Point Forecast Matrices
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
412 FOUS51 KLWX 200837 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 437 AM EDT Wed Aug 20 2025 VAZ054-202000- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 437 AM EDT Wed Aug 20 2025 Date Wed 08/20/25 Thu 08/21/25 Fri 08/22/25 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 87 72 79 66 83 Temp 72 72 77 83 84 79 77 75 74 73 74 76 76 73 71 69 67 68 75 79 81 76 Dewpt 69 70 72 71 71 72 72 72 70 70 68 67 65 64 62 61 60 60 57 56 56 57 RH 90 93 85 67 65 79 85 90 87 90 82 74 69 73 73 76 78 76 54 45 42 52 Wind dir NE NE E SE SE E E NE NE NE NE NE NE N N N N N N NE E E Wind spd 6 5 5 6 9 11 11 10 12 12 14 16 16 13 11 10 11 10 9 8 6 6 Clouds OV B2 B2 SC SC B1 B1 B1 B2 B2 B2 B2 B2 B2 SC SC FW FW FW FW FW FW PoP 12hr 30 40 30 5 0 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Drizzle O Rain shwrs S S C S C C C C Tstms S S S Obvis PF PF Heat index 88 89 81 Max heat 88 90 81 Date Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 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 66 84 70 85 69 84 63 79 Temp 69 68 81 77 72 71 82 76 71 70 81 75 67 65 76 72 Dewpt 60 61 60 62 64 66 67 69 67 66 61 58 56 55 53 53 PWind dir SE S S S SW NW NW NW Wind char LT GN GN GN LT GN LT GN Avg clouds FW FW SC SC SC B1 B1 B1 B1 SC SC SC FW FW FW SC PoP 12hr 0 5 20 50 40 20 5 0 Rain shwrs S S C C S S Tstms C S S $$ MDZ013-202000- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 437 AM EDT Wed Aug 20 2025 Date Wed 08/20/25 Thu 08/21/25 Fri 08/22/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 85 68 77 63 82 Temp 70 70 75 81 82 77 74 73 71 69 73 76 75 71 68 66 64 66 74 79 79 74 Dewpt 69 70 74 74 74 74 74 72 70 69 70 70 68 66 63 61 59 60 59 58 58 60 RH 97100 97 79 77 90100 97 97100 90 82 79 84 84 84 84 81 59 49 49 62 Wind dir E NE E E SE E E NE NE NE NE NE NE N N N N N N NE E E Wind spd 4 4 5 5 6 8 8 8 9 11 13 13 14 11 9 8 8 9 8 6 5 3 Clouds OV B2 B2 B1 B1 B1 B2 OV B2 B2 B2 B2 B2 B2 SC SC FW FW CL FW FW FW PoP 12hr 40 40 20 0 0 QPF 12hr 0.01 0.53 0 0 0 Snow 12hr 00-00 00-00 00-00 Drizzle O Rain shwrs S C C C C S S S S Tstms S C C S Obvis PF PF PF Heat index 86 88 Max heat 86 88 81 Coast Flood Y Date Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 63 83 68 84 67 83 61 79 Temp 66 67 81 75 70 70 82 75 69 69 81 73 65 64 77 71 Dewpt 60 63 64 65 65 68 70 71 69 67 64 61 56 56 55 55 PWind dir S S S S SW W NW NW Wind char LT LT LT GN LT LT LT LT Avg clouds FW FW FW FW SC B1 B1 B1 B1 B1 SC SC FW FW FW SC PoP 12hr 0 0 20 50 50 20 10 0 Rain shwrs S S C C C S S Tstms S S S $$ MDZ011-202000- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 437 AM EDT Wed Aug 20 2025 Date Wed 08/20/25 Thu 08/21/25 Fri 08/22/25 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 72 81 68 87 Temp 75 73 79 83 85 81 79 78 75 72 77 79 79 76 74 72 70 68 79 82 84 80 Dewpt 68 67 70 71 71 72 72 71 69 67 66 66 64 62 61 60 59 58 55 54 54 56 RH 79 81 74 67 63 74 79 79 82 84 69 64 60 62 64 66 68 70 44 38 36 44 Wind dir E E E SE SE E E NE NE NE NE NE