Point Forecast Matrices
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
400 FOUS51 KLWX 220237 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 1037 PM EDT Thu Aug 21 2025 VAZ054-220800- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 1037 PM EDT Thu Aug 21 2025 Date 08/21/25 Fri 08/22/25 Sat 08/23/25 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 83 64 84 69 Temp 69 68 66 68 76 80 81 74 70 68 65 68 77 81 81 75 73 71 70 72 Dewpt 62 62 61 60 55 53 54 55 56 58 59 60 60 59 59 61 63 64 65 66 RH 78 81 84 76 48 39 39 51 61 70 81 76 56 47 47 62 71 79 84 81 Wind dir N N N N N NE SE SE SE S S S S S S SE S S S S Wind spd 8 6 6 6 6 5 6 6 5 5 4 3 6 10 12 11 10 9 8 6 Clouds SC SC FW CL FW FW CL FW CL CL FW FW FW FW FW FW FW SC SC SC PoP 12hr 0 0 0 0 10 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S Heat index 80 81 81 81 Max heat 80 81 81 82 Date 08/24 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 Thu 08/28/25 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 85 69 83 65 79 61 78 61 80 Temp 82 76 72 72 81 75 69 67 76 71 65 64 75 70 65 64 77 72 Dewpt 65 66 67 65 59 56 55 55 52 51 53 52 48 48 52 53 51 52 PWind dir S SW NW NW W NW NW NW NW Wind char GN LT GN GN GN LT GN LT LT Avg clouds B1 B2 B2 B1 SC SC FW SC SC SC FW FW FW SC FW FW FW SC PoP 12hr 40 40 20 5 5 0 0 0 5 Rain shwrs S C C S S S Tstms S $$ MDZ013-220800- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 1037 PM EDT Thu Aug 21 2025 Date 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 62 83 62 83 68 Temp 68 65 63 65 75 80 80 74 68 65 63 66 77 81 80 74 71 70 68 70 Dewpt 62 62 60 60 55 56 56 58 59 59 59 61 61 61 61 63 64 65 66 67 RH 81 90 90 84 50 44 44 57 73 81 87 84 58 51 52 69 79 84 93 90 Wind dir N N N N NE NE E SE S S SW SW S S S S S S S S Wind spd 5 4 4 4 5 4 4 3 2 2 2 2 5 9 10 8 6 5 5 5 Clouds SC FW CL CL CL FW FW FW CL CL CL CL FW FW FW FW FW SC B1 B1 PoP 12hr 0 0 0 0 10 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S Heat index 80 80 82 81 Max heat 80 81 82 82 Coast Flood Y Y Y Y Y Y Y Y A A A Date 08/24 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 Thu 08/28/25 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 85 68 84 63 79 59 78 59 81 Temp 82 75 70 70 81 74 67 65 76 71 63 62 75 70 62 61 77 72 Dewpt 69 69 68 67 62 59 55 56 55 54 53 53 51 52 52 54 53 55 PWind dir S SW W W W NW NW NW NW Wind char GN LT LT LT GN LT LT LT LT Avg clouds B1 B2 B2 B1 SC SC FW FW SC SC FW FW FW SC FW FW FW SC PoP 12hr 40 50 20 5 5 0 0 0 5 Rain shwrs S C C C S S Tstms S S $$ MDZ011-220800- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 1037 PM EDT Thu Aug 21 2025 Date 08/21/25 Fri 08/22/25 Sat 08/23/25 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 87 69 87 73 Temp 72 70 68 70 79 84 85 77 75 71 70 72 82 86 85 78 78 75 74 76 Dewpt 61 61 60 58 52 53 53 55 57 58 58 59 58 58 59 61 63 64 65 65 RH 68 73 76 66 39 34 33 47 54 63 66 64 44 39 41 56 60 69 74 69 