Point Forecast Matrices
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
549 FOUS51 KLWX 210837 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 437 AM EDT Thu Aug 21 2025 VAZ054-212000- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 437 AM EDT Thu Aug 21 2025 Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 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 76 66 83 65 84 Temp 74 69 71 73 74 72 70 69 66 67 76 80 81 75 71 68 66 67 77 82 81 76 Dewpt 71 65 64 64 63 62 62 62 61 60 55 53 54 56 56 58 58 60 60 58 60 62 RH 90 87 79 73 69 71 76 78 84 78 48 39 39 52 59 70 75 78 56 44 49 62 Wind dir NE NE N NE N NE N N N N N N E SE SE S S S S S S SE Wind spd 10 12 12 13 12 9 8 6 6 6 6 5 6 6 5 5 4 4 6 10 12 11 Clouds OV OV OV OV B2 B1 B1 FW FW FW FW FW CL FW CL CL FW FW FW FW FW FW PoP 12hr 10 0 0 0 5 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S Heat index 80 81 82 82 Max heat 80 81 82 82 Date Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 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 85 69 84 64 80 61 78 Temp 72 71 82 76 73 71 81 76 69 65 77 72 65 63 75 71 Dewpt 64 65 65 67 68 67 61 58 56 54 52 51 52 52 49 49 PWind dir S S S W NW NW NW NW Wind char GN GN LT GN GN GN LT GN Avg clouds FW SC B1 B2 B2 B1 SC SC SC FW FW SC FW FW FW SC PoP 12hr 10 50 40 20 5 0 0 5 Rain shwrs C C C S S S Tstms S S S $$ MDZ013-212000- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 437 AM EDT Thu Aug 21 2025 Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 75 63 83 63 83 Temp 71 66 69 71 72 71 68 66 63 65 75 80 80 74 68 66 63 66 77 81 80 75 Dewpt 70 65 66 67 66 64 63 61 59 59 56 55 56 58 58 58 58 60 61 62 62 64 RH 97 97 90 87 81 79 84 84 87 81 52 42 44 57 70 75 84 81 58 53 54 69 Wind dir NE NE NE NE NE N N N N N N NE E SE S S SW SW S S S S Wind spd 8 11 14 13 12 9 5 5 5 5 5 5 4 2 2 2 2 2 5 9 10 9 Wind gust 19 21 23 20 18 Clouds OV B2 B2 OV B2 B1 SC FW FW CL CL FW FW FW CL CL CL CL CL FW FW FW PoP 12hr 5 0 0 0 0 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S Heat index 80 80 82 81 Max heat 80 81 82 82 Coast Flood Y Date Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 68 83 68 84 62 79 59 77 Temp 70 70 81 75 70 69 81 75 67 64 77 71 63 62 75 70 Dewpt 65 66 69 69 69 69 63 60 56 56 54 53 53 53 51 52 PWind dir S S SW W NW W NW NW Wind char LT LT LT LT LT GN LT LT Avg clouds FW SC B1 B2 B2 B1 SC B1 FW FW FW FW FW FW FW SC PoP 12hr 10 50 50 30 5 0 0 0 Rain shwrs C C C C S C Tstms S S S $$ MDZ011-212000- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 437 AM EDT Thu Aug 21 2025 Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 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 79 68 88 69 88 Temp 75 69 73 75 76 75 74 72 69 68 79 83 85 79 76 73 70 70 82 85 85 81 Dewpt 69 63 63 64 63 62 61 60 59 57 52 52 53 55 57 58 58 59 58 58 59 60 RH 82 81 71 69 64 64 64 66 70 68 39 34 33 44 52 59 66 68 44 40 41 49 Wind dir NE NE NE NE NE N N N N N N NE NE SE S S SW SW S S S S Wind spd 8 11 14 13 12 9 5 5 5 5 5 5 5 2 2 2 2 2 5 9 10 10 Wind gust 19 21 23 20 18 Clouds OV B2 B2 OV B2 B1 FW FW CL CL CL FW FW FW CL CL CL CL CL FW FW FW PoP 12hr 5 0 0 0 0 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S Heat index 82 85 82 Max heat 82 83 84 85 Date Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 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 88 72 88 66 84 63 82 Temp 76 73 85 80 77 72 85 80 72 67 81 76 69 64 79 74 Dewpt 64 64 65 66 67 67 61 58 55 54 52 51 52 52 49 49 PWind dir S S S W NW W NW NW Wind char LT GN LT LT LT GN LT LT Avg clouds FW SC B1 B2 B2 B1 SC B1 FW FW FW SC FW FW FW SC PoP 12hr 20 50 60 30 5 0 0 0 Rain shwrs S C C L C S C Tstms S S S $$ WVZ052-212000- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 437 AM EDT Thu Aug 21 2025 Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 74 60 83 59 84 Temp 69 