Point Forecast Matrices
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
971 FOUS51 KLWX 182337 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 737 PM EDT Wed Sep 18 2024 VAZ054-190800- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 737 PM EDT Wed Sep 18 2024 Date 09/18/24 Thu 09/19/24 Fri 09/20/24 Sat 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 82 65 82 66 Temp 73 72 71 69 67 75 81 82 77 72 68 65 65 76 81 82 75 71 68 67 67 Dewpt 66 66 64 63 62 63 61 60 61 61 60 59 59 60 60 61 60 61 62 61 62 RH 79 81 79 81 84 66 51 47 58 68 76 81 81 58 49 49 60 71 81 81 84 Wind dir NE N N N N N N N N N N N N NE NE NE NE NE NE N N Wind spd 8 5 4 4 5 6 6 6 5 4 3 5 5 8 9 8 10 9 8 9 10 Clouds OV B2 B2 B1 B2 B1 B1 B1 SC FW FW FW FW FW SC FW FW SC SC SC SC PoP 12hr 30 20 10 10 10 QPF 12hr 0.02 0.01 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C S S S S Heat index 82 82 82 83 Max heat 82 83 82 83 Date 09/21 Sun 09/22/24 Mon 09/23/24 Tue 09/24/24 Wed 09/25/24 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 65 76 61 75 60 75 61 77 Temp 79 75 67 66 74 69 64 62 72 67 63 62 72 68 64 63 73 69 Dewpt 60 59 60 60 59 56 56 56 53 53 55 55 55 54 57 57 57 56 PWind dir NE NE NE E E E E E SE Wind char GN GN GN GN GN GN GN LT GN Avg clouds SC SC SC SC B1 B1 SC SC B1 B1 SC B1 B1 B1 B1 B1 B2 B2 PoP 12hr 10 5 10 5 5 10 10 20 20 Rain shwrs S S S S $$ MDZ013-190800- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 737 PM EDT Wed Sep 18 2024 Date 09/18/24 Thu 09/19/24 Fri 09/20/24 Sat EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 66 83 63 81 62 Temp 69 69 68 67 67 76 82 83 75 69 66 64 65 76 80 80 71 66 64 62 63 Dewpt 67 64 63 62 61 62 59 59 59 60 59 58 58 60 60 61 62 62 62 61 62 RH 93 84 84 84 81 62 46 44 58 73 78 81 78 58 51 52 73 87 93 97 97 Wind dir NE NE N N N N N N N N N N N NE NE E NE NE NE N NE Wind spd 10 5 4 4 5 6 6 6 4 3 3 5 5 8 9 8 6 6 5 5 8 Clouds OV OV B2 B2 B1 B1 SC SC SC SC FW FW FW FW SC SC SC SC SC SC SC PoP 12hr 30 20 10 10 5 QPF 12hr 0.04 0.01 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C S S S S Heat index 82 83 81 81 Max heat 82 83 81 82 Coast Flood Y Y Y Y Y Y Y Y Y Date 09/21 Sun 09/22/24 Mon 09/23/24 Tue 09/24/24 Wed 09/25/24 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 78 62 75 58 73 57 74 58 74 Temp 77 72 63 63 72 67 60 59 69 65 59 59 71 66 61 60 71 67 Dewpt 63 62 61 60 61 59 55 55 55 56 55 56 57 57 57 58 59 59 PWind dir NE NE NE E E E E E SE Wind char GN LT GN LT GN LT LT LT LT Avg clouds SC SC SC B1 B1 B1 SC SC B1 B1 SC B1 B1 B1 B1 B1 B1 B2 PoP 12hr 5 5 10 5 5 10 10 20 20 Rain shwrs S S S S $$ MDZ011-190800- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 737 PM EDT Wed Sep 18 2024 Date 09/18/24 Thu 09/19/24 Fri 09/20/24 Sat 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 84 66 83 65 Temp 67 72 70 70 67 77 83 84 79 74 71 67 66 77 81 82 75 71 67 66 67 Dewpt 65 63 62 61 61 61 58 57 58 59 59 58 58 60 60 60 61 60 62 61 60 RH 93 73 76 73 81 58 43 40 49 59 66 73 75 56 49 47 62 68 84 84 78 Wind dir NE