Point Forecast Matrices
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
100 FOUS51 KLWX 192038 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 438 PM EDT Thu Sep 19 2024 VAZ054-200800- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 438 PM EDT Thu Sep 19 2024 Date 09/19/24 Fri 09/20/24 Sat 09/21/24 Sun 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 65 84 65 83 66 Temp 82 76 71 68 66 67 77 83 82 76 71 68 66 65 75 81 81 76 72 69 67 66 Dewpt 60 60 61 61 60 60 62 60 59 61 63 63 62 63 62 61 61 62 63 64 63 64 RH 47 58 71 78 81 78 60 46 46 60 76 84 87 93 64 51 51 62 73 84 87 93 Wind dir N N NW N N N E E E SE SE S S SE S S SE SE SE SE E E Wind spd 6 5 4 5 5 5 6 6 6 9 8 6 4 5 8 8 8 9 9 8 8 8 Clouds SC SC SC FW FW FW FW FW SC FW FW FW FW SC SC SC B1 B1 B2 B2 B2 B2 PoP 12hr 5 5 0 20 30 QPF 12hr 0 0 0 0.01 0.28 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C C C Tstms C C C S Heat index 82 83 82 82 82 Max heat 83 83 83 82 83 Date 09/22 Mon 09/23/24 Tue 09/24/24 Wed 09/25/24 Thu 09/26/24 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 76 63 74 62 76 64 78 64 78 Temp 74 72 66 64 72 68 65 64 74 71 66 66 75 72 67 65 75 72 Dewpt 62 60 59 58 57 55 57 58 58 58 60 61 62 61 61 61 59 57 PWind dir E E E SE SE SE SE SE N Wind char GN LT GN LT GN LT GN GN GN Avg clouds B2 B1 B1 B1 B1 B1 B1 B1 B2 B2 B2 B2 B2 B2 B2 B2 B1 SC PoP 12hr 5 5 5 10 10 30 30 40 30 Rain shwrs C C C C C C C C Tstms S $$ MDZ013-200800- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 438 PM EDT Thu Sep 19 2024 Date 09/19/24 Fri 09/20/24 Sat 09/21/24 Sun EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 63 83 64 80 62 Temp 83 75 69 66 64 65 76 81 81 74 69 66 64 65 74 78 78 71 66 64 63 62 Dewpt 56 56 57 58 59 60 61 60 59 62 63 62 62 63 63 62 63 64 64 64 63 62 RH 40 52 66 75 84 84 60 49 47 66 81 87 93 93 69 58 60 79 93100100100 Wind dir N NE NW NW N NE E E E SE SE S S SE SE SE SE SE SE SE E E Wind spd 6 3 3 2 3 4 5 6 6 5 5 3 3 3 6 6 6 6 5 4 5 5 Wind gust 14 Clouds SC SC SC FW FW FW FW FW SC FW SC SC SC SC SC SC B1 B2 B2 B2 B2 B2 PoP 12hr 5 5 0 10 30 QPF 12hr 0 0 0 0 0.21 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S S Tstms S C S Heat index 82 81 Max heat 82 82 81 Coast Flood Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y A A Date 09/22 Mon 09/23/24 Tue 09/24/24 Wed 09/25/24 Thu 09/26/24 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 74 59 73 59 73 61 76 61 76 Temp 72 69 61 61 71 67 60 61 71 68 62 63 74 70 63 63 75 68 Dewpt 63 61 59 58 58 58 57 59 60 61 60 62 64 65 63 63 63 62 PWind dir E E E SE SE SE SE SE N Wind char LT LT LT LT LT LT LT LT LT Avg clouds B2 B1 SC B1 B1 B1 B1 B1 B1 B2 B2 B2 B2 B2 B2 B2 B1 SC PoP 12hr 5 5 5 10 10 30 30 40 30 Rain shwrs C C C C C C C C $$ MDZ011-200800- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 438 PM EDT Thu Sep 19 2024 Date 09/19/24 Fri 09/20/24 Sat 09/21/24 Sun 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 65 85 67 82 66 Temp 83 76 71 68 67 68 78 83 82 76 72 69 68 67 76 80 80 74 71 68 67 66 Dewpt 53 54 56 57 59 59 60 59 59 60 63 62 62 62 61 60 60 62 62 63 62 62 RH 36 46 59 68 75 73 54 44 46 58 73 78 81 84 60 51 51 66 73 84 84 87 Wind dir N N NW N N NE E E E SE