Point Forecast Matrices
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
190 FOUS51 KLWX 190838 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 438 AM EDT Thu Sep 19 2024 VAZ054-192000- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 438 AM EDT Thu Sep 19 2024 Date Thu 09/19/24 Fri 09/20/24 Sat 09/21/24 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 66 84 65 83 Temp 70 70 75 81 82 77 72 69 67 66 77 82 82 75 72 68 67 65 75 80 82 76 Dewpt 64 63 62 61 60 60 60 60 58 59 61 59 59 60 61 62 62 62 62 61 61 61 RH 81 78 64 51 47 56 66 73 73 78 58 46 46 60 68 81 84 90 64 52 49 60 Wind dir N N N N N NW N N N N NE NE E E E E E E E NE E E Wind spd 5 5 6 6 8 5 3 3 3 4 6 8 8 8 6 5 5 5 8 9 9 9 Clouds OV OV B2 B1 B1 B1 SC FW FW FW FW FW FW FW SC FW SC SC SC SC SC SC PoP 12hr 20 5 5 5 10 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S Heat index 82 82 82 82 81 83 Max heat 82 83 82 83 81 83 Date Sun 09/22/24 Mon 09/23/24 Tue 09/24/24 Wed 09/25/24 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 62 74 62 76 64 78 Temp 68 66 76 72 65 62 71 70 65 63 74 72 67 65 75 73 Dewpt 62 61 58 56 57 56 55 55 57 59 58 58 60 61 60 60 PWind dir E E E E E SE E SE Wind char LT GN GN GN GN GN LT GN Avg clouds B1 B1 B1 B1 SC B1 B2 B1 B1 B1 B2 B2 B2 B2 B2 B2 PoP 12hr 20 5 5 10 20 20 20 20 Rain shwrs S S S S S S S S $$ MDZ013-192000- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 438 AM EDT Thu Sep 19 2024 Date Thu 09/19/24 Fri 09/20/24 Sat 09/21/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 83 62 82 62 80 Temp 67 68 76 82 83 74 68 65 63 64 75 80 80 72 67 64 62 64 73 78 79 74 Dewpt 63 62 62 60 60 60 60 59 60 59 61 60 60 61 62 62 62 62 62 61 62 62 RH 87 81 62 47 46 62 76 81 90 84 62 51 51 68 84 93100 93 68 56 56 66 Wind dir N N N N N N N N N NE NE E E E E E E NE NE E E E Wind spd 4 4 6 6 6 3 2 2 3 4 6 8 6 6 5 3 3 4 6 8 8 5 Clouds OV OV B2 B1 B1 SC SC FW FW FW FW FW SC SC SC SC SC SC FW SC SC SC PoP 12hr 10 5 5 5 10 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S Heat index 82 83 81 81 Max heat 82 83 81 82 81 Coast Flood Y Y Y Y Y Y Date Sun 09/22/24 Mon 09/23/24 Tue 09/24/24 Wed 09/25/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 61 77 59 72 59 75 61 75 Temp 63 61 75 68 62 59 69 67 61 61 72 69 63 63 73 70 Dewpt 62 61 59 59 56 56 56 58 57 59 60 60 60 61 63 63 PWind dir E E E E E E E SE Wind char LT LT LT LT LT LT LT LT Avg clouds B1 B1 SC SC SC B1 B2 B1 B1 B1 B2 B2 B2 B2 B2 B2 PoP 12hr 20 5 5 10 20 20 20 20 Rain shwrs S S S S S S S S $$ MDZ011-192000- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 438 AM EDT Thu Sep 19 2024 Date Thu 09/19/24 Fri 09/20/24 Sat 09/21/24 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 84 66 85 66 82 Temp 69 70 77 83 84 78 73 70 67 66 78 83 83 76 72 69 67 66 76 79 81 75 Dewpt 61 61 60 59 57 57 57 58 59 58 59 59 58 59 61 62 61 61 61 60 60 60 RH 76 73 56 44 40 48 57 66 75 75 52 44 43 56 68 78 81 84 60 52 49 60 Wind dir N N N N N N N N N N E E E E E E NE NE NE E E E Wind spd 4 5 5 6 6 3 2 