Point Forecast Matrices
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
035 FOUS51 KLWX 180236 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 1036 PM EDT Sun Aug 17 2025 VAZ054-180800- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 1036 PM EDT Sun Aug 17 2025 Date 08/17/25 Mon 08/18/25 Tue 08/19/25 Wed 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 74 79 69 79 69 Temp 77 78 75 75 76 76 75 72 72 71 70 71 74 76 76 74 72 71 70 71 Dewpt 71 71 70 68 67 66 66 66 66 66 67 66 66 66 67 67 67 67 66 67 RH 82 79 84 79 74 71 74 81 81 84 90 84 76 71 74 79 84 87 87 87 Wind dir S NW N N NE NE NE NE NE NE NE NE E E E E E E NE NE Wind spd 6 4 5 10 12 11 11 10 9 8 6 8 10 10 10 10 9 6 5 5 Clouds B1 B1 B1 B2 OV OV OV B2 B1 B2 B2 B2 B2 B2 B2 B1 SC B1 B1 B1 PoP 12hr 40 30 30 30 10 QPF 12hr 0.34 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C S S S C C C C C C Tstms Heat index 88 Max heat 90 Date 08/20 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 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 69 85 69 86 69 86 71 85 Temp 79 77 73 72 82 78 72 71 82 77 72 72 83 78 73 73 83 77 Dewpt 66 67 68 66 63 63 64 63 62 63 65 66 64 65 68 68 66 65 PWind dir E NE NE NE E S S S SW Wind char GN GN GN LT LT LT GN GN GN Avg clouds B1 SC SC SC SC SC SC SC SC SC SC SC SC SC SC B1 B1 B1 PoP 12hr 20 10 20 10 10 5 20 20 40 Rain shwrs S S S S S C Tstms S S $$ MDZ013-180800- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 1036 PM EDT Sun Aug 17 2025 Date 08/17/25 Mon 08/18/25 Tue 08/19/25 Wed EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 72 77 66 77 67 Temp 77 76 73 72 74 74 73 70 68 68 67 67 72 74 74 72 69 68 67 68 Dewpt 73 71 69 69 68 68 68 68 67 66 65 66 67 67 68 67 65 65 65 67 RH 87 85 87 90 82 82 84 93 97 93 93 97 84 79 82 84 87 90 93 97 Wind dir W NW N N NE NE NE NE NE E NE E E E E E E E NE NE Wind spd 3 3 5 11 11 9 9 8 5 5 5 6 8 8 8 5 5 3 3 4 Clouds B1 B1 B2 B2 OV OV OV OV B2 B2 B2 B2 B1 B2 B1 B1 SC B1 B1 B1 PoP 12hr 30 20 30 20 10 QPF 12hr 0.39 0 0.01 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C C C S S S S Tstms Heat index 83 Max heat 87 Coast Flood Y Date 08/20 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 82 67 83 66 84 67 85 69 85 Temp 79 76 69 68 81 76 69 69 81 76 69 70 82 77 72 71 83 77 Dewpt 69 69 67 66 65 65 64 64 64 65 65 67 67 67 67 69 70 68 PWind dir E NE NE N E S S S SW Wind char LT LT GN LT LT LT LT LT LT Avg clouds B1 SC SC SC SC SC SC SC SC FW FW SC SC SC SC SC B1 B1 PoP 12hr 20 20 20 10 10 5 20 20 40 Rain shwrs S S S S S S S C Tstms S S $$ MDZ011-180800- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 1036 PM EDT Sun Aug 17 2025 Date 08/17/25 Mon 08/18/25 Tue 08/19/25 Wed 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 77 82 71 83 72 Temp 77 80 77 77 78 79 78 74 75 72 72 73 76 80 80 76 76 72 72 74 Dewpt 72 70 68 66 65 65 65 64 65 65 65 64 63 63 64 64 64 64 64 65 RH 85 72 74 69 64 62 64 71 71 79 79 73 64 56 58 66 66 76 76 74 Wind dir N NW N N NE NE NE NE NE E NE