Point Forecast Matrices
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
141 FOUS51 KLWX 190537 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 137 AM EDT Tue Aug 19 2025 VAZ054-192000- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 137 AM EDT Tue Aug 19 2025 Date Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 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 70 85 72 80 Temp 70 69 71 72 72 72 72 72 71 72 78 81 81 78 75 74 73 72 74 76 76 73 Dewpt 66 66 66 66 67 67 68 69 70 70 72 71 72 72 71 70 70 69 68 66 66 64 RH 87 90 84 81 84 84 87 90 97 93 82 72 74 82 87 87 90 90 82 71 71 73 Wind dir NE NE NE NE E E E E E E SE SE SE E E NE NE NE NE NE NE N Wind spd 6 10 10 10 11 10 9 6 6 5 6 8 10 9 9 8 10 10 12 13 13 11 Clouds OV OV OV OV OV OV B2 B2 B2 B2 B1 B1 B1 B1 B1 B2 B2 B2 B2 B2 B1 B1 PoP 12hr 30 20 40 30 30 QPF 12hr 0.08 0 0.03 0.01 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C S S S C S S S S S S C C C C S S S S C C Tstms S C C S S S Heat index 85 85 Max heat 85 85 Date Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 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 82 66 84 69 86 67 83 Temp 69 67 79 75 69 68 81 77 72 70 82 76 72 69 80 75 Dewpt 62 60 57 58 61 62 61 62 65 66 66 66 65 63 59 57 PWind dir N NE S S S S W NW Wind char GN GN LT GN GN GN LT LT Avg clouds SC FW FW FW FW SC SC SC SC SC SC B1 SC SC FW SC PoP 12hr 10 5 0 10 10 40 20 20 Rain shwrs S C S S Tstms S S S $$ MDZ013-192000- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 137 AM EDT Tue Aug 19 2025 Date Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 73 67 83 68 79 Temp 68 66 69 71 72 70 69 69 70 71 76 80 80 75 73 72 70 69 73 77 75 72 Dewpt 65 65 67 68 69 68 68 68 68 70 73 74 75 74 72 71 69 69 69 69 67 66 RH 90 97 93 90 90 93 97 97 93 97 90 82 85 97 97 97 97100 87 76 76 81 Wind dir NE NE E E E E E E E E SE SE SE E E NE NE NE NE NE NE N Wind spd 5 8 9 9 9 6 5 4 4 4 5 5 8 5 5 5 6 9 11 11 12 9 Clouds OV B2 OV OV OV B2 B2 B2 B2 OV B1 B1 B1 B1 B1 B2 B2 B2 B2 B2 B2 SC PoP 12hr 30 30 40 30 30 QPF 12hr 0.08 0 0.06 0.02 0.01 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S C S S S S S C C C C S S S S C C Tstms C C C S Heat index 84 85 Max heat 84 87 Date Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 63 82 63 83 68 85 65 83 Temp 66 66 79 74 67 67 80 75 70 70 82 76 69 68 80 74 Dewpt 62 61 61 62 62 63 64 65 65 68 69 69 66 64 62 60 PWind dir N NE S S S S SW NW Wind char LT LT LT LT LT LT LT LT Avg clouds SC FW FW FW FW FW FW SC SC SC B1 B1 B1 SC FW SC PoP 12hr 10 5 0 5 20 40 30 20 Rain shwrs S S C C S Tstms S S S $$ MDZ011-192000- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 137 AM EDT Tue Aug 19 2025 Date Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 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 72 87 72 83 Temp 72 70 74 75 76 75 75 75 75 73 81 83 83 80 79 77 75 72 77 79 79 76 Dewpt 64 62 62 64 65 65 66 67 67 69 70 71 72 71 71 70 68 67 66 66 64 63 RH 76 76 66 69 69 71 74 76 76 87 69 67 70 74 77 79 79 84 69 64 60 64 Wind dir NE NE E E E E E E