Wind dir N N N N NE NE E SE S S SW SW S S S S S S S S Wind spd 5 4 4 4 5 4 5 2 2 2 2 2 5 9 10 9 6 5 5 5 Clouds SC FW CL CL CL FW FW FW CL CL CL FW FW FW SC FW FW SC SC B1 PoP 12hr 0 0 0 0 10 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S Heat index 82 85 Max heat 83 83 85 85 Date 08/24 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 Thu 08/28/25 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 88 73 87 68 83 64 82 65 84 Temp 86 78 76 75 85 76 71 70 80 73 68 67 79 72 68 68 82 74 Dewpt 65 66 67 65 59 56 54 54 52 51 53 51 49 49 52 52 51 53 PWind dir S SW W W W NW NW NW NW Wind char GN LT LT LT GN LT LT LT LT Avg clouds B1 B2 B2 B1 SC SC FW FW FW SC FW FW FW SC FW FW FW SC PoP 12hr 40 50 20 5 5 0 0 0 5 Rain shwrs S C C C S S Tstms S S $$ WVZ052-220800- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 1037 PM EDT Thu Aug 21 2025 Date 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 61 83 59 83 64 Temp 66 64 63 65 74 80 80 73 66 63 60 64 75 81 80 75 70 68 66 68 Dewpt 62 62 60 61 60 58 58 58 57 57 56 57 61 62 62 61 61 61 61 63 RH 87 93 90 87 62 47 47 59 73 81 87 78 62 53 54 62 73 78 84 84 Wind dir N N N N NE NE E SE S S S S S S S S S S S S Wind spd 2 2 2 2 3 3 2 2 2 3 3 2 6 10 11 9 9 5 5 5 Clouds SC SC SC FW FW FW FW CL CL FW FW FW FW SC SC SC SC B1 B2 B2 PoP 12hr 0 0 0 10 30 QPF 12hr 0 0 0 0 0.01 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C Heat index 81 81 82 81 Max heat 81 81 82 82 Date 08/24 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 Thu 08/28/25 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 83 62 80 56 76 52 75 52 78 Temp 79 73 66 65 77 70 61 60 74 67 57 57 73 66 56 57 75 68 Dewpt 67 67 64 61 55 53 52 52 50 49 50 50 47 48 50 50 50 52 PWind dir S SW W W W NW NW NW NW Wind char LT LT GN LT GN LT LT LT LT Avg clouds B2 B2 B1 SC FW FW FW FW FW SC FW FW FW SC FW FW FW SC PoP 12hr 70 30 5 0 5 0 0 0 0 Rain shwrs C L C Tstms C C $$ VAZ506-220800- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 1037 PM EDT Thu Aug 21 2025 Date 08/21/25 Fri 08/22/25 Sat 08/23/25 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 62 83 61 83 67 Temp 66 65 63 65 74 80 80 73 67 63 62 64 75 81 80 74 71 68 67 68 Dewpt 64 63 62 63 62 60 58 60 58 57 57 60 64 64 63 63 64 65 64 66 RH 93 93 97 93 66 51 47 64 73 81 84 87 69 56 56 69 79 90 90 93 Wind dir N N N N N N N SE SE S S S S S S SE S S S S Wind spd 4 3 3 3 4 4 4 3 3 3 2 3 5 9 10 9 8 5 5 5 Clouds SC SC SC FW FW FW FW FW FW CL FW FW FW FW FW FW SC SC B1 B1 PoP 12hr 0 0 0 0 20 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S Heat index 81 81 83 81 Max heat 81 82 83 83 Date 08/24 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 Thu 08/28/25 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 85 65 82 60 78 56 76 55 79 Temp 81 74 69 67 79 72 64 62 75 69 60 60 73 67 59 59 76 69 Dewpt 70 70 68 66 62 57 54 56 55 54 53 53 52 52 51 52 54 54 PWind dir S SW NW NW W NW NW NW NW Wind