Point Forecast Matrices
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
097 FOUS51 KLWX 182037 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 436 PM EDT Mon Aug 18 2025 VAZ054-190800- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 436 PM EDT Mon Aug 18 2025 Date 08/18/25 Tue 08/19/25 Wed 08/20/25 Thu 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 76 69 82 70 Temp 74 71 71 70 70 70 71 72 72 71 71 71 70 71 75 79 79 76 74 72 71 71 Dewpt 65 65 65 66 66 66 66 65 66 66 66 67 68 68 70 69 70 69 69 68 67 66 RH 74 81 81 87 87 87 84 79 81 84 84 87 93 90 84 72 74 79 84 87 87 84 Wind dir NE NE NE NE NE NE NE E E E E E E E E E E E E NE NE NE Wind spd 11 10 9 8 6 10 10 10 11 10 9 6 6 6 8 8 10 10 9 9 10 11 Clouds OV OV B2 OV OV OV OV OV B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 SC B1 B1 B1 PoP 12hr 30 40 20 20 10 QPF 12hr 0.07 0.09 0.01 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S C C C S C S S S S S S S S Tstms S S Date 08/21 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 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 68 86 69 85 71 86 69 83 Temp 80 76 71 71 83 77 71 71 83 77 72 72 83 76 72 70 80 75 Dewpt 63 62 62 62 60 61 63 64 63 64 65 67 67 67 64 63 59 59 PWind dir NE N E S S S S W W Wind char GN LT LT LT GN GN GN LT LT Avg clouds SC SC FW FW FW FW FW SC FW SC SC SC B1 B1 B1 SC SC SC PoP 12hr 10 5 5 5 10 20 50 30 20 Rain shwrs S S C C S Tstms S S S $$ MDZ013-190800- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 436 PM EDT Mon Aug 18 2025 Date 08/18/25 Tue 08/19/25 Wed 08/20/25 Thu EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 66 74 66 80 67 Temp 72 70 69 68 68 67 69 72 71 70 68 68 68 69 74 77 77 74 71 70 69 68 Dewpt 65 67 66 65 65 66 66 67 68 67 66 66 66 68 70 72 71 71 69 68 66 66 RH 79 90 90 90 90 97 90 84 90 90 93 93 93 97 87 85 82 90 93 93 90 93 Wind dir NE NE NE E NE NE E E E E E E E E E E E E E NE NE NE Wind spd 9 8 5 5 5 8 9 9 9 6 5 4 4 4 5 8 9 9 5 5 6 11 Clouds OV OV B2 OV OV B2 OV OV B2 B2 B1 B2 B2 B2 B2 B2 B1 B1 B1 B1 B1 SC PoP 12hr 30 30 30 20 20 QPF 12hr 0.06 0.02 0.01 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C S C S S C C C S S S S S S S S S S Tstms S S S Date 08/21 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 82 65 84 67 85 69 85 66 83 Temp 80 76 68 68 82 77 69 69 82 77 71 71 83 76 69 68 80 75 Dewpt 65 64 62 63 63 63 64 65 65 66 65 68 69 69 65 63 61 61 PWind dir NE N E S S S S W W Wind char GN LT LT LT GN LT LT LT LT Avg clouds SC SC FW FW FW FW FW FW FW SC SC B1 B1 B1 B1 SC SC SC PoP 12hr 10 5 5 5 10 30 50 40 20 Rain shwrs S C C C C S S Tstms S S S $$ MDZ011-190800- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 436 PM EDT Mon Aug 18 2025 Date 08/18/25 Tue 08/19/25 Wed 08/20/25 Thu 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 71 80 71 86 72 Temp 77 73 74 72 72 71 74 76 76 73 74 72 72 74 78 82 82 77 77 74 73 74 Dewpt 63 64 65 65 64 63 63 63 64 64 64 65 65 66 68 68 68 68 67 67 65 63 RH 62 73 74 79 76 76 69 64 66 73 71 79 79 76 71 63 63 74 71 79 76 69 Wind dir NE NE NE E NE NE E E E E E E E E E E E E E NE