NE N N N N N N N N N N N NE NE E NE NE NE N N Wind spd 9 5 4 4 5 6 6 8 4 4 4 5 6 8 8 6 8 6 5 6 8 Clouds OV B2 B2 B2 B2 B1 SC SC SC SC FW FW FW FW SC SC SC SC SC SC SC PoP 12hr 20 20 10 10 5 QPF 12hr 0.03 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S S Heat index 83 82 82 Max heat 83 83 82 83 Date 09/21 Sun 09/22/24 Mon 09/23/24 Tue 09/24/24 Wed 09/25/24 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 64 77 61 76 60 76 61 77 Temp 79 75 68 66 75 68 64 61 72 67 63 62 73 67 64 63 74 68 Dewpt 60 60 60 58 57 56 55 54 52 53 54 54 55 55 56 56 57 56 PWind dir NE NE NE E E E E E SE Wind char GN LT GN LT GN LT LT LT LT Avg clouds SC SC SC SC B1 B1 SC SC B1 B1 SC B1 B1 B1 B1 B1 B1 B2 PoP 12hr 5 5 10 5 5 10 10 20 20 Rain shwrs S S S S $$ WVZ052-190800- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 737 PM EDT Wed Sep 18 2024 Date 09/18/24 Thu 09/19/24 Fri 09/20/24 Sat EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 62 79 56 80 57 Temp 68 65 64 63 63 70 77 79 70 62 59 57 59 71 79 80 70 64 60 58 59 Dewpt 66 64 62 61 61 62 60 60 58 56 55 54 55 61 60 60 60 60 59 58 59 RH 93 97 93 93 93 76 56 52 66 81 87 90 87 71 52 51 71 87 96100100 Wind dir N N N N N N N N N NW NW NW NW NE NE E NE E NE NE N Wind spd 5 3 4 3 3 4 5 5 4 3 3 3 3 3 4 4 4 3 2 3 4 Clouds B2 B1 B1 B2 B2 B1 B1 SC FW FW FW FW FW CL FW FW FW FW FW SC SC PoP 12hr 20 20 10 5 5 QPF 12hr 0 0.01 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S S Obvis PF PF PF PF PF Heat index 81 Max heat 81 Date 09/21 Sun 09/22/24 Mon 09/23/24 Tue 09/24/24 Wed 09/25/24 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 77 57 74 54 71 52 73 53 73 Temp 77 70 61 59 70 65 57 56 67 62 56 54 69 63 56 55 69 65 Dewpt 61 61 60 59 60 57 56 54 54 54 54 53 56 55 54 55 58 57 PWind dir E E E SE SE SE SE SE SE Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 PoP 12hr 5 10 10 10 10 20 20 30 30 Rain shwrs S S S S C S S C $$ VAZ506-190800- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 737 PM EDT Wed Sep 18 2024 Date 09/18/24 Thu 09/19/24 Fri 09/20/24 Sat 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 81 59 82 60 Temp 71 69 66 65 63 72 79 81 74 67 63 60 61 75 81 81 72 65 62 60 61 Dewpt 65 65 64 63 62 62 61 61 60 59 59 57 57 60 60 60 61 62 62 60 61 RH 81 87 93 93 97 71 54 51 62 75 87 90 87 60 49 49 68 90100100100 Wind dir NE N N N N N N N N N NW N N N N NE NE E NE N N Wind spd 9 3 3 4 4 5 6 6 4 3 3 4 5 5 6 5 5 4 3 4 5 Clouds OV B2 B2 B2 B2 B2 SC B1 SC SC FW FW FW FW FW SC FW FW SC SC SC PoP 12hr 30 20 10 10 10 QPF 12hr 0.09 0.01 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C S C C S Obvis PF PF PF PF Heat index 82 82 82 Max heat 82 82 82 Date 09/21 Sun 09/22/24 Mon 09/23/24 Tue 09/24/24 Wed 09/25/24 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 78 60 76 57 73 55 75 57 74 Temp 78 73 63 62 73 68 60 58 69 65 58 57 71 66 59 58 71 67 Dewpt 64 62 63 62 62 59 57 56 57 56 56 56 59 57 57 57 61 59 PWind dir NE NE NE E E SE SE SE SE Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B2 B2 B1 PoP 12hr 