char LT LT GN LT GN LT LT LT LT Avg clouds B1 B2 B2 SC FW FW FW FW SC SC FW FW FW SC FW FW FW FW PoP 12hr 50 40 10 5 5 0 0 0 5 Rain shwrs S C C S Tstms S S $$ VAZ037-220800- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 1037 PM EDT Thu Aug 21 2025 Date 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 63 81 61 82 64 Temp 67 64 63 65 74 78 79 73 68 64 62 64 74 79 80 74 69 66 65 67 Dewpt 63 63 62 63 63 61 61 62 61 59 59 59 62 62 62 62 62 62 62 64 RH 87 97 97 93 69 56 54 68 78 84 90 84 66 56 54 66 78 87 90 90 Wind dir N N NW N NE NE E E E SE S S S S S S S S S S Wind spd 4 2 2 2 3 4 5 3 1 1 1 1 5 8 9 5 4 3 2 3 Clouds FW SC SC SC SC SC FW FW FW SC SC SC SC SC SC SC SC SC SC B1 PoP 12hr 0 0 5 10 20 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C Heat index 81 Max heat 81 Date 08/24 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 Thu 08/28/25 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 83 63 81 57 77 54 76 54 78 Temp 80 73 67 66 80 72 61 60 75 68 58 57 74 67 58 58 76 68 Dewpt 66 66 65 63 57 55 53 54 52 52 51 51 48 50 51 51 52 53 PWind dir S W NW NW W NW NW NW W Wind char LT LT LT LT LT LT LT LT LT Avg clouds B1 B2 B1 SC FW FW FW SC SC SC FW SC FW FW FW FW FW FW PoP 12hr 60 30 10 5 5 0 5 5 5 Rain shwrs C L C Tstms C $$ MDZ003-220800- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 1037 PM EDT Thu Aug 21 2025 Date 08/21/25 Fri 08/22/25 Sat 08/23/25 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 61 83 60 85 65 Temp 66 64 61 64 75 80 80 74 66 63 61 64 75 81 80 75 71 68 66 67 Dewpt 63 62 60 61 61 59 58 59 58 56 55 57 63 64 63 61 61 62 62 64 RH 90 93 97 90 62 49 47 59 75 78 81 78 66 56 56 62 71 81 87 90 Wind dir N N N N N NE NE SE SE S S S S S S S S S S S Wind spd 3 3 3 2 3 3 3 3 2 3 3 3 6 10 11 9 9 6 5 5 Clouds SC SC FW FW CL FW FW CL CL CL FW FW FW SC FW SC SC B1 B1 B2 PoP 12hr 0 0 0 10 40 QPF 12hr 0 0 0 0 0.02 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C Tstms S S Heat index 81 81 83 81 Max heat 81 81 83 83 Date 08/24 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 Thu 08/28/25 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 63 81 57 77 53 76 52 79 Temp 78 73 67 65 78 70 60 60 74 67 57 57 73 66 56 56 75 68 Dewpt 69 68 66 63 57 53 53 54 52 51 50 51 50 49 50 50 51 51 PWind dir S SW W W W NW NW NW NW Wind char LT LT GN LT GN LT LT LT LT Avg clouds B2 B2 B1 SC FW FW FW FW FW SC FW FW FW SC FW FW FW SC PoP 12hr 70 50 5 5 5 0 0 0 0 Rain shwrs C L C Tstms S C C $$ MDZ017-220800- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 1037 PM EDT Thu Aug 21 2025 Date 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 67 80 66 81 70 Temp 71 68 67 70 74 78 79 73 70 68 67 70 77 79 79 75 73 72 71 74 Dewpt 64 63 60 60 57 56 56 58 60 60 60 64 63 63 64 65 66 66 66 69 RH 79 84 78 71 55 47 45 59 71 76 78 81 62 58 60 71 79 81 84 84 Wind dir N N N N N N N E SE S S S SE SE SE SE S S S S Wind spd 11 10 10 10 10 8 5 4 5 4 3 3 5 