2 3 3 6 6 6 8 5 3 4 4 6 8 8 5 Clouds OV B2 B2 B1 B1 SC SC FW FW FW FW SC SC SC SC SC SC SC FW SC SC SC PoP 12hr 10 5 5 5 10 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S Heat index 83 83 83 82 Max heat 83 84 83 84 82 Date Sun 09/22/24 Mon 09/23/24 Tue 09/24/24 Wed 09/25/24 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 65 80 61 74 61 76 63 78 Temp 68 65 77 72 66 61 71 70 65 62 74 72 67 64 76 73 Dewpt 61 58 56 56 56 54 54 55 56 56 58 58 59 59 60 60 PWind dir E E E E E E E SE Wind char LT GN LT LT LT LT LT LT Avg clouds B1 B1 SC SC SC B1 B2 B1 B1 B1 B2 B2 B2 B2 B2 B2 PoP 12hr 20 5 5 10 20 20 20 20 Rain shwrs S S S S S S S S $$ WVZ052-192000- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 438 AM EDT Thu Sep 19 2024 Date Thu 09/19/24 Fri 09/20/24 Sat 09/21/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 79 55 81 55 80 Temp 65 65 70 77 79 70 62 58 56 58 71 79 79 70 62 58 56 58 70 77 79 72 Dewpt 63 63 63 61 60 60 59 58 55 56 60 59 58 59 59 58 56 58 61 62 61 62 RH 93 93 78 58 52 71 90100 96 93 68 50 49 68 90100100100 73 60 54 71 Wind dir N N N N N N NW NW NW NW NE E E E SE SE E E E SE E E Wind spd 2 3 4 5 4 3 2 1 2 2 4 4 5 4 3 2 2 3 4 5 6 2 Clouds OV OV B2 B2 B1 SC SC FW FW FW FW FW FW FW FW FW SC SC SC SC B1 SC PoP 12hr 20 0 0 0 20 QPF 12hr 0 0 0 0 0.01 Snow 12hr 00-00 00-00 00-00 Drizzle O O Rain shwrs S S S Tstms S Obvis PF PF PF Date Sun 09/22/24 Mon 09/23/24 Tue 09/24/24 Wed 09/25/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 58 74 55 70 55 71 56 73 Temp 61 60 72 66 58 57 68 63 58 57 69 65 59 58 71 66 Dewpt 61 60 61 60 57 55 57 56 56 57 60 59 58 58 61 60 PWind dir E E SE SE SE SE SE SE Wind char LT LT LT LT LT LT LT LT Avg clouds B1 B1 B1 B1 B1 B2 B2 B1 B2 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 20 5 10 20 30 30 30 30 Rain shwrs S S S S C S C C C C C C Tstms S $$ VAZ506-192000- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 438 AM EDT Thu Sep 19 2024 Date Thu 09/19/24 Fri 09/20/24 Sat 09/21/24 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 81 59 83 59 81 Temp 68 67 72 79 81 73 67 63 61 61 75 81 81 72 66 61 60 61 73 79 80 74 Dewpt 64 64 64 63 62 62 62 60 57 58 61 61 60 61 61 61 60 61 63 63 62 63 RH 87 90 76 58 53 68 84 90 87 90 62 51 49 68 84100100100 71 58 54 69 Wind dir N N N N N N N N N N N NE E E SE E E E E E E E Wind spd 3 4 5 5 5 4 3 2 3 4 4 4 6 4 5 3 4 4 5 6 5 4 Clouds OV OV B2 B1 B1 B1 SC FW FW FW FW FW SC FW SC FW SC SC SC SC SC SC PoP 12hr 20 5 5 0 20 QPF 12hr 0 0 0 0 0.01 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S S Tstms S Heat index 82 82 82 81 Max heat 82 82 83 82 Date Sun 09/22/24 Mon 09/23/24 Tue 09/24/24 Wed 09/25/24 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 76 59 72 58 74 61 76 Temp 63 62 73 70 62 59 69 67 61 60 72 69 63 62 74 70 Dewpt 63 61 63 61 59 57 59 58 59 59 63 61 60 61 65 63 PWind dir E E E SE SE SE SE SE Wind char LT LT LT LT LT LT LT LT Avg clouds B1 B1 B1 B1 B1 B1 B2 B1 B1 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 20 5 10 