5 10 10 5 10 10 10 20 20 Rain shwrs S S S S $$ VAZ037-190800- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 737 PM EDT Wed Sep 18 2024 Date 09/18/24 Thu 09/19/24 Fri 09/20/24 Sat EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 64 78 59 81 58 Temp 69 68 67 66 65 71 75 78 71 66 64 62 62 74 80 80 70 63 61 59 59 Dewpt 66 65 64 63 63 64 64 64 62 60 59 57 57 63 61 60 60 60 59 59 59 RH 90 90 90 90 93 79 69 62 73 81 84 84 84 69 52 51 71 90 93100100 Wind dir N N N N N NE NE NE N NW NW NW N NE NE NE NE N N N N Wind spd 5 4 4 3 3 4 4 4 2 2 2 2 2 4 5 5 4 3 3 3 4 Clouds OV B2 B2 B2 B2 B1 B1 B1 SC FW FW FW FW FW FW FW FW FW FW FW FW PoP 12hr 30 20 10 10 5 QPF 12hr 0.16 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S S S S S S Tstms S S Obvis PF PF PF PF PF PF PF PF Heat index 81 81 Max heat 81 82 Date 09/21 Sun 09/22/24 Mon 09/23/24 Tue 09/24/24 Wed 09/25/24 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 79 59 75 58 72 55 75 56 74 Temp 78 72 63 61 72 67 60 58 69 64 58 56 71 65 59 58 71 65 Dewpt 62 62 60 60 61 59 58 57 56 56 55 54 57 56 57 56 58 57 PWind dir NE NE NE NE E NE S SE S Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW FW SC SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 PoP 12hr 10 10 10 5 10 10 10 20 20 Rain shwrs S S S S $$ MDZ003-190800- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 737 PM EDT Wed Sep 18 2024 Date 09/18/24 Thu 09/19/24 Fri 09/20/24 Sat 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 61 80 58 81 59 Temp 69 66 64 63 63 73 78 80 72 65 62 60 61 74 80 81 72 65 62 61 60 Dewpt 64 63 61 60 59 60 58 57 56 55 54 54 55 60 60 60 61 60 60 59 60 RH 84 90 90 90 87 64 50 45 57 70 75 81 81 62 51 49 68 84 93 93100 Wind dir N N N N N N N N N N N N N NE NE E NE E NE NE NE Wind spd 5 4 4 4 4 5 5 6 4 3 4 4 3 5 5 4 4 3 3 4 4 Clouds B2 B2 B2 B2 B1 B1 B1 SC SC FW FW FW FW CL FW SC FW FW SC SC SC PoP 12hr 20 10 5 5 5 QPF 12hr 0.01 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S Obvis PF PF Heat index 80 81 82 Max heat 80 81 82 Date 09/21 Sun 09/22/24 Mon 09/23/24 Tue 09/24/24 Wed 09/25/24 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 78 59 75 56 73 54 75 55 74 Temp 78 72 63 61 72 66 59 57 69 64 57 56 71 64 58 57 69 65 Dewpt 63 62 61 60 61 59 56 55 56 55 54 54 58 56 54 55 60 58 PWind dir E E E E SE SE SE SE SE Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC SC SC SC B1 SC B1 B1 B1 B1 B1 B1 B1 SC B1 B2 B1 B1 PoP 12hr 5 10 10 5 10 20 20 30 30 Rain shwrs S S S C S S C $$ MDZ017-190800- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 737 PM EDT Wed Sep 18 2024 Date 09/18/24 Thu 09/19/24 Fri 09/20/24 Sat EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 68 79 66 79 64 Temp 73 69 68 68 70 74 78 79 73 70 67 66 69 75 78 78 71 67 65 64 66 Dewpt 68 66 66 65 65 65 64 63 64 65 64 63 63 63 63 62 62 63 62 62 63 RH 84 90 93 90 84 74 62 58 73 84 90 90 81 66 60 58 73 87 90 93 90 Wind dir NE NE NE N N N N N N N NW NW N N N N NE NE NE N N Wind spd 12 11 10 9 10 10 10 8 5 5 4 6 9 10 10 10 10 10 8 9 10 Clouds