10 11 10 10 8 6 5 Clouds B1 FW CL CL CL CL CL CL CL CL CL CL CL FW FW FW FW FW FW FW PoP 12hr 0 0 0 0 5 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Date 08/24 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 Thu 08/28/25 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 83 70 84 66 79 63 77 63 80 Temp 81 76 72 73 82 76 70 70 76 72 67 67 75 71 66 67 77 72 Dewpt 69 69 69 69 65 63 59 59 58 58 56 57 54 55 56 58 55 56 PWind dir S S NW NW NW NW NW NW N Wind char GN LT LT LT LT LT LT LT LT Avg clouds SC SC B1 B1 SC SC FW FW FW SC SC SC FW FW FW FW FW FW PoP 12hr 20 30 20 5 5 5 5 5 5 Rain shwrs S C C S S $$ WVZ502-220800- Petersburg WV 38.99N 79.15W Elev. 963 ft 1037 PM EDT Thu Aug 21 2025 Date 08/21/25 Fri 08/22/25 Sat 08/23/25 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 61 84 61 87 63 Temp 65 63 61 62 73 79 81 73 66 63 62 63 77 83 82 74 68 65 64 65 Dewpt 64 63 61 62 65 65 65 65 64 61 60 61 67 67 67 66 64 63 62 64 RH 97100100100 76 62 58 76 93 93 93 93 71 59 61 76 87 93 93 97 Wind dir N NW W N NE E E E S S S S S S S S S S S S Wind spd 2 1 1 1 2 2 3 3 2 2 2 2 3 5 5 5 5 4 3 2 Clouds B1 B2 B2 B2 B1 SC FW SC SC SC SC SC FW B1 B1 SC B1 B1 B2 B2 PoP 12hr 0 0 5 30 40 QPF 12hr 0 0 0 0.02 0.06 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S S C C L Tstms S S S S C S Heat index 83 86 85 Max heat 83 86 87 Date 08/24 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 Thu 08/28/25 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 84 57 79 52 75 49 75 47 79 Temp 79 71 62 59 76 68 56 55 73 64 52 51 72 63 51 51 74 65 Dewpt 68 67 62 58 55 54 51 50 51 51 48 48 48 50 47 46 50 52 PWind dir SW W W W W W NW W NW Wind char LT LT LT LT LT LT LT LT LT Avg clouds B2 B2 B1 SC FW FW FW SC SC SC FW FW FW FW FW FW FW FW PoP 12hr 80 30 10 5 5 0 0 0 5 Rain shwrs L D C Tstms S C S $$ MDZ014-220800- Annapolis MD 38.99N 76.49W Elev. 7 ft 1037 PM EDT Thu Aug 21 2025 Date 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 67 79 66 80 69 Temp 70 68 67 68 73 76 77 74 70 68 67 69 75 78 78 75 73 72 71 72 Dewpt 64 63 61 60 56 55 55 57 61 61 62 62 62 62 62 64 67 67 67 67 RH 81 84 81 76 55 48 47 55 73 78 84 78 64 58 58 69 81 84 87 84 Wind dir N N N N N NE E SE S S SW SW S S S S S S S S Wind spd 9 8 8 6 8 8 5 3 4 4 3 2 6 10 12 10 10 8 6 6 Clouds SC FW CL CL CL FW CL CL CL CL CL FW FW FW FW FW FW FW SC SC PoP 12hr 0 0 0 0 10 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S Coast Flood Y Y Y Y Y Y Y Y A A A Date 08/24 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 Thu 08/28/25 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 81 70 81 65 76 62 75 62 77 Temp 79 77 72 72 79 76 69 68 74 72 67 65 73 71 66 66 75 73 Dewpt 67 68 69 67 62 59 58 57 55 54 55 55 52 52 56 56 54 56 PWind dir S SW NW NW W NW NW NW N Wind char GN LT LT LT GN LT LT LT LT Avg clouds B1 B1 B2 B1 SC SC FW FW SC SC FW FW FW FW FW FW FW FW PoP 12hr 30 50 20 5 5 0 0 5 5 Rain shwrs S C C C S S $$