NE N N N N N N NE NE E Wind spd 4 4 5 6 8 8 8 8 9 11 13 13 14 11 9 8 8 9 9 6 6 3 Clouds OV B2 B2 B1 B1 B1 B2 B2 B2 B2 B2 OV B2 B1 SC SC FW FW CL FW FW FW PoP 12hr 50 50 20 0 0 QPF 12hr 0.03 0.32 0 0 0 Snow 12hr 00-00 00-00 00-00 Drizzle O Rain shwrs S C C C C S S S S Tstms S C C S Obvis PF Heat index 88 90 85 80 Max heat 88 90 84 81 83 Date Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 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 88 72 88 71 87 66 83 Temp 73 70 86 81 77 72 85 79 76 71 84 78 72 66 80 76 Dewpt 60 60 60 61 64 66 68 68 67 65 61 58 56 54 53 52 PWind dir S S S S SW W NW NW Wind char LT LT LT GN LT LT LT GN Avg clouds FW FW FW SC SC SC B1 B2 B2 B1 SC SC FW FW FW SC PoP 12hr 0 0 20 50 50 20 10 0 Rain shwrs S S C C C S Tstms S S S $$ WVZ052-202000- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 437 AM EDT Wed Aug 20 2025 Date Wed 08/20/25 Thu 08/21/25 Fri 08/22/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 84 66 76 61 82 Temp 67 68 74 80 80 77 72 70 69 68 71 74 74 70 67 64 62 64 74 79 79 73 Dewpt 65 65 67 69 70 70 70 69 67 67 66 66 65 64 63 62 60 60 60 58 57 59 RH 93 90 79 69 72 79 93 97 93 97 84 76 74 81 87 93 93 87 62 49 47 62 Wind dir SE SE SE SE SE E NE NE NE NE NE N NE NE N N N N N NE E E Wind spd 4 4 5 5 5 6 5 5 8 9 10 11 12 9 6 5 5 4 5 5 5 2 Clouds OV B2 B2 B1 B2 B1 B2 B2 B2 B2 B2 B2 B2 B1 B1 SC SC FW FW FW FW CL PoP 12hr 50 60 40 5 0 QPF 12hr 0.01 0.30 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C L C C C C S S Tstms S C C S Obvis PF PF PF PF PF Heat index 83 83 Max heat 83 85 80 Date Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 59 85 64 84 61 81 55 76 Temp 62 64 81 76 67 67 81 74 66 65 78 70 59 59 74 68 Dewpt 57 58 62 63 63 64 66 66 64 61 56 54 52 52 50 50 PWind dir SE S S S SW W W NW Wind char LT LT LT LT LT LT LT GN Avg clouds FW FW SC SC SC B1 B1 B2 B1 SC FW SC FW FW FW FW PoP 12hr 0 20 30 60 30 20 5 5 Rain shwrs S S C C L C S Tstms S S C S S $$ VAZ506-202000- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 437 AM EDT Wed Aug 20 2025 Date Wed 08/20/25 Thu 08/21/25 Fri 08/22/25 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 87 69 78 63 82 Temp 69 69 76 83 84 79 74 73 72 70 74 76 75 71 68 66 64 65 74 79 79 73 Dewpt 69 69 74 74 73 74 73 73 72 70 72 71 70 67 65 63 62 63 64 63 61 61 RH 100100 94 74 70 85 97100100100 93 85 84 87 90 90 93 93 71 58 54 66 Wind dir E E E SE SE E E NE NE NE N N N N N N N N N N E E Wind spd 3 2 3 4 5 8 6 6 8 10 12 12 13 10 8 6 8 6 8 5 5 4 Clouds OV B2 B1 SC SC B1 B1 B1 B2 OV B2 B2 B2 B1 B1 SC SC FW FW FW FW FW PoP 12hr 30 40 30 5 0 QPF 12hr 0 0.27 0.01 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C C C C C C Tstms S C S Obvis PF PF PF Heat index 90 90 Max heat 90 91 81 Date Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 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 62 84 67 85 65 82 59 78 Temp 65 65 81 76 70 69 82 74 68 67 80 71 63 61 76 68 Dewpt 60 63 65 65 66 68 72 71 68 66 63 60 56 56 56 54 PWind dir SE S S S SW NW NW NW Wind char LT LT LT LT LT LT LT GN Avg clouds FW FW SC