10 20 20 30 30 Rain shwrs S S S S S C S S C Tstms S $$ VAZ037-192000- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 438 AM EDT Thu Sep 19 2024 Date Thu 09/19/24 Fri 09/20/24 Sat 09/21/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 78 59 82 58 81 Temp 67 67 71 75 78 71 66 63 61 61 75 80 80 71 65 62 60 59 72 78 80 73 Dewpt 65 66 65 65 65 64 64 63 60 60 62 61 61 60 62 61 60 59 62 63 63 63 RH 93 97 81 71 64 79 93100 97 97 64 52 52 68 90 97100100 71 60 56 71 Wind dir N N N NE NE N NW NW NW N NE NE E E E N NE N SE SE SE NE Wind spd 3 3 4 4 4 3 2 2 2 2 4 4 5 4 3 2 3 2 4 5 6 3 Clouds OV OV B2 B2 B1 SC SC FW FW FW FW FW FW FW FW SC SC SC SC SC B1 SC PoP 12hr 20 10 5 5 20 QPF 12hr 0 0 0 0 0.05 Snow 12hr 00-00 00-00 00-00 Drizzle O O Rain shwrs S S S S S S Tstms S S Obvis PF PF PF Heat index 81 81 81 Max heat 81 82 81 Date Sun 09/22/24 Mon 09/23/24 Tue 09/24/24 Wed 09/25/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 61 75 59 72 58 74 58 75 Temp 63 61 73 68 62 59 69 66 61 58 72 68 62 59 73 69 Dewpt 62 60 63 61 60 59 59 58 59 57 60 60 60 59 62 61 PWind dir NE E E SE SE SE SE SE Wind char LT LT LT LT LT LT LT LT Avg clouds SC SC B1 B1 B2 B2 B2 B1 B2 B1 B1 B2 B2 B2 B2 B2 PoP 12hr 20 10 10 20 20 20 20 30 Rain shwrs S S S S S S S C $$ MDZ003-192000- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 438 AM EDT Thu Sep 19 2024 Date Thu 09/19/24 Fri 09/20/24 Sat 09/21/24 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 80 57 83 57 80 Temp 65 65 73 78 80 71 64 61 58 59 75 81 81 72 65 61 58 59 72 78 79 72 Dewpt 62 62 62 60 59 58 57 56 54 56 61 60 59 60 59 59 58 59 62 62 62 62 RH 90 90 68 54 49 63 78 84 86 90 62 49 47 66 81 93100100 71 58 56 71 Wind dir N N N N N NE N N N N E E E E E SE E E E SE E E Wind spd 3 3 4 5 5 4 3 3 3 3 3 4 5 5 4 3 3 3 4 5 5 3 Clouds OV OV B2 B2 B1 SC SC FW FW FW FW FW FW FW FW FW SC SC SC SC SC SC PoP 12hr 20 0 0 0 20 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Drizzle O O Rain shwrs S S S Tstms S Obvis PF Heat index 81 82 81 Max heat 81 82 83 Date Sun 09/22/24 Mon 09/23/24 Tue 09/24/24 Wed 09/25/24 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 75 56 70 56 72 59 74 Temp 61 62 73 68 61 57 67 65 59 58 70 67 62 60 72 69 Dewpt 61 60 63 61 57 56 59 58 57 57 62 61 60 59 64 62 PWind dir E E SE SE SE SE SE SE Wind char LT LT LT LT LT LT LT LT Avg clouds B1 B1 B1 B1 B1 B2 B2 B1 B2 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 20 5 10 20 30 20 30 30 Rain shwrs S S S S C C S S C C S C Tstms S $$ MDZ017-192000- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 438 AM EDT Thu Sep 19 2024 Date Thu 09/19/24 Fri 09/20/24 Sat 09/21/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 79 65 82 65 79 Temp 69 70 74 78 79 73 69 66 66 68 76 80 80 72 68 67 65 67 73 76 78 72 Dewpt 65 65 65 64 63 64 64 64 64 64 63 63 62 63 63 63 63 63 63 63 63 63 RH 87 84 74 62 58 73 84 93 93 87 64 56 54 73 84 87 93 87 71 64 60 73 Wind dir N N N N N N N NW N N N N N E E E NE NE N NE NE NE Wind spd 8 8 10 10 8 4 5 4 5 6 9 9 