SE S S SE SE SE SE SE SE SE E E Wind spd 6 3 2 2 3 4 5 6 6 6 5 3 3 3 5 6 6 5 5 4 5 5 Wind gust 14 Clouds SC SC SC FW FW FW FW FW SC FW SC SC SC SC SC SC B1 B2 B2 B2 B2 B2 PoP 12hr 5 5 0 10 30 QPF 12hr 0 0 0 0 0.19 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S S Tstms C C S Heat index 83 82 81 81 Max heat 83 83 83 81 81 Date 09/22 Mon 09/23/24 Tue 09/24/24 Wed 09/25/24 Thu 09/26/24 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 62 74 62 76 64 78 64 78 Temp 74 72 66 63 73 69 65 64 74 70 66 66 76 72 68 65 76 72 Dewpt 60 59 57 55 55 55 56 56 57 57 60 59 61 61 61 60 60 59 PWind dir E E E SE SE SE SE SE N Wind char LT LT LT LT LT LT LT LT LT Avg clouds B2 SC SC B1 B1 B1 B1 B1 B1 B1 B2 B2 B2 B2 B2 B2 B1 SC PoP 12hr 5 5 5 10 10 30 30 40 30 Rain shwrs C C C C C C C C $$ WVZ052-200800- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 438 PM EDT Thu Sep 19 2024 Date 09/19/24 Fri 09/20/24 Sat 09/21/24 Sun EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 57 81 58 80 60 Temp 79 71 65 62 59 60 72 80 80 71 65 61 58 60 71 78 79 70 65 64 62 61 Dewpt 61 61 59 58 56 57 60 60 59 60 60 59 58 60 61 62 61 64 64 62 60 61 RH 54 71 81 87 90 90 66 51 49 68 84 93100100 71 58 54 81 97 93 93100 Wind dir N N NW NW NW NW NE SE E SE SE SE SE SE SE SE SE SE SE SE E E Wind spd 4 2 1 1 2 2 3 4 5 3 3 3 3 3 5 6 6 4 3 3 4 4 Wind gust 13 Clouds SC SC FW FW FW FW CL FW FW FW FW FW SC SC B1 SC B1 B1 B2 B2 B2 B2 PoP 12hr 5 5 0 30 30 QPF 12hr 0 0 0 0.05 0.22 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C S S Tstms C C C S S Obvis PF Heat index 81 81 Max heat 81 81 81 Date 09/22 Mon 09/23/24 Tue 09/24/24 Wed 09/25/24 Thu 09/26/24 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 72 56 69 55 71 58 73 56 73 Temp 70 67 58 58 68 65 58 57 69 66 60 60 71 67 59 58 71 67 Dewpt 63 61 58 58 59 57 56 56 60 60 59 59 62 61 59 58 58 56 PWind dir E SE SE SE SE SE SE S N Wind char LT LT LT LT LT LT LT LT LT Avg clouds B2 SC B1 B2 B2 B1 B1 B2 B2 B2 B2 B2 B2 B1 B1 B2 B1 SC PoP 12hr 10 10 20 30 30 40 40 40 40 Rain shwrs S S C C C C C C C C C C C C Tstms S S $$ VAZ506-200800- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 438 PM EDT Thu Sep 19 2024 Date 09/19/24 Fri 09/20/24 Sat 09/21/24 Sun 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 60 83 61 81 63 Temp 79 73 67 63 61 62 75 82 82 73 68 64 61 63 73 79 80 72 67 65 64 63 Dewpt 63 63 62 60 58 58 61 60 60 61 62 62 61 63 64 64 63 67 66 64 63 63 RH 58 71 84 90 90 87 62 47 47 66 81 93100100 73 60 56 84 97 97 97100 Wind dir N N NW N N N NE NE NE SE SE S S S S S SE SE SE SE E E Wind spd 5 3 3 2 3 4 4 4 4 4 4 3 3 4 5 5 5 5 4 4 4 4 Clouds SC SC SC FW FW FW FW FW FW FW FW FW SC SC SC SC B1 B1 B2 B2 B2 B2 PoP 12hr 5 5 0 20 40 QPF 12hr 0 0 0 0.01 0.20 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C S S Tstms S C C S S Heat index 82 82 81 Max heat 82 82 81 Date 09/22 Mon 09/23/24 Tue 09/24/24 Wed 09/25/24 Thu 09/26/24 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 73 59 72 58 74 60 76 60 76 Temp 72 70 61 61 70 67 60 60 72 69 62 62 74 70 63 61 74 70 Dewpt 66 63 61 60 62 60 58 59 63 61 61 61 66 64 63 61 63 60 PWind dir E SE SE SE SE SE SE S N Wind char LT LT LT LT LT LT LT LT LT Avg clouds B2 