E E SE SE SE E E NE NE NE NE NE NE N Wind spd 5 6 9 9 10 6 5 4 4 4 5 6 8 5 5 5 6 9 11 11 12 9 Clouds B2 B2 OV OV OV OV B2 B2 B2 OV B2 B2 B2 B1 B1 B2 B2 B2 B2 B2 B2 SC PoP 12hr 20 30 40 30 30 QPF 12hr 0 0.08 0.07 0.02 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S C S S S S C C C C C C S S C C Tstms C C C S Heat index 85 88 88 83 Max heat 88 88 83 Date Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 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 87 69 87 72 89 70 87 Temp 72 69 83 79 74 70 84 80 76 72 85 81 75 70 83 79 Dewpt 60 58 57 58 61 60 61 61 64 65 66 66 65 62 59 57 PWind dir N NE S S S S SW W Wind char LT LT LT LT LT LT LT LT Avg clouds SC FW FW FW FW FW FW SC SC SC B1 B1 B1 FW FW SC PoP 12hr 10 5 0 5 20 40 30 20 Rain shwrs S S C C S Tstms S S S S $$ WVZ052-192000- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 137 AM EDT Tue Aug 19 2025 Date Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 73 65 83 66 77 Temp 66 65 69 72 72 70 67 66 66 67 74 80 80 75 70 69 68 68 71 74 74 70 Dewpt 63 63 63 64 64 65 65 66 65 67 68 70 70 70 70 69 67 66 66 66 65 64 RH 90 93 81 76 76 84 93100 97100 82 72 72 84100100 97 93 84 76 74 81 Wind dir NE NE E E E E SE SE SE SE S SE SE E NE NE NE NE NE N NE NE Wind spd 4 4 5 6 8 6 5 4 4 4 5 5 5 4 3 3 5 6 8 9 10 6 Clouds OV B2 OV OV B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 SC PoP 12hr 10 20 60 50 40 QPF 12hr 0 0 0.06 0.09 0.01 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S L L C C C C C C C C Tstms S C C C S Obvis PF PF PF PF Heat index 83 83 Max heat 83 85 Date Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 60 82 60 83 64 83 60 80 Temp 64 64 79 73 63 64 80 75 67 68 81 74 64 64 79 71 Dewpt 62 61 59 60 58 59 62 63 62 63 64 64 61 59 57 55 PWind dir N NE SE S S SW W W Wind char LT LT LT LT LT LT LT LT Avg clouds SC SC FW FW FW FW SC SC SC SC SC B1 SC FW FW FW PoP 12hr 10 5 5 20 20 50 20 10 Rain shwrs S S S S C S Tstms S S C S $$ VAZ506-192000- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 137 AM EDT Tue Aug 19 2025 Date Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 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 73 67 85 68 79 Temp 68 66 69 72 72 70 69 68 69 70 76 81 80 76 73 72 70 70 72 76 75 72 Dewpt 66 66 69 70 69 69 69 68 69 70 75 75 74 74 73 71 70 70 71 71 68 66 RH 93100100 93 90 97100100100100 97 82 82 94100 97100100 97 85 79 81 Wind dir NE NE NE E E E E E E E SE S SE E E NE NE NE N N N N Wind spd 4 5 6 8 9 6 5 3 3 3 4 5 5 5 4 4 5 8 10 10 11 8 Clouds OV B2 OV B2 OV OV OV OV OV B2 B2 B1 B1 B1 B2 B2 B2 B2 B2 B2 B1 B1 PoP 12hr 20 20 40 40 30 QPF 12hr 0 0.01 0.06 0.04 0.02 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S S S S S S C C C C C C S S C C Tstms S C C S S Obvis PF Heat index 87 84 Max heat 87 87 Date Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 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 61 82 62 84 66 86 63 82 Temp 64 64 79 73 64 65 81 76 69 68 83 74 67 66 80 72 Dewpt 63 63 62 63 61 62 66 65 65 68 70 69 65 63 62 58 PWind dir N NE S S S SW W NW