NE E E E E E E NE NE Wind spd 3 3 5 10 11 10 10 8 6 5 5 6 9 9 9 9 8 3 3 3 Clouds B2 B1 B2 B2 OV OV OV OV B2 B2 B2 B1 B1 B2 B2 B1 SC SC B1 B1 PoP 12hr 40 20 30 20 20 QPF 12hr 0.34 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C C C S S S S S S Tstms Heat index 89 83 81 82 Max heat 90 83 82 81 83 Date 08/20 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 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 87 72 88 71 89 73 90 75 90 Temp 83 78 75 75 86 79 75 74 87 79 75 75 87 80 77 77 87 79 Dewpt 66 67 66 64 62 62 63 62 61 62 64 65 64 65 66 67 66 65 PWind dir E NE NE N E S S S SW Wind char LT LT GN LT LT LT GN LT LT Avg clouds B1 SC SC SC SC SC FW FW SC SC FW SC SC SC SC SC B1 B1 PoP 12hr 20 20 20 10 10 5 20 20 40 Rain shwrs S S S S S S S C Tstms S S $$ WVZ052-180800- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 1036 PM EDT Sun Aug 17 2025 Date 08/17/25 Mon 08/18/25 Tue 08/19/25 Wed EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 67 78 63 77 64 Temp 77 73 70 70 73 76 76 72 67 66 64 66 70 73 74 72 68 66 65 66 Dewpt 68 67 66 63 63 64 64 64 64 64 63 64 64 65 65 65 65 64 64 64 RH 74 81 87 78 71 66 66 76 90 93 97 93 81 76 74 79 90 93 97 93 Wind dir NW N N N N NE NE E E E NE NE E E E E E SE E E Wind spd 5 6 9 10 10 8 8 6 4 3 4 5 5 5 6 5 5 3 3 4 Clouds SC B1 B2 B1 B2 OV OV B2 B2 B2 B2 B2 B2 B2 B2 B1 B2 B2 B2 B2 PoP 12hr 10 20 30 30 20 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C C C C C C C S S Tstms Obvis PF PF Date 08/20 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 82 64 83 63 85 63 86 65 85 Temp 77 75 68 68 79 75 66 66 82 76 66 67 83 77 68 69 82 74 Dewpt 66 66 66 63 64 64 63 62 62 63 62 63 65 65 65 65 64 62 PWind dir E NE N N E SE S S SW Wind char LT LT LT LT LT LT LT LT LT Avg clouds B2 B1 SC B1 SC B1 FW SC SC SC SC SC SC B1 SC SC SC B1 PoP 12hr 30 20 30 10 10 5 30 20 40 Rain shwrs C S S S C C S S S C Tstms S S $$ VAZ506-180800- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 1036 PM EDT Sun Aug 17 2025 Date 08/17/25 Mon 08/18/25 Tue 08/19/25 Wed 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 69 78 66 77 66 Temp 75 74 72 70 75 76 75 72 68 68 67 67 72 74 74 72 70 68 67 68 Dewpt 71 72 69 68 71 71 69 69 68 67 67 67 70 70 70 70 68 67 66 68 RH 87 93 90 93 87 85 82 90100 97100100 93 87 87 93 93 97 97100 Wind dir NW NW N N N NE NE NE NE NE NE NE E E E E E E E E Wind spd 4 4 8 10 10 9 9 8 5 4 4 5 5 5 8 6 5 3 3 3 Clouds B1 SC B2 B2 OV OV OV B2 B2 B2 B2 B2 B2 B2 B2 B1 B2 B1 B2 B1 PoP 12hr 20 30 30 30 20 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C S C C C C C C C C S S Tstms Date 08/20 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 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 66 83 65 85 65 85 68 85 Temp 79 76 69 68 81 76 68 67 82 76 68 68 83 77 70 70 83 76 Dewpt 71 69 68 67 67 66 65 64 66 65 64 67 68 67 68 69 70 66 PWind dir E NE N N E S S S SW Wind char LT LT LT LT LT LT LT LT LT Avg clouds B1 B1 SC SC SC SC SC SC SC SC SC SC SC SC SC B1 B1 B1 PoP 12hr 30 