20 20 5 5 Rain shwrs S S C C C C L S S Tstms S S C S $$ MDZ014-200800- Annapolis MD 38.99N 76.49W Elev. 7 ft 737 PM EDT Tue Aug 19 2025 Date 08/19/25 Wed 08/20/25 Thu 08/21/25 Fri EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 70 82 72 77 66 Temp 72 71 71 72 73 77 80 80 78 76 74 74 73 74 75 75 73 70 69 67 68 Dewpt 67 69 70 71 72 73 74 73 73 73 73 72 70 69 68 66 65 65 63 61 61 RH 84 93 97 97 97 87 82 79 85 90 97 93 90 84 79 74 76 84 81 81 78 Wind dir E E E E E SE SE SE E E NE NE NE NE NE NE N N N N N Wind spd 10 9 6 6 5 8 9 10 10 10 10 12 12 16 16 17 13 12 11 11 11 Wind gust 23 Clouds OV B2 B2 B1 B2 B2 SC B1 B1 B1 B1 B2 B2 B2 B2 B2 B1 SC FW CL FW PoP 12hr 30 40 30 20 5 QPF 12hr 0.03 0.01 0.01 0 0 Snow 12hr 00-00 00-00 00-00 Drizzle AR O O O Rain shwrs S S C C C S S S S S S Tstms S C C S S Heat index 84 84 Max heat 84 84 Coast Flood W W W Date 08/22 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 78 66 79 69 80 69 80 65 77 Temp 76 74 69 69 77 75 72 72 78 76 72 71 78 76 69 67 75 74 Dewpt 59 59 62 63 62 62 66 67 68 67 68 66 62 61 60 59 56 56 PWind dir NE S S S S SW NW NW NW Wind char GN LT GN GN GN LT LT LT LT Avg clouds FW FW FW FW FW FW SC SC B1 B1 B1 B1 SC SC FW FW FW FW PoP 12hr 0 0 5 20 50 40 20 5 5 Rain shwrs S C C C C S S Tstms S S S $$