Point Forecast Matrices
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
505 FOUS51 KLWX 200538 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 138 AM EDT Fri Sep 20 2024 VAZ054-202000- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 138 AM EDT Fri Sep 20 2024 Date Fri 09/20/24 Sat 09/21/24 Sun 09/22/24 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 85 66 83 67 75 Temp 66 67 78 82 82 76 73 69 67 67 75 79 80 75 71 69 68 67 70 72 73 70 Dewpt 60 60 63 61 61 61 63 63 63 63 64 64 63 63 64 64 64 64 64 63 62 60 RH 81 78 60 49 49 60 71 81 87 87 69 60 56 66 79 84 87 90 81 73 68 71 Wind dir N NE E E SE SE SE S S SE S S SE SE SE SE E E E E E E Wind spd 4 4 6 5 6 8 8 5 4 5 8 8 8 9 9 8 8 8 9 8 8 8 Clouds FW FW FW SC SC SC FW SC SC SC SC SC B1 B1 B2 B2 B2 B2 B2 B1 SC SC PoP 12hr 0 0 20 30 5 QPF 12hr 0 0 0.01 0.28 0.01 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C C C Tstms C C C S Heat index 83 83 81 Max heat 83 83 82 Date Mon 09/23/24 Tue 09/24/24 Wed 09/25/24 Thu 09/26/24 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 74 64 75 65 78 64 76 Temp 67 65 72 70 67 64 73 71 68 66 75 71 68 65 74 71 Dewpt 60 60 59 58 59 60 61 62 62 63 64 63 62 62 60 57 PWind dir E SE SE SE SE SE NW NW Wind char LT GN GN GN LT GN GN GN Avg clouds B1 B1 B2 B2 B1 B2 B2 B2 B2 B2 B2 B2 B1 B1 B1 B1 PoP 12hr 5 10 20 30 40 50 50 40 Rain shwrs S S S C C C C C C C C C Tstms S S S S $$ MDZ013-202000- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 138 AM EDT Fri Sep 20 2024 Date Fri 09/20/24 Sat 09/21/24 Sun 09/22/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 83 63 81 63 73 Temp 64 64 76 80 81 74 68 66 65 65 74 79 78 72 67 65 64 64 68 71 72 68 Dewpt 58 60 64 64 63 64 65 64 63 64 65 65 65 66 65 64 63 64 65 64 63 63 RH 81 87 66 58 54 71 90 93 93 97 74 62 64 81 93 97 97100 90 79 73 84 Wind dir N NE E E E SE SE S S SE SE SE SE SE SE SE E E E E E E Wind spd 3 3 6 5 5 6 3 2 2 3 6 6 6 6 5 4 5 5 6 6 6 5 Wind gust 14 Clouds FW FW FW SC SC SC SC FW SC SC SC SC B1 B2 B2 B2 B2 B2 B2 B1 SC SC PoP 12hr 0 0 10 30 5 QPF 12hr 0 0 0 0.21 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S S Tstms S C S Heat index 82 82 Max heat 82 83 Coast Flood Y Y Y Y Y Y Y Y Y Y Y Y Y A A Date Mon 09/23/24 Tue 09/24/24 Wed 09/25/24 Thu 09/26/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 60 72 60 71 62 75 61 75 Temp 62 62 70 68 62 62 70 68 64 64 73 69 64 63 74 67 Dewpt 59 60 60 60 58 60 63 63 62 64 67 66 64 63 62 61 PWind dir E SE SE SE SE SE SW NW Wind char LT LT LT LT LT LT LT LT Avg clouds SC B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 PoP 12hr 5 10 20 30 40 50 50 40 Rain shwrs S S S C C C C C C C C C Tstms S S S $$ MDZ011-202000- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 138 AM EDT Fri Sep 20 2024 Date Fri 09/20/24 Sat 09/21/24 Sun 09/22/24 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 86 67 83 65 76 Temp 67 67 78 83 84 78 73 71 69 67 76 79 80 76 71 69 68 66 71 73 74 71 Dewpt 58 59 61 61 61 62 63 63 63 63 63 63 63 63 64 64 63 62 62 61 60 60 RH 73 75 56 47 46 58 71 76 81 87 64 58 56 64 79 84 84 87 73 66 62 68 Wind dir N NE E E E SE SE S SE SE SE SE SE SE SE SE E E E E E E Wind spd 3 3 5 5 5 6 4 3 3 3 5 6 6 5 5 4 5 5 5 6 6 5 Wind gust 14 Clouds CL FW FW SC SC SC SC FW SC SC SC SC B1 B2 B2 B2 B2 B2 B1 B1 SC SC PoP 12hr 0 0 10 30 5 QPF 12hr 0 0 0 0.19 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S S Tstms C C S Heat index 83 84 81 Max heat 83 84 81 Date Mon 09/23/24 Tue 09/24/24 Wed 09/25/24 Thu 09/26/24 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 63 75 63 74 65 77 64 78 Temp 67 63 73 71 67 63 72 71 67 65 75 72 68 65 76 71 Dewpt 59 58 58 57 58 58 61 61 62 63 64 64 63 61 59 57 PWind dir E SE SE SE SE SE SW NW Wind char LT LT LT LT LT LT LT GN Avg clouds SC B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 B1 PoP 12hr 5 10 20 30 50 50 50 40 Rain shwrs S S