NE NE Wind spd 10 8 6 5 5 6 9 9 10 6 5 3 4 4 5 8 9 8 8 8 9 11 Clouds OV OV B2 B2 B2 B2 OV OV B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 B1 B1 SC PoP 12hr 20 30 30 20 20 QPF 12hr 0 0 0.02 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S S S C C S S S S S S S S S S Tstms S S S Heat index 85 85 Max heat 85 86 Date 08/21 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 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 71 89 72 90 74 90 72 88 Temp 85 78 74 73 86 79 75 75 86 79 76 76 86 78 74 74 85 78 Dewpt 62 61 61 60 60 61 63 63 63 63 65 66 66 66 64 62 59 59 PWind dir NE N E S S S S W W Wind char GN LT LT LT GN LT LT LT LT Avg clouds SC SC FW FW FW FW FW FW FW SC SC B1 B1 B1 B1 SC SC SC PoP 12hr 10 5 5 5 10 30 50 40 20 Rain shwrs S C C C C S S Tstms S S S S $$ WVZ052-190800- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 436 PM EDT Mon Aug 18 2025 Date 08/18/25 Tue 08/19/25 Wed 08/20/25 Thu EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 64 75 64 79 65 Temp 75 71 67 66 66 66 69 72 73 70 66 66 65 66 72 75 77 73 69 67 66 67 Dewpt 64 63 63 63 63 63 63 63 64 64 64 65 64 65 65 67 67 67 67 67 64 64 RH 69 76 87 90 90 90 81 73 73 81 93 97 97 97 79 76 71 81 93100 93 90 Wind dir NE E E E NE NE E E E SE E E E E E E E E E NE NE NE Wind spd 8 6 4 3 4 5 5 5 6 5 4 2 2 3 4 5 6 6 3 3 4 6 Clouds B2 B1 B1 OV OV B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 B1 PoP 12hr 10 20 20 30 20 QPF 12hr 0 0.01 0 0.01 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S S S C C S S S S Tstms S S S Obvis PF PF Date 08/21 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 82 61 85 63 86 65 84 61 81 Temp 79 74 65 66 82 76 66 67 82 76 68 68 81 74 64 65 78 71 Dewpt 64 63 61 61 62 62 61 62 64 65 65 65 64 62 60 59 57 57 PWind dir NE N E S S S SW W W Wind char GN LT LT LT GN LT LT LT LT Avg clouds SC SC SC FW FW FW FW FW SC SC B1 B1 B1 B1 SC FW FW SC PoP 12hr 20 5 5 5 20 30 50 20 10 Rain shwrs S S C C C C S Tstms S S C S $$ VAZ506-190800- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 436 PM EDT Mon Aug 18 2025 Date 08/18/25 Tue 08/19/25 Wed 08/20/25 Thu 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 74 66 81 66 Temp 72 71 69 68 68 67 70 72 72 70 68 68 67 69 73 77 77 74 71 69 68 68 Dewpt 66 67 67 66 66 67 69 69 68 69 68 68 67 68 72 73 72 72 70 69 67 67 RH 81 87 93 93 93100 97 90 87 97100100100 97 97 87 85 93 97100 97 97 Wind dir NE NE NE NE NE NE NE E E E E E NE NE E E E E E NE NE N Wind spd 9 8 5 4 4 5 6 6 8 5 4 3 3 3 4 6 8 8 4 4 5 10 Clouds OV B2 B2 B2 OV B2 OV B2 OV B2 B2 B2 B2 B2 B2 B2 B1 B2 B1 B1 B1 B1 PoP 12hr 20 30 30 30 20 QPF 12hr 0.02 0.05 0.04 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S S S C C S S C C S S S S Tstms S S Date 08/21 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 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 63 85 65 87 68 86 64 83 Temp 80 75 67 66 83 77 68 67 84 77 70 70 83 74 67 66 80 73 Dewpt 66 65 63 64 64 64 63 65 67 67 66 68 70 67 64 63 61 60 PWind dir NE N E S S S SW W W Wind char GN LT LT LT GN LT LT LT LT Avg clouds SC SC FW FW FW FW