20 20 10 10 10 20 20 40 Rain shwrs C S S S S S S C Tstms S S $$ VAZ037-180800- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 1036 PM EDT Sun Aug 17 2025 Date 08/17/25 Mon 08/18/25 Tue 08/19/25 Wed EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 72 84 66 79 67 Temp 72 74 72 72 78 81 80 75 71 69 67 68 73 75 77 73 70 69 68 69 Dewpt 69 70 69 69 69 68 68 66 67 67 67 67 67 67 68 67 68 68 67 68 RH 90 87 90 90 74 65 67 74 87 93100 97 81 76 74 81 93 97 97 97 Wind dir N NW N NE NE NE NE NE NE NE N NE NE NE NE NE E NE NE NE Wind spd 3 2 3 4 9 9 10 8 5 4 4 4 4 5 5 5 2 2 2 2 Clouds B2 B1 B1 B1 B1 B1 B1 B2 B1 B2 OV B2 B2 B2 B2 B1 B1 B2 B2 B2 PoP 12hr 40 30 40 30 20 QPF 12hr 0.40 0 0.03 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C C C C S S C C S S Tstms Obvis PF PF PF Heat index 84 83 Max heat 84 84 85 Date 08/20 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 82 67 83 65 84 65 83 66 83 Temp 79 76 69 69 80 75 67 68 81 75 67 67 81 75 68 69 80 74 Dewpt 67 67 66 66 65 64 64 64 63 63 64 64 65 65 66 67 66 65 PWind dir NE NE NE N SE S S S S Wind char LT LT LT LT LT LT LT LT LT Avg clouds B1 B1 SC B1 SC B1 SC SC SC SC SC SC SC B1 SC B1 B1 B1 PoP 12hr 30 20 30 20 20 20 30 20 50 Rain shwrs C S S C S S S C S S S C Tstms S S S S $$ MDZ003-180800- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 1036 PM EDT Sun Aug 17 2025 Date 08/17/25 Mon 08/18/25 Tue 08/19/25 Wed 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 77 64 77 64 Temp 74 72 69 68 73 76 75 72 67 66 65 65 69 72 74 71 67 67 65 66 Dewpt 70 68 66 63 65 66 66 64 65 64 63 63 65 66 66 65 65 65 64 65 RH 87 87 90 84 76 71 74 76 93 93 93 93 87 81 76 81 93 93 97 97 Wind dir N N N N NE NE NE E E E E E E E SE E E E E E Wind spd 5 8 10 10 9 8 6 6 5 4 4 4 5 5 6 5 5 3 3 3 Clouds SC B1 B1 B1 B2 OV B2 B2 B2 B1 B2 B2 B2 B2 B2 B1 B2 B1 B2 B2 PoP 12hr 10 20 40 30 20 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C C C S S C C S S S S Tstms Date 08/20 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 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 64 83 63 85 64 87 66 85 Temp 77 74 68 67 79 75 66 66 82 76 67 68 84 78 69 69 83 75 Dewpt 68 67 66 65 66 65 64 62 64 63 62 64 67 66 66 67 67 62 PWind dir E NE NE NE E SE S S SW Wind char LT LT LT LT LT LT LT LT LT Avg clouds B1 B1 B1 SC SC B1 FW FW SC SC FW FW SC B1 B1 SC SC B1 PoP 12hr 30 30 30 10 10 5 30 30 40 Rain shwrs C C S C C C S S C Tstms C S S $$ MDZ017-180800- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 1036 PM EDT Sun Aug 17 2025 Date 08/17/25 Mon 08/18/25 Tue 08/19/25 Wed EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 75 82 70 79 70 Temp 75 76 75 77 79 79 78 74 72 71 71 73 76 78 78 75 72 71 71 74 Dewpt 73 72 72 73 72 72 71 71 70 69 69 70 71 71 71 70 68 67 67 69 RH 94 87 90 87 79 79 79 90 93 93 93 90 85 79 79 84 87 87 87 84 Wind dir SW SW NW N NE NE NE NE NE NE NE NE E E E E E E NE NE Wind spd 6 5 5 8 10 13 13 11 10 10 10 10 10 10 10 9 8 5 6 6 Clouds B2 B2 B1 B1 B2 B2 OV OV B2 B1 B2 B1 