S C C C C C C C C C Tstms S S $$ WVZ052-202000- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 138 AM EDT Fri Sep 20 2024 Date Fri 09/20/24 Sat 09/21/24 Sun 09/22/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 81 58 80 60 73 Temp 58 59 71 80 80 70 63 61 60 61 71 77 77 68 64 63 62 62 67 71 72 65 Dewpt 58 58 61 60 59 60 61 61 60 61 64 65 65 65 64 63 62 62 64 63 62 62 RH 100 96 71 51 49 71 93100100100 79 67 67 90100100100100 90 76 71 90 Wind dir NW W E SE SE SE S SE SE SE SE SE SE SE SE SE E E E E E SE Wind spd 2 1 2 3 4 3 2 3 2 3 5 6 6 4 3 3 4 4 5 5 5 2 Wind gust 13 Clouds SC FW CL FW FW FW FW SC SC B1 SC SC B1 B1 B2 B2 B2 B2 B2 B1 SC SC PoP 12hr 0 5 30 30 10 QPF 12hr 0 0 0.05 0.22 0.01 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C S S Tstms C C C S S Obvis PF PF Heat index 81 81 Max heat 81 81 Date Mon 09/23/24 Tue 09/24/24 Wed 09/25/24 Thu 09/26/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 58 70 57 70 59 72 57 71 Temp 61 60 68 65 60 59 69 66 61 61 71 65 61 59 70 63 Dewpt 61 60 62 61 59 59 62 62 61 61 64 62 60 59 57 56 PWind dir SE SE SE SE SE S W NW Wind char LT GN LT LT LT LT LT LT Avg clouds B1 B2 B2 B2 B2 B2 B2 B2 B2 OV B2 B2 B1 B1 B1 SC PoP 12hr 20 30 40 50 60 60 50 40 Rain shwrs S C C C C C C L C C L C C C C Tstms S S S S S S S $$ VAZ506-202000- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 138 AM EDT Fri Sep 20 2024 Date Fri 09/20/24 Sat 09/21/24 Sun 09/22/24 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 62 82 63 74 Temp 61 62 75 82 82 74 68 65 63 64 74 79 80 73 68 66 64 65 69 71 72 68 Dewpt 60 60 64 64 63 63 64 64 63 64 66 67 67 67 66 66 64 65 67 66 65 64 RH 97 93 69 55 53 69 87 97100100 76 67 65 81 93100100100 93 84 79 87 Wind dir N N NE E E SE SE S S S S S SE SE SE SE E E E E E E Wind spd 3 3 3 3 4 4 4 3 2 4 5 5 5 5 4 4 4 4 5 5 5 4 Clouds FW SC FW SC SC SC SC SC B1 B1 SC SC B1 B1 B2 B2 B2 B2 B2 B1 SC SC PoP 12hr 0 0 20 40 5 QPF 12hr 0 0 0.01 0.20 0.01 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C S S Tstms S C C S S Obvis PF Heat index 83 83 82 Max heat 83 84 83 Date Mon 09/23/24 Tue 09/24/24 Wed 09/25/24 Thu 09/26/24 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 72 60 73 62 76 61 75 Temp 63 62 70 69 62 62 71 70 64 64 74 69 64 63 73 67 Dewpt 62 61 63 61 61 61 65 64 64 64 68 66 64 63 64 60 PWind dir SE SE SE SE SE S W NW Wind char LT LT LT LT LT LT LT LT Avg clouds B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 B1 PoP 12hr 10 20 30 40 50 50 50 40 Rain shwrs S S C C S C C C C C C C C C Tstms S S S S $$ VAZ037-202000- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 138 AM EDT Fri Sep 20 2024 Date Fri 09/20/24 Sat 09/21/24 Sun 09/22/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 83 60 81 61 77 Temp 62 62 75 80 80 72 66 64 62 62 73 79 77 71 67 65 63 63 71 75 74 68 Dewpt 61 61 63 61 60 61 62 62 61 62 64 65 65 65 65 64 63 63 64 65 64 63 RH 97 97 66 52 51 68 87 93 97100 73 62 67 81 93 97100100 79 71 71 84 Wind dir NW N NE E SE SE SW S S S S S S S S S N NE NE NE E NE Wind spd 1 1 3 4 4 2 1 1 1 2 5 5 5 3 2 2 3 2 4 5 5 3 Clouds SC FW FW FW FW FW FW SC SC B1 SC SC B1 SC SC B1 B1 B1 B1 B1 SC B1 PoP 12hr 0 0 30 30 10 QPF 12hr 0 0 0.09 0.03 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C S S Tstms S C S S S Obvis PF PF PF Heat index 81 81 Max heat 81 82 Date Mon 09/23/24 Tue 09/24/24 Wed 09/25/24 Thu 09/26/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 61 73 61 73 62 76 59 75 Temp 64 61 71 69 64 61 72 69 64 63 74 69 63 60 73 67 Dewpt 63 61 62 62 62 61 64 64 64 63 65 63 61 59 59 58 PWind dir E SE SE SE SE S W NW Wind char LT LT LT LT LT LT LT LT Avg clouds B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 B1 SC SC PoP 12hr 10 20 20 40 40 50 40 40 Rain shwrs S S S S C C C C C C C C C Tstms S S S S S S S $$ MDZ003-202000- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 138 AM EDT Fri Sep 20 