FW SC SC SC B1 B1 B1 B1 B1 SC SC SC PoP 12hr 10 5 5 5 20 30 50 30 20 Rain shwrs S S C S C C S Tstms S S S S $$ VAZ037-190800- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 436 PM EDT Mon Aug 18 2025 Date 08/18/25 Tue 08/19/25 Wed 08/20/25 Thu EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 66 76 66 82 67 Temp 77 72 69 67 67 68 71 74 75 71 69 67 67 67 73 78 80 75 71 70 69 69 Dewpt 67 66 66 66 66 66 66 66 67 67 67 67 67 67 68 68 68 69 70 69 67 67 RH 71 81 90 97 97 93 84 76 76 87 93100100100 84 71 67 82 97 97 93 93 Wind dir NE NE NE NE N NE NE NE NE E NE N NE NE NE E E NE NE NE NE N Wind spd 10 8 5 4 4 5 6 6 8 6 3 2 2 2 3 5 6 6 4 4 5 9 Clouds B1 SC B2 OV OV B2 OV OV B1 B1 B2 B2 OV B2 B2 B1 B1 SC B1 B2 B2 B1 PoP 12hr 20 20 20 30 20 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S S C C S S S S Tstms S Obvis PF PF PF Heat index 83 Max heat 83 Date 08/21 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 82 63 84 64 84 66 83 63 82 Temp 79 74 66 66 81 75 66 67 81 75 68 68 81 74 66 65 79 72 Dewpt 64 63 62 63 62 61 63 63 64 64 65 66 65 64 63 62 58 58 PWind dir NE N SE S S S SW W W Wind char GN LT LT LT LT LT LT LT LT Avg clouds SC SC FW FW FW FW FW SC SC B1 SC B1 SC B1 SC SC SC SC PoP 12hr 20 10 10 10 30 30 50 20 20 Rain shwrs S C S C S C S S Tstms S S S $$ MDZ003-190800- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 436 PM EDT Mon Aug 18 2025 Date 08/18/25 Tue 08/19/25 Wed 08/20/25 Thu 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 64 76 64 78 65 Temp 75 71 67 66 66 65 69 72 73 70 66 66 66 66 71 75 76 73 69 68 66 67 Dewpt 64 63 63 63 62 63 64 65 64 64 64 65 64 65 67 69 69 68 67 67 64 65 RH 69 76 87 90 87 93 84 79 73 81 93 97 93 97 87 82 79 84 93 97 93 93 Wind dir NE E E E E E E E E E E E E E SE E E E E NE NE NE Wind spd 6 6 5 4 4 4 5 5 6 5 4 3 3 3 4 6 8 6 4 4 5 8 Clouds B2 B1 B1 B2 B2 OV B2 OV B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 B1 PoP 12hr 20 10 30 30 30 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C C C C C C C C C Tstms S S S Date 08/21 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 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 61 86 64 88 66 86 60 81 Temp 80 75 66 66 83 77 67 67 84 76 69 68 82 74 65 64 78 71 Dewpt 66 64 62 63 64 63 62 63 66 66 65 66 67 62 60 60 58 56 PWind dir NE N E SE S S SW W W Wind char GN LT LT LT GN LT LT LT LT Avg clouds SC SC FW FW FW FW FW FW SC SC B1 B1 B1 B1 SC FW FW FW PoP 12hr 20 10 5 5 20 40 50 30 10 Rain shwrs S S C C C C C Tstms S S C S $$ MDZ017-190800- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 436 PM EDT Mon Aug 18 2025 Date 08/18/25 Tue 08/19/25 Wed 08/20/25 Thu EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 70 77 70 82 70 Temp 76 73 71 71 71 73 75 76 75 74 72 72 72 74 78 81 80 76 73 72 71 73 Dewpt 71 70 70 70 70 71 71 72 71 71 69 69 69 71 72 72 72 71 70 69 69 68 RH 85 90 97 97 97 93 87 87 87 90 90 90 90 90 82 74 77 85 90 90 93 84 Wind dir NE NE NE NE NE E E E E E E E E E E E E E NE NE NE NE Wind spd 13 11 10 10 10 11 12 11 11 10 9 6 6 6 8 10 11 13 10 10 13 18 Clouds OV OV B2 B2 OV B2 B2 B2 