B1 B1 B2 B2 B1 B1 B1 B2 B2 B2 B2 B2 B2 B1 B2 B1 SC PoP 12hr 5 5 10 20 20 30 40 40 30 Rain shwrs S S S S C C C C C C C C Tstms S S $$ VAZ037-200800- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 438 PM EDT Thu Sep 19 2024 Date 09/19/24 Fri 09/20/24 Sat 09/21/24 Sun EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 61 82 59 81 61 Temp 78 71 67 65 62 63 75 81 81 72 67 64 61 60 73 79 79 71 67 65 63 62 Dewpt 65 66 65 63 61 61 63 61 60 61 61 62 61 60 62 63 63 64 65 63 61 62 RH 64 84 93 93 97 93 66 51 49 68 81 93100100 68 58 58 79 93 93 93100 Wind dir NE N NW NW NW N NE E E E E E SE S S S S S S S N NE Wind spd 4 2 2 1 2 3 3 4 4 3 2 2 2 2 5 5 5 3 2 2 3 2 Clouds SC SC SC SC SC FW FW FW FW FW FW SC SC SC SC SC B1 SC SC B1 B1 B1 PoP 12hr 10 5 5 30 30 QPF 12hr 0 0 0 0.09 0.03 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C C C S S Tstms S S C S S S Obvis PF Heat index 82 82 Max heat 82 82 81 Date 09/22 Mon 09/23/24 Tue 09/24/24 Wed 09/25/24 Thu 09/26/24 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 75 60 72 58 74 59 76 59 75 Temp 74 69 62 62 70 67 62 60 71 68 61 61 74 70 62 61 73 68 Dewpt 64 62 62 60 60 60 59 58 61 61 60 60 63 61 61 60 58 56 PWind dir NE E SE SE S SE S W N Wind char LT LT LT LT LT LT LT LT LT Avg clouds B1 B1 B1 B2 B2 B1 B2 B2 B2 B1 B1 B1 B2 B1 B2 B1 B1 SC PoP 12hr 10 5 10 10 20 30 30 30 30 Rain shwrs S S C C C C C C C C Tstms S S $$ MDZ003-200800- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 438 PM EDT Thu Sep 19 2024 Date 09/19/24 Fri 09/20/24 Sat 09/21/24 Sun 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 59 83 60 80 62 Temp 80 72 65 63 60 61 75 81 80 71 66 63 61 62 72 78 78 71 66 64 62 64 Dewpt 58 58 56 54 54 56 60 60 59 60 59 60 60 61 63 63 63 66 65 64 62 62 RH 47 61 73 72 81 84 60 49 49 68 78 90 97 97 73 60 60 84 97100100 93 Wind dir N NE N N N N E SE SE SE SE SE SE SE S S S SE SE SE E E Wind spd 4 3 3 3 3 3 3 3 4 3 4 3 3 3 4 5 5 4 3 3 4 3 Clouds SC FW FW CL CL CL CL FW FW FW FW FW SC SC B1 SC B1 B2 B2 B2 B2 B2 PoP 12hr 5 5 0 30 40 QPF 12hr 0 0 0 0.03 0.21 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C S S Tstms C C C S Heat index 81 82 81 Max heat 81 82 82 Date 09/22 Mon 09/23/24 Tue 09/24/24 Wed 09/25/24 Thu 09/26/24 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 73 58 72 57 73 59 74 59 75 Temp 71 69 61 59 69 66 60 59 71 68 61 61 72 69 61 61 73 69 Dewpt 65 63 60 59 61 59 57 57 62 61 60 61 65 63 61 60 62 59 PWind dir E SE SE SE SE SE S S N Wind char LT LT LT LT LT LT LT LT LT Avg clouds B2 B1 B1 B2 B2 B1 B1 B2 B2 B2 B2 OV B2 B2 B2 B2 B1 SC PoP 12hr 5 10 10 20 30 40 40 40 30 Rain shwrs S S C C C C C C C C C C Tstms S S $$ MDZ017-200800- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 438 PM EDT Thu Sep 19 2024 Date 09/19/24 Fri 09/20/24 Sat 09/21/24 Sun EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 67 81 65 80 64 Temp 78 73 69 68 67 69 76 78 78 73 70 68 65 67 74 77 77 71 67 65 64 66 Dewpt 62 63 64 65 65 66 64 63 64 64 63 63 63 63 63 63 63 64 64 64 63 64 RH 58 71 84 90 93 90 66 60 62 73 78 84 93 87 69 62 62 79 90 97 97 93 Wind dir N N W S N NE NE NE NE SE SE SE E NE E SE SE SE SE SE E E Wind spd 8 4 4 4 4 5 6 8 9 9 8 5 5 6 8 9 9 8 8 6 8 8 Clouds