65 67 70 72 70 66 64 62 64 74 80 80 73 66 62 60 63 76 81 81 75 Dewpt 68 63 62 64 64 63 62 61 60 61 59 58 57 58 57 56 55 56 60 61 61 62 RH 97 93 84 81 76 78 87 90 93 90 59 47 45 59 73 81 84 78 58 51 51 64 Wind dir N NE NE N NE NE N N N N N N NE E SE S S S S S S S Wind spd 6 9 10 11 10 5 3 2 2 2 3 4 3 2 2 2 2 2 6 10 11 9 Clouds OV B2 B2 B2 B2 B1 SC SC SC FW FW FW FW CL CL CL FW FW FW FW SC SC PoP 12hr 20 0 0 0 20 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S S Heat index 81 80 82 82 Max heat 81 81 82 83 Date Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 64 82 63 81 55 76 52 75 Temp 68 67 78 72 65 66 78 71 60 60 74 67 57 57 73 66 Dewpt 61 63 67 67 65 63 57 54 52 52 51 51 50 50 48 49 PWind dir S S SW W W W W NW Wind char LT LT LT LT LT GN LT LT Avg clouds SC B1 B2 B2 B1 SC SC SC FW FW FW SC FW FW FW SC PoP 12hr 30 70 40 20 0 0 0 5 Rain shwrs S C C L C S Tstms S S C C $$ VAZ506-212000- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 437 AM EDT Thu Aug 21 2025 Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 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 74 62 83 61 84 Temp 71 66 68 71 72 70 67 65 63 65 74 80 80 74 67 64 61 64 75 81 81 75 Dewpt 71 65 67 68 67 66 65 63 62 63 62 61 59 59 58 57 57 59 63 63 63 63 RH 100 97 97 90 84 87 93 93 97 93 66 52 49 59 73 78 87 84 66 54 54 66 Wind dir NE N N N N N N N N N N N N E S S S S S S S S Wind spd 6 10 12 12 11 8 5 4 4 4 5 4 4 3 3 2 2 3 5 9 10 9 Wind gust 23 Clouds OV OV OV B2 B2 B1 SC SC SC SC FW FW FW FW FW CL FW FW FW FW FW FW PoP 12hr 10 0 0 0 5 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S Heat index 81 81 82 82 Max heat 81 82 82 83 Date Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 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 82 59 78 56 76 Temp 69 69 80 74 69 68 81 73 64 62 76 69 60 59 74 67 Dewpt 64 66 71 70 69 67 64 58 55 55 55 54 52 53 52 52 PWind dir S S SW NW NW NW NW NW Wind char LT LT LT LT LT GN LT LT Avg clouds SC SC B1 B2 B2 SC SC SC FW FW FW SC FW FW FW SC PoP 12hr 20 60 40 20 5 0 0 5 Rain shwrs S C L C S S Tstms S S S $$ VAZ037-212000- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 437 AM EDT Thu Aug 21 2025 Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 78 62 82 61 83 Temp 71 69 72 75 75 71 67 65 63 65 74 79 80 74 67 64 62 64 75 80 80 75 Dewpt 70 68 67 66 64 63 64 63 62 62 63 61 61 61 61 60 58 59 62 62 62 62 RH 97 97 84 74 69 76 90 93 97 90 69 54 52 64 81 87 87 84 64 54 54 64 Wind dir NE NE NE NE NE NE N N N N NE NE E E E SE S S S S S S Wind spd 5 9 11 12 10 8 5 3 2 2 4 4 5 3 1 1 1 1 5 8 9 6 Wind gust 16 19 21 18 Clouds OV B2 B2 B1 B1 SC SC SC SC SC SC SC SC FW FW SC SC SC SC SC SC FW PoP 12hr 20 0 0 5 10 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S Obvis PF PF Heat index 81 81 81 Max heat 81 81 82 Date Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 64 82 64 82 58 78 54 77 Temp 67 66 80 73 67 66 81 72 61 60 76 69 59 57 74 67 Dewpt 62 64 66 67 66 65 58 56 53 54 50 51 51 51 48 51 PWind dir S S W W NW NW NW NW Wind char LT LT LT LT LT LT LT LT Avg clouds SC SC B1 B2 B1 SC SC FW FW SC FW SC FW SC FW SC PoP 12hr 20 60 30 10 5 0 0 5 Rain shwrs S C L C Tstms C S $$ MDZ003-212000- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 437 AM EDT Thu Aug 21 2025 Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 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 75 61 83 60 84 Temp 68 64 68 71 72 70 66 64 61 64 75 80 80 74 65 62 60 64 76 82 81 76 Dewpt 67 63 64 65 64 63 64 63 60 61 60 59 58 59 57 56 55 57 62 64 63 62 RH 97 97 87 81 76 78 93 97 97 90 60 49 47 59 75 81 84 78 62 55 54 62 Wind dir NE NE NE NE NE NE N N N N N N NE E SE S S S S S S S Wind spd 6 9 10 11 10 6 4 3 3 3 3 4 3 3 2 3 3 3 5 10 10 9 Clouds OV B2 B2 B2 B2 SC SC FW FW FW CL FW CL CL CL CL CL CL FW FW FW SC PoP 12hr 10 0 0 0 10 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S