Wind char LT LT LT LT LT LT LT LT Avg clouds SC FW FW FW FW FW SC SC SC SC SC B1 SC SC FW SC PoP 12hr 10 5 0 10 20 40 20 20 Rain shwrs S S S C S S Tstms S S S $$ VAZ037-192000- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 137 AM EDT Tue Aug 19 2025 Date Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 77 67 85 69 81 Temp 67 67 72 76 76 72 69 68 68 68 76 82 82 78 73 71 70 70 75 78 77 73 Dewpt 66 65 66 66 67 67 68 68 67 68 70 70 70 70 72 70 70 69 69 68 66 66 RH 97 93 81 71 74 84 97100 97100 82 67 67 76 97 97100 97 82 71 69 79 Wind dir N NE NE NE NE NE NE NE NE NE SE SE E E NE NE NE NE NE NE NE N Wind spd 4 5 5 6 8 6 3 2 2 2 2 4 5 5 4 4 5 8 9 10 10 8 Clouds OV B2 B2 B2 SC B1 B2 B2 B2 B2 B1 B1 B1 B1 B1 B2 B2 B2 B2 B1 B1 SC PoP 12hr 20 20 40 40 40 QPF 12hr 0 0 0.05 0.03 0.02 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C C C C C C C C C S Tstms S C C S S S Obvis PF PF PF PF Heat index 86 86 Max heat 86 87 Date Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 63 82 61 82 65 83 62 83 Temp 66 65 79 74 64 63 79 74 67 67 81 74 66 64 80 72 Dewpt 64 63 60 60 60 60 62 63 64 65 66 65 63 62 58 56 PWind dir N NE SE S S SW W NW Wind char LT LT LT LT LT LT LT LT Avg clouds SC SC SC FW SC SC SC SC SC SC SC B1 SC SC FW FW PoP 12hr 20 10 5 20 20 50 20 10 Rain shwrs S S S S S C S Tstms S S $$ MDZ003-192000- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 137 AM EDT Tue Aug 19 2025 Date Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 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 82 66 78 Temp 66 65 69 72 72 70 68 67 66 68 74 78 79 75 70 69 67 67 71 74 74 70 Dewpt 62 63 64 65 65 65 65 66 65 67 70 72 72 71 70 69 67 66 67 67 65 64 RH 87 93 84 79 79 84 90 97 97 97 87 82 79 87100100100 97 87 79 74 81 Wind dir E E E E E E SE SE SE SE S S SE E NE NE NE NE NE NE NE NE Wind spd 4 5 5 6 8 6 5 4 4 4 5 5 5 5 5 5 5 6 9 10 10 6 Clouds B2 B2 B2 OV B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 SC PoP 12hr 10 30 60 60 30 QPF 12hr 0 0 0.04 0.08 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C S S L L L L C C S S C C Tstms S C C C S Obvis PF Date Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 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 82 61 84 65 85 60 81 Temp 64 64 79 73 64 65 81 76 68 68 82 74 64 64 78 71 Dewpt 63 61 62 61 59 60 65 63 63 65 68 66 62 61 58 54 PWind dir N NE SE S S SW SW W Wind char LT LT LT LT LT LT LT LT Avg clouds SC SC FW FW FW FW SC SC B1 B1 SC B1 SC FW FW FW PoP 12hr 10 5 5 20 30 50 20 10 Rain shwrs S C C S C S Tstms S S C S $$ MDZ017-192000- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 137 AM EDT Tue Aug 19 2025 Date Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 78 71 84 72 81 Temp 71 73 74 75 76 73 73 73 73 76 79 82 82 78 75 74 72 75 77 79 77 74 Dewpt 70 71 72 72 72 71 71 71 70 73 73 74 73 73 72 72 71 72 71 71 68 66 RH 97 93 93 90 87 93 93 93 90 90 82 77 74 85 90 93 97 90 82 77 74 76 Wind dir NE NE E E E E E E E SE SE SE SE E E NE NE NE NE N N N Wind spd 10 11 12 12 12 10 9 8 6 6 8 9 10 9 10 10 12 13 17 18 18 