B2 B2 B1 B1 B1 SC B1 SC SC SC SC SC B1 SC PoP 12hr 60 50 30 20 10 QPF 12hr 0.09 0.11 0.02 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C L C C C C C C S S S S Tstms S S S S S S S S S S S Heat index 85 84 Max heat 85 85 Date 08/21 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 81 68 82 70 82 71 84 69 82 Temp 79 76 70 72 80 76 71 73 81 76 73 74 83 77 71 73 81 76 Dewpt 66 65 63 64 63 64 63 66 65 66 65 69 69 70 67 67 63 64 PWind dir NE N NE S S S S SW NW Wind char BZ GN GN LT GN GN GN LT LT Avg clouds SC SC FW FW FW FW FW FW FW FW FW SC SC B1 B1 SC SC SC PoP 12hr 10 5 5 5 5 20 40 40 20 Rain shwrs S S C C S S Tstms S $$ WVZ502-190800- Petersburg WV 38.99N 79.15W Elev. 963 ft 436 PM EDT Mon Aug 18 2025 Date 08/18/25 Tue 08/19/25 Wed 08/20/25 Thu 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 82 63 83 63 Temp 79 73 67 65 64 64 72 78 80 73 66 65 64 64 75 80 80 74 68 66 65 64 Dewpt 68 67 66 65 64 63 67 68 67 68 66 65 64 64 68 70 70 70 68 66 64 64 RH 69 81 97100100 97 84 71 65 84100100100100 79 72 72 87100100 97100 Wind dir NE E E E E NE E E E SE E SE SE SE SE E E E NE NE NE NE Wind spd 6 4 2 2 2 2 2 3 5 5 3 2 2 2 2 3 4 4 2 2 2 3 Clouds B1 B2 B2 B2 B2 B2 B2 B1 B1 B2 B1 B1 B2 B2 B1 B1 B1 B1 B1 B2 B2 B2 PoP 12hr 10 20 20 50 30 QPF 12hr 0 0 0 0.04 0.01 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S S C C C C C C C Tstms C C S Obvis PF PF PF Heat index 82 83 83 Max heat 82 83 83 85 Date 08/21 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 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 59 86 62 88 62 84 57 80 Temp 78 72 62 62 83 74 64 64 83 74 65 64 81 71 60 59 77 68 Dewpt 67 66 61 60 64 65 61 62 67 68 64 64 64 62 59 57 56 56 PWind dir NE W SE S S SW SW W W Wind char LT LT LT LT LT LT LT LT LT Avg clouds B1 B1 FW SC SC FW FW SC SC B1 B1 B1 B1 B1 SC SC SC FW PoP 12hr 30 10 10 5 40 40 50 20 20 Rain shwrs C C S C C C C C S S Tstms S S C S S S S $$ MDZ014-190800- Annapolis MD 38.99N 76.49W Elev. 7 ft 436 PM EDT Mon Aug 18 2025 Date 08/18/25 Tue 08/19/25 Wed 08/20/25 Thu EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 69 74 69 79 70 Temp 72 71 70 70 70 70 71 72 72 72 71 71 70 71 75 77 77 76 73 72 71 71 Dewpt 67 66 68 68 67 66 66 67 67 67 68 68 68 69 70 71 70 69 70 69 68 67 RH 84 84 93 93 90 87 84 84 84 84 90 90 93 93 84 82 79 79 90 90 90 87 Wind dir NE NE NE NE NE E E E E E E E E E E E E E E NE NE NE Wind spd 11 10 10 8 9 10 11 12 11 10 8 5 5 6 8 9 11 11 9 8 10 13 Clouds OV OV OV OV OV OV B2 B2 OV B2 B2 B2 B2 B2 B2 B2 B1 B1 B1 B1 SC SC PoP 12hr 40 40 30 20 20 QPF 12hr 0.10 0.07 0.02 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S C C C C C C C C S S S S S S S S Tstms S S Date 08/21 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 79 68 81 70 81 71 82 69 80 Temp 77 76 71 71 78 77 71 72 79 77 73 73 80 77 72 71 78 76 Dewpt 64 64 64 63 62 63 66 66 65 65 68 68 69 68 67 65 62 63 PWind dir NE N E S S S S SW W Wind char GN LT LT LT GN GN GN LT LT Avg clouds SC SC FW FW FW FW FW FW FW FW SC B1 B1 B1 B1 SC SC SC PoP 12hr 10 5 5 5 10 30 50 40 20 Rain shwrs S C C C C S S Tstms S S S $$