Obvis PF Heat index 81 81 83 82 Max heat 81 81 83 83 Date Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 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 83 64 82 55 76 52 75 Temp 68 67 78 72 66 66 79 71 60 60 74 67 57 57 73 66 Dewpt 63 64 70 68 66 65 59 55 53 54 53 51 51 51 50 51 PWind dir S S S W W W W NW Wind char LT LT LT LT LT GN LT LT Avg clouds SC B1 B2 B2 B1 B1 SC SC FW FW FW SC FW FW FW SC PoP 12hr 40 70 50 20 0 5 0 5 Rain shwrs S C C L C S Tstms S S C C S $$ MDZ017-212000- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 437 AM EDT Thu Aug 21 2025 Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 78 67 80 66 81 Temp 73 73 74 75 74 72 70 69 67 70 74 77 78 73 70 69 67 70 77 79 79 75 Dewpt 72 70 69 69 67 66 64 63 61 60 58 57 57 58 59 60 61 64 63 63 64 65 RH 97 90 84 82 79 81 81 81 81 71 57 50 48 59 68 73 81 81 62 58 60 71 Wind dir NE NE N N N N N N N N N N N E SE S S S S SE SE S Wind spd 13 18 20 21 18 14 13 11 10 10 10 9 6 3 4 4 4 3 5 10 11 10 Wind gust 24 29 27 25 23 21 Clouds B2 B2 B2 OV OV B2 B1 SC FW FW CL CL CL CL CL CL CL CL CL CL FW FW PoP 12hr 10 0 0 0 0 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S Date Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 69 83 71 84 66 80 63 79 Temp 72 74 82 77 73 74 83 77 70 69 78 74 67 67 76 72 Dewpt 66 68 68 69 70 70 67 66 59 59 56 56 56 57 54 54 PWind dir S S S W NW NW NW NW Wind char GN GN LT LT LT LT LT LT Avg clouds FW FW SC B1 B1 B1 SC B1 SC FW FW FW FW SC FW SC PoP 12hr 5 30 40 30 10 0 0 5 Rain shwrs S C C C S C Tstms S $$ WVZ502-212000- Petersburg WV 38.99N 79.15W Elev. 963 ft 437 AM EDT Thu Aug 21 2025 Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 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 77 60 84 60 87 Temp 68 65 69 72 75 69 64 62 62 62 72 80 81 73 65 62 60 63 78 83 82 74 Dewpt 67 65 67 67 67 66 64 62 62 62 65 64 64 64 62 60 59 61 66 66 67 67 RH 97100 93 84 76 90100100100100 79 58 56 73 90 93 96 93 67 57 61 79 Wind dir N N NE NE NE NE NE NE NE N NE NE E E S S S S S S S S Wind spd 2 4 5 6 5 4 2 2 2 1 2 2 4 2 2 2 2 2 3 5 5 5 Clouds OV OV OV B2 B1 SC B1 B2 B2 B2 SC SC FW FW FW FW FW FW FW B1 B1 B1 PoP 12hr 30 5 5 5 30 QPF 12hr 0.03 0 0 0 0.02 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S C C C Tstms S S S Obvis PF PF PF PF PF Heat index 82 83 85 85 Max heat 82 83 85 86 Date Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 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 63 83 59 79 52 74 48 74 Temp 65 64 79 72 62 60 76 67 55 54 72 64 52 52 72 63 Dewpt 63 64 69 67 62 59 57 54 51 50 51 51 48 48 48 51 PWind dir S SW SW W W W W W Wind char LT LT LT LT LT LT LT LT Avg clouds B1 B2 B2 B2 B1 SC SC FW FW SC SC FW FW FW SC SC PoP 12hr 50 80 30 10 0 5 0 5 Rain shwrs C C C D C Tstms S S S C S $$ MDZ014-212000- Annapolis MD 38.99N 76.49W Elev. 7 ft 437 AM EDT Thu Aug 21 2025 Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 74 66 79 66 80 Temp 73 69 70 71 72 72 70 69 67 68 74 78 77 74 71 69 67 69 75 78 78 76 Dewpt 72 67 67 66 64 63 64 62 61 59 56 55 55 57 60 60 61 61 62 62 62 64 RH 97 93 90 84 76 73 81 78 81 73 53 45 47 55 68 73 81 76 64 58 58 66 Wind dir NE NE NE NE NE NE N N N N N N NE SE S S SW SW S S S S Wind spd 10 12 17 17 14 11 10 9 9 8 9 8 5 3 3 4 3 3 6 10 12 10 Wind gust 20 27 23 21 Clouds OV OV OV OV B2 B2 SC FW CL CL CL CL CL CL CL CL CL FW CL FW FW FW PoP 12hr 5 0 0 0 0 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S Coast Flood Y Date Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 69 81 70 82 65 77 62 76 Temp 73 72 80 77 73 72 80 76 70 67 75 74 67 65 74 72 Dewpt 66 66 67 68 70 68 64 61 59 57 54 54 56 55 52 52 PWind dir S S SW W NW W NW NW Wind char GN GN LT LT LT GN LT LT Avg clouds FW SC B1 B2 B2 B1 SC B1 SC FW FW FW FW FW FW SC PoP 12hr 10 40 60 30 5 0 0 0 Rain shwrs S C L C S C Tstms S S $$