14 Clouds OV B2 B2 OV B2 B2 B2 B2 B1 B1 B1 B1 B1 SC SC SC B1 B1 B2 B1 B1 B1 PoP 12hr 50 30 30 20 30 QPF 12hr 0.31 0.01 0.02 0 0.01 Snow 12hr 00-00 00-00 00-00 Rain shwrs L C C C C S C S C C C C S S S S C C C C Tstms S S C S S Obvis PF PF Heat index 88 87 Max heat 88 88 Date Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 67 80 67 82 70 84 68 83 Temp 70 71 78 73 70 71 79 75 72 73 82 77 72 72 81 75 Dewpt 63 63 62 62 62 65 64 65 66 68 68 70 68 67 64 64 PWind dir N N SE S S S SW NW Wind char GN GN LT GN GN GN LT LT Avg clouds SC FW CL FW FW FW FW FW FW SC SC B1 B1 SC FW SC PoP 12hr 10 5 0 5 10 30 30 20 Rain shwrs S C C S S $$ WVZ502-192000- Petersburg WV 38.99N 79.15W Elev. 963 ft 137 AM EDT Tue Aug 19 2025 Date Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 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 63 87 65 78 Temp 64 63 73 80 80 73 67 65 64 65 78 83 82 74 69 67 66 65 71 74 75 70 Dewpt 64 62 67 67 68 68 67 65 64 65 70 71 72 72 69 67 66 65 69 68 68 67 RH 100 97 81 65 67 84100100100100 76 67 72 93100100100100 93 82 79 90 Wind dir E NE E E E E E SE SE SE S S E N NE NE NE NE NE NE NE NE Wind spd 2 2 2 4 5 5 4 2 2 2 2 3 3 2 2 2 2 3 4 5 5 4 Clouds B2 B1 B1 B1 B1 B1 B1 B1 SC B1 B1 B2 B2 B2 B1 B2 B2 OV B2 B2 B1 B1 PoP 12hr 10 20 70 50 50 QPF 12hr 0 0 0.26 0.28 0.05 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C L L C C C C C C C C S Tstms S C C C S Obvis PF PF PF PF PF Heat index 82 83 88 87 Max heat 82 83 88 89 Date Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 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 83 60 86 62 85 56 79 Temp 62 60 79 72 62 62 83 73 64 64 81 71 59 58 76 67 Dewpt 62 60 64 64 60 60 67 68 63 63 66 64 58 56 55 54 PWind dir NE E S S SW W W W Wind char LT LT LT LT LT LT LT LT Avg clouds B1 B1 SC SC FW SC SC B1 B1 B1 B1 B1 SC SC FW FW PoP 12hr 20 20 5 40 30 50 20 20 Rain shwrs S S S C C C C C S S Tstms S S S S S $$ MDZ014-192000- Annapolis MD 38.99N 76.49W Elev. 7 ft 137 AM EDT Tue Aug 19 2025 Date Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 73 70 81 71 77 Temp 70 69 70 72 72 72 71 72 72 73 76 80 79 78 75 74 73 72 73 76 75 73 Dewpt 67 66 67 68 67 67 69 69 70 71 73 74 73 72 73 72 71 70 69 68 66 64 RH 90 90 90 87 84 84 93 90 93 93 90 82 82 82 94 93 93 93 87 76 74 73 Wind dir NE NE E E E E E E SE SE SE SE SE E E NE NE NE NE NE NE N Wind spd 9 10 11 11 11 10 9 6 5 5 8 9 10 8 8 8 10 10 13 13 14 11 Clouds OV OV OV OV OV OV B2 B2 B1 B2 B1 B1 B1 B1 B1 B1 B2 B2 B2 B1 B1 B1 PoP 12hr 30 30 40 30 30 QPF 12hr 0.15 0.07 0.05 0.01 0.01 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S S C C S S S S C C C C C C S S C C Tstms C C C S Heat index 84 Max heat 84 84 Date Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 66 78 67 79 70 81 69 80 Temp 69 69 77 74 69 70 78 76 72 72 80 76 72 71 79 75 Dewpt 63 61 60 61 63 63 63 63 66 67 68 67 67 65 62 60 PWind dir N NE S S S S SW W Wind char GN GN LT GN GN GN LT LT Avg clouds SC FW FW FW FW FW FW FW SC SC B1 B1 B1 SC FW SC PoP 12hr 10 5 0 5 20 40 30 20 Rain shwrs S S C C S S Tstms S S S $$