SC SC B1 B1 B2 B1 SC SC SC FW FW FW SC PoP 12hr 0 5 20 60 40 20 5 0 Rain shwrs S S L C S S Tstms C S S $$ VAZ037-202000- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 437 AM EDT Wed Aug 20 2025 Date Wed 08/20/25 Thu 08/21/25 Fri 08/22/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 86 69 79 63 81 Temp 68 67 75 83 84 78 74 71 70 70 74 78 78 73 68 66 65 65 73 79 79 73 Dewpt 68 66 68 69 69 70 70 70 70 70 69 68 66 65 65 63 62 62 62 61 60 61 RH 100 97 79 63 61 76 87 97100100 84 71 67 76 90 90 90 90 68 54 52 66 Wind dir N NE E SE E E NE NE NE NE NE NE NE N N N N N NE NE E E Wind spd 1 1 2 4 4 8 6 6 8 10 11 12 12 10 8 6 6 5 5 5 5 3 Clouds OV B2 SC FW SC B1 B1 B1 B1 B1 B2 B1 B1 SC SC SC B1 SC SC SC FW FW PoP 12hr 30 40 40 10 5 QPF 12hr 0 0 0.04 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C S S C C C C Tstms S S S Obvis PF PF PF PF Heat index 87 88 Max heat 87 88 81 Date Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 62 82 65 84 64 82 57 78 Temp 65 65 80 75 67 67 81 74 67 65 80 72 61 59 75 69 Dewpt 60 60 63 63 65 66 67 67 66 64 59 56 54 54 51 52 PWind dir E S S S SW W NW NW Wind char LT LT LT LT LT LT LT LT Avg clouds SC SC SC SC SC B1 B1 B2 B1 SC FW SC FW FW FW SC PoP 12hr 5 20 20 60 30 20 5 0 Rain shwrs S S S S L C S Tstms C S $$ MDZ003-202000- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 437 AM EDT Wed Aug 20 2025 Date Wed 08/20/25 Thu 08/21/25 Fri 08/22/25 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 84 66 77 61 82 Temp 67 67 74 80 80 76 72 71 68 68 71 74 74 71 67 64 62 64 74 79 79 73 Dewpt 66 66 70 72 71 72 71 70 67 67 68 68 67 65 64 62 61 61 62 61 60 61 RH 97 97 87 77 74 87 97 97 97 97 90 82 79 81 90 93 97 90 66 54 52 66 Wind dir SE SE S SE SE E NE NE NE NE NE NE NE NE N N N N NE NE E E Wind spd 4 4 4 5 5 8 8 8 8 9 11 12 12 9 8 6 6 5 5 5 4 3 Clouds OV B1 B2 B2 B2 B1 B2 B2 B1 B1 B2 B2 B1 SC SC SC SC FW FW FW FW CL PoP 12hr 50 60 30 5 0 QPF 12hr 0.01 0.19 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C C L C C C C S S Tstms S C C C Obvis PF PF PF PF Heat index 84 83 Max heat 84 85 81 Date Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 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 60 84 66 85 62 81 55 77 Temp 63 65 81 76 68 68 82 74 66 65 78 70 59 59 74 67 Dewpt 57 60 65 64 64 66 69 67 65 64 58 54 53 54 53 51 PWind dir SE S S S SW W W NW Wind char LT LT LT LT LT LT LT GN Avg clouds FW FW SC SC SC B1 B1 B2 B1 SC FW SC FW FW FW SC PoP 12hr 0 10 30 70 40 20 5 5 Rain shwrs S C C L C S S Tstms S S C S S $$ MDZ017-202000- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 437 AM EDT Wed Aug 20 2025 Date Wed 08/20/25 Thu 08/21/25 Fri 08/22/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 85 72 79 66 80 Temp 73 75 80 82 82 79 76 74 73 75 77 79 77 73 71 69 68 70 75 77 79 74 Dewpt 72 73 74 75 74 75 74 73 72 73 72 72 70 67 65 64 62 62 61 60 59 60 RH 97 94 82 79 77 88 94 97 97 94 85 79 79 81 81 84 81 76 62 56 50 62 Wind dir E E SE SE SE E E NE NE NE NE N N N N N N N N N N E Wind spd 6 5 5 8 9 11 12 12 14 16 19 20 20 17 16 14 13 14 13 11 10 5 