9 9 8 6 6 8 10 11 11 6 Clouds OV B2 B2 B1 B1 B1 SC FW SC SC FW FW FW SC SC SC SC FW FW SC SC SC PoP 12hr 10 5 5 5 5 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S Heat index 81 81 Max heat 81 81 Date Sun 09/22/24 Mon 09/23/24 Tue 09/24/24 Wed 09/25/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 64 77 61 75 62 77 64 78 Temp 65 66 75 69 63 63 72 68 63 64 75 70 65 66 76 71 Dewpt 63 61 61 58 58 58 57 57 58 60 60 60 61 63 63 62 PWind dir NE NE NE NE E E E SE Wind char LT GN GN GN GN GN LT GN Avg clouds B1 B1 SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 PoP 12hr 20 5 5 5 10 10 10 20 Rain shwrs S S S $$ WVZ502-192000- Petersburg WV 38.99N 79.15W Elev. 963 ft 438 AM EDT Thu Sep 19 2024 Date Thu 09/19/24 Fri 09/20/24 Sat 09/21/24 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 55 86 54 84 Temp 65 63 68 76 78 69 64 59 56 57 73 84 84 72 64 58 55 56 73 83 81 70 Dewpt 62 63 65 64 63 63 62 59 56 57 61 58 58 58 59 58 55 56 61 61 62 63 RH 90100 90 66 60 81 93100100100 66 41 41 61 84100100100 66 47 53 78 Wind dir N N NE NE NE NW W SW SW SW E E E SE S S S SW SE E E SE Wind spd 1 1 1 3 3 2 1 1 1 1 2 3 3 2 2 2 2 1 2 4 4 2 Clouds OV OV B2 B1 B1 SC SC SC SC SC FW FW FW SC FW FW SC SC SC B1 B1 B1 PoP 12hr 20 10 10 5 30 QPF 12hr 0 0 0 0 0.04 Snow 12hr 00-00 00-00 00-00 Drizzle O O Rain shwrs S S S C C S Tstms S S C C S Obvis PF PF PF PF PF PF PF Heat index 84 84 83 82 Max heat 84 84 83 83 Date Sun 09/22/24 Mon 09/23/24 Tue 09/24/24 Wed 09/25/24 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 56 82 57 77 56 79 56 79 Temp 59 58 79 70 61 59 75 70 60 57 77 71 61 58 77 71 Dewpt 59 57 62 61 60 58 59 59 58 57 61 60 60 58 61 60 PWind dir SE E SE SE SE SE S S Wind char LT LT LT LT LT LT LT LT Avg clouds B1 SC SC B1 B2 B2 B2 B1 B2 B1 B1 B1 B2 B2 B2 B2 PoP 12hr 20 10 10 30 30 30 30 30 Rain shwrs S S C C C C C S C C C Tstms S $$ MDZ014-192000- Annapolis MD 38.99N 76.49W Elev. 7 ft 438 AM EDT Thu Sep 19 2024 Date Thu 09/19/24 Fri 09/20/24 Sat 09/21/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 81 66 79 65 78 Temp 69 69 74 79 81 75 70 69 68 68 74 77 78 73 70 68 67 66 72 75 77 73 Dewpt 65 64 63 62 61 63 63 63 63 62 62 61 61 62 63 63 63 63 62 63 63 63 RH 87 84 69 56 51 66 78 81 84 81 66 58 56 68 78 84 87 90 71 66 62 71 Wind dir N N N N NE NW N N NE NE NE NE NE E E E E NE NE NE E E Wind spd 4 5 8 6 4 3 2 2 4 5 8 9 9 9 6 5 5 6 10 10 10 6 Clouds OV B2 B2 B1 SC SC FW SC FW FW FW FW FW SC SC SC SC SC FW SC SC SC PoP 12hr 10 5 5 0 5 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S Heat index 82 Max heat 82 Coast Flood Y Y Y Y Y Y Date Sun 09/22/24 Mon 09/23/24 Tue 09/24/24 Wed 09/25/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 64 75 61 71 61 73 63 74 Temp 67 64 73 69 64 61 69 68 64 62 71 70 65 65 72 70 Dewpt 63 61 59 58 57 57 56 57 58 59 60 60 60 61 62 62 PWind dir E NE E E E E E SE Wind char LT GN GN GN LT GN LT GN Avg clouds B1 B1 SC SC SC B1 B1 B1 B1 B1 B1 B2 B1 B2 B2 B2 PoP 12hr 20 5 5 10 20 10 20 20 Rain shwrs S S S S S S S $$