SC SC SC SC SC SC FW FW FW FW FW FW FW SC SC SC SC B1 B2 B2 B2 B2 PoP 12hr 5 5 0 5 40 QPF 12hr 0 0 0 0 0.06 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C Tstms S S Date 09/22 Mon 09/23/24 Tue 09/24/24 Wed 09/25/24 Thu 09/26/24 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 76 62 76 62 77 64 78 64 78 Temp 74 70 64 64 74 69 64 64 74 70 65 67 76 72 66 66 76 71 Dewpt 63 61 58 58 57 57 57 59 58 59 61 63 63 63 64 64 64 62 PWind dir E E E E E SE SE SE N Wind char GN GN GN LT GN LT GN LT GN Avg clouds B1 SC SC SC SC SC SC B1 B1 B1 B1 B1 B2 B1 B1 B2 B1 SC PoP 12hr 5 0 0 5 5 20 20 30 30 Rain shwrs S S S S C C C C $$ WVZ502-200800- Petersburg WV 38.99N 79.15W Elev. 963 ft 438 PM EDT Thu Sep 19 2024 Date 09/19/24 Fri 09/20/24 Sat 09/21/24 Sun 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 58 84 57 85 57 Temp 78 70 65 62 59 60 73 82 82 71 65 61 57 59 74 83 80 71 64 62 59 58 Dewpt 62 62 61 60 58 58 62 58 57 59 58 59 57 58 61 61 62 64 63 62 59 58 RH 58 76 87 93 96 93 68 44 43 66 78 93100 96 64 47 54 79 97100100100 Wind dir NE N W SW SW SW NE E E SE S S S S S S S S S SW SW NE Wind spd 4 2 1 1 1 1 1 3 4 3 3 3 2 2 2 4 4 3 2 2 1 1 Clouds SC SC SC SC SC SC FW FW FW SC FW FW SC SC SC SC B1 B1 SC SC B1 B1 PoP 12hr 10 5 5 30 30 QPF 12hr 0 0 0 0.08 0.01 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S C C C C Tstms S C C C C Obvis PF PF PF PF PF Heat index 82 82 83 81 Max heat 82 82 83 83 Date 09/22 Mon 09/23/24 Tue 09/24/24 Wed 09/25/24 Thu 09/26/24 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 81 58 77 57 80 57 81 54 78 Temp 79 73 61 58 76 71 62 59 78 72 60 59 79 72 60 55 76 69 Dewpt 62 62 60 58 61 60 60 59 63 62 60 59 61 60 58 55 56 54 PWind dir NE SE SE SE SE S SW SW NW Wind char LT LT LT LT LT LT LT LT LT Avg clouds B1 SC B2 B2 B1 B1 B2 B2 B1 B1 B1 B1 B1 B1 B1 B1 SC SC PoP 12hr 10 10 30 30 40 30 40 30 30 Rain shwrs C C C C C C C C C C C C C C Tstms S S $$ MDZ014-200800- Annapolis MD 38.99N 76.49W Elev. 7 ft 438 PM EDT Thu Sep 19 2024 Date 09/19/24 Fri 09/20/24 Sat 09/21/24 Sun EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 66 80 66 78 64 Temp 81 75 71 68 67 68 75 79 79 74 70 68 66 68 74 76 76 73 69 67 65 64 Dewpt 59 59 60 60 63 64 63 62 61 64 63 63 63 63 62 63 63 64 65 64 64 63 RH 47 58 68 76 87 87 66 56 54 71 78 84 90 84 66 64 64 73 87 90 97 97 Wind dir NE NW NW N NE NE E E E SE SE S SE SE SE SE SE SE SE SE E E Wind spd 5 3 3 3 3 5 6 6 8 8 8 4 4 4 8 8 9 6 6 6 8 6 Wind gust 17 Clouds SC SC SC FW FW FW FW FW FW FW FW SC SC SC SC SC SC B1 B2 B2 B2 B2 PoP 12hr 5 5 0 10 30 QPF 12hr 0 0 0 0 0.13 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C Tstms S S C Heat index 81 Max heat 82 Coast Flood Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y A A Date 09/22 Mon 09/23/24 Tue 09/24/24 Wed 09/25/24 Thu 09/26/24 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 73 61 70 62 72 64 73 64 73 Temp 71 70 63 63 69 67 64 64 70 69 65 65 71 70 66 66 72 69 Dewpt 62 60 59 58 57 57 58 59 58 60 61 62 63 63 63 63 62 60 PWind dir E E E E SE SE SE SE N Wind char GN LT GN LT GN LT GN LT GN Avg clouds B1 SC SC B1 B1 B1 SC B1 B1 B1 B1 B2 B2 B2 B2 B2 B1 SC PoP 12hr 5 5 5 10 10 30 30 40 30 Rain shwrs C C C C C C C C $$