B1 B1 B1 SC SC SC SC SC PoP 12hr 100 30 30 30 10 QPF 12hr 0.07 0 0.01 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs O C C C C S S C C S S Tstms O Heat index 84 Max heat 86 84 84 Date 08/20 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 83 69 82 69 82 70 83 71 84 Temp 81 77 71 73 80 76 71 73 80 76 72 74 81 76 73 75 82 76 Dewpt 70 70 68 68 66 65 64 66 64 65 66 68 67 67 68 70 71 70 PWind dir NE NE N N E S S S S Wind char GN GN GN LT LT LT GN GN GN Avg clouds SC SC SC SC SC SC FW FW FW FW SC SC SC SC SC SC B1 B1 PoP 12hr 20 10 20 5 10 10 10 20 30 Rain shwrs S S S S C Tstms S $$ WVZ502-180800- Petersburg WV 38.99N 79.15W Elev. 963 ft 1036 PM EDT Sun Aug 17 2025 Date 08/17/25 Mon 08/18/25 Tue 08/19/25 Wed 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 83 63 82 64 Temp 72 69 67 67 73 80 81 73 67 65 64 64 72 77 79 73 68 66 65 66 Dewpt 72 68 67 66 68 68 67 68 67 65 64 64 69 69 70 69 68 66 65 65 RH 100 97100 97 84 67 63 84100100100100 90 76 74 87100100100 97 Wind dir NW N N N N NE NE E E E E E SE SE SE SE SE SE S SE Wind spd 2 2 2 3 3 4 6 4 2 2 2 2 2 3 5 4 3 2 2 2 Clouds B1 B1 B2 OV B2 B1 B1 B2 B1 B2 B2 OV B2 B1 B1 B1 B1 B1 B1 B2 PoP 12hr 20 30 30 40 20 QPF 12hr 0 0 0 0.01 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C C C C C C C C C S S S Tstms Obvis PF PF PF PF PF Heat index 83 83 Max heat 83 84 Date 08/20 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 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 63 83 61 86 63 87 63 84 Temp 81 74 66 65 78 74 64 63 82 74 64 65 84 75 65 65 81 72 Dewpt 69 69 66 65 68 67 63 62 66 66 62 62 67 68 64 64 65 63 PWind dir E NE NE N E S S SW W Wind char LT LT LT LT LT LT LT LT LT Avg clouds B1 B1 B1 B1 B1 B1 SC SC SC SC SC SC SC B1 SC SC B1 B1 PoP 12hr 50 30 50 10 20 10 40 20 50 Rain shwrs S C C S C C S S C S S C C Tstms C S S C S S $$ MDZ014-180800- Annapolis MD 38.99N 76.49W Elev. 7 ft 1036 PM EDT Sun Aug 17 2025 Date 08/17/25 Mon 08/18/25 Tue 08/19/25 Wed EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 74 77 69 77 69 Temp 78 77 75 75 75 74 73 72 71 70 70 71 73 74 75 74 72 70 70 71 Dewpt 74 73 71 69 69 68 68 66 68 68 67 66 66 67 66 66 67 67 67 68 RH 88 87 87 82 82 82 84 81 90 93 90 84 79 79 74 76 84 90 90 90 Wind dir S NW N NE NE NE NE NE NE NE NE NE E E E E E E E NE Wind spd 4 3 4 11 12 11 11 10 10 8 9 9 10 10 10 9 8 5 5 5 Clouds B2 SC B2 B2 OV OV OV B2 B2 B2 B2 B2 B1 B2 B1 B1 SC SC B1 B1 PoP 12hr 40 20 30 20 10 QPF 12hr 0.46 0 0.01 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C C C S S S S Tstms Heat index 84 Max heat 87 Coast Flood Y Date 08/20 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 80 69 81 69 81 70 82 71 82 Temp 77 77 72 72 78 78 72 72 79 77 72 73 80 78 74 74 80 77 Dewpt 69 68 68 66 64 64 65 64 63 64 67 67 66 67 69 69 69 68 PWind dir NE NE NE N E S S S S Wind char LT LT GN LT LT LT GN GN GN Avg clouds B1 SC SC SC SC SC FW FW SC FW FW SC SC SC SC SC B1 B1 PoP 12hr 20 20 20 10 10 10 20 20 40 Rain shwrs S S S S S S C C Tstms S S $$