OV B2 B2 B2 B1 B1 SC SC SC SC FW FW FW FW SC SC SC SC SC SC SC PoP 12hr 60 20 10 10 5 QPF 12hr 0.03 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs L C S S S S S S Obvis PF PF PF Date 09/21 Sun 09/22/24 Mon 09/23/24 Tue 09/24/24 Wed 09/25/24 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 78 65 77 61 75 61 75 62 77 Temp 76 73 66 67 74 68 63 64 72 67 62 64 73 67 63 65 74 68 Dewpt 62 62 62 62 61 58 57 57 56 56 57 59 58 58 58 60 60 60 PWind dir NE NE NE NE NE E E E E Wind char GN GN GN GN GN GN GN GN GN Avg clouds SC SC SC SC B1 B1 SC SC SC SC SC B1 B1 B1 B1 B1 B1 B1 PoP 12hr 10 5 10 5 5 5 5 10 20 Rain shwrs S S $$ WVZ502-190800- Petersburg WV 38.99N 79.15W Elev. 963 ft 737 PM EDT Wed Sep 18 2024 Date 09/18/24 Thu 09/19/24 Fri 09/20/24 Sat 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 61 78 55 83 52 Temp 67 65 63 62 63 68 76 78 70 64 59 57 56 73 81 82 70 61 58 54 54 Dewpt 66 63 62 62 62 64 63 61 60 60 57 55 55 62 58 57 58 58 57 54 54 RH 97 93 97100 97 87 64 56 71 87 93 93 96 68 46 43 66 90 96100100 Wind dir NW N N N N N NE NE N W SW SW SW E E E E E W W NW Wind spd 3 2 1 1 1 2 2 3 1 2 1 1 1 2 3 3 2 2 2 2 2 Clouds B2 B2 B2 B2 B2 B2 B1 SC SC FW SC SC SC FW FW FW FW SC FW FW SC PoP 12hr 30 20 5 10 5 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C S Obvis PF PF PF PF PF PF PF Heat index 81 82 Max heat 81 82 Date 09/21 Sun 09/22/24 Mon 09/23/24 Tue 09/24/24 Wed 09/25/24 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 56 81 54 77 51 81 53 80 Temp 82 75 61 58 76 68 58 55 72 65 56 53 76 67 57 55 74 67 Dewpt 59 59 60 57 59 58 56 54 56 54 54 52 55 55 54 54 57 57 PWind dir NE SE NE SE SE S SE S S Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW FW SC SC SC SC B1 B1 B1 SC B1 B1 SC SC B1 B1 B1 B1 PoP 12hr 10 10 10 5 20 20 20 20 30 Rain shwrs S S S S S S S C $$ MDZ014-190800- Annapolis MD 38.99N 76.49W Elev. 7 ft 737 PM EDT Wed Sep 18 2024 Date 09/18/24 Thu 09/19/24 Fri 09/20/24 Sat EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 68 81 66 78 65 Temp 72 70 69 68 68 74 79 81 76 71 69 67 67 74 77 78 72 71 67 67 66 Dewpt 66 65 64 64 63 63 61 61 63 63 62 61 61 62 62 62 62 63 63 63 62 RH 81 84 84 87 84 69 54 51 64 76 78 81 81 66 60 58 71 76 87 87 87 Wind dir N NE NE N N N N NE NE NE NW N N NE NE NE NE NE NE NE NE Wind spd 6 8 6 6 6 8 8 5 3 3 4 6 8 9 8 8 9 8 8 8 10 Clouds OV B2 B2 B2 B2 SC SC SC SC SC FW FW FW FW SC FW SC SC SC SC SC PoP 12hr 30 20 10 10 5 QPF 12hr 0.07 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C S S S S S S S Heat index 82 Max heat 82 Coast Flood Y Y Y Y Y Y Y Y Y Date 09/21 Sun 09/22/24 Mon 09/23/24 Tue 09/24/24 Wed 09/25/24 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 75 64 73 60 71 60 71 61 72 Temp 74 71 66 65 71 68 64 62 68 66 62 62 69 66 63 63 70 68 Dewpt 62 62 62 61 60 58 58 57 54 55 56 57 57 57 58 59 59 59 PWind dir NE NE NE E NE E E E SE Wind char GN GN GN GN GN GN GN LT GN Avg clouds SC SC SC B1 B1 B1 SC SC B1 SC SC B1 B1 B1 B1 B1 B1 B1 PoP 12hr 10 5 10 5 5 10 10 20 20 Rain shwrs S S S S $$