Clouds B2 SC SC B1 FW B1 SC B2 B2 B2 B2 B2 B2 B2 B1 B1 SC FW CL CL CL CL PoP 12hr 30 20 40 5 0 QPF 12hr 0.01 0 0.01 0 0 Snow 12hr 00-00 00-00 00-00 Drizzle S Rain shwrs S C S S S C C C C Tstms S S S Obvis PF PF Heat index 84 89 88 Max heat 89 90 Date Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 67 82 69 83 69 84 64 80 Temp 70 72 80 75 72 73 81 76 71 73 81 75 68 68 77 73 Dewpt 62 65 63 65 66 68 70 70 69 69 67 65 59 59 58 58 PWind dir SE S S S SW NW NW NW Wind char LT LT GN GN LT LT LT LT Avg clouds CL FW FW FW FW SC SC B1 B1 B1 SC B1 SC FW FW FW PoP 12hr 0 0 10 30 50 30 10 0 Rain shwrs S C C C S C Tstms S S $$ WVZ502-202000- Petersburg WV 38.99N 79.15W Elev. 963 ft 437 AM EDT Wed Aug 20 2025 Date Wed 08/20/25 Thu 08/21/25 Fri 08/22/25 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 87 65 79 60 83 Temp 65 65 79 83 81 74 69 68 67 67 71 74 76 70 65 64 62 61 72 79 80 72 Dewpt 64 65 71 73 73 72 69 68 67 67 70 69 68 67 65 63 62 61 65 64 64 65 RH 97100 77 72 77 93100100100100 97 84 76 90100 97100100 79 60 58 79 Wind dir SE SE SE SE S N NE NE NE NE NE NE NE NE NE NE NE NE NE NE E E Wind spd 2 2 2 3 3 4 4 4 4 5 6 8 8 6 4 4 4 3 3 3 4 2 Clouds B2 B1 B1 B2 B2 B1 B1 B2 OV OV B2 B2 B1 B1 B1 B2 B2 B1 SC SC FW FW PoP 12hr 70 50 60 10 10 QPF 12hr 0.36 0.22 0.04 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S L L C C C C L L C C Tstms S C C C S S Obvis PF PF PF PF PF PF Heat index 89 86 82 Max heat 89 89 83 Date Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 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 59 87 62 84 57 79 51 75 Temp 62 62 83 73 65 64 80 72 61 59 76 65 54 54 72 63 Dewpt 60 60 65 68 64 64 68 65 60 59 56 55 51 50 51 51 PWind dir S S SW SW W W W W Wind char LT LT LT LT LT LT LT LT Avg clouds FW SC SC B1 B1 B1 B1 B2 SC SC SC SC FW SC FW FW PoP 12hr 0 40 30 70 30 20 5 5 Rain shwrs C C C C L C S Tstms S S C S S $$ MDZ014-202000- Annapolis MD 38.99N 76.49W Elev. 7 ft 437 AM EDT Wed Aug 20 2025 Date Wed 08/20/25 Thu 08/21/25 Fri 08/22/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 82 71 76 66 79 Temp 72 73 76 80 81 79 76 75 73 73 73 75 74 73 70 69 67 68 73 77 78 75 Dewpt 71 71 73 73 73 73 75 73 72 70 69 69 66 64 64 62 61 60 58 58 57 59 RH 97 93 90 79 77 82 97 94 97 90 87 82 76 73 81 78 81 76 59 52 48 58 Wind dir E E E SE SE E E NE NE NE NE NE NE N N N N N N N NE E Wind spd 6 5 6 9 9 10 10 10 12 12 16 16 17 13 12 11 11 11 11 9 6 4 Wind gust 23 Clouds OV OV B1 SC B1 B1 B1 B2 B2 B2 B2 B2 B2 B2 B1 SC FW FW FW CL CL FW PoP 12hr 40 40 30 5 0 QPF 12hr 0 0.02 0 0 0 Snow 12hr 00-00 00-00 00-00 Drizzle O S Rain shwrs S C C C C S S C C Tstms S C C S Obvis PF PF Heat index 84 86 Max heat 84 86 Coast Flood Y Date Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 66 80 70 82 69 80 65 77 Temp 70 70 78 77 72 72 80 77 72 71 79 75 69 67 75 73 Dewpt 62 63 63 64 66 67 69 69 69 68 64 61 60 58 55 55 PWind dir SE S S S SW W NW NW Wind char LT GN GN GN LT LT LT GN Avg clouds FW FW FW FW SC SC B1 B1 B2 B1 SC B1 SC FW FW FW PoP 12hr 0 0 20 50 60 30 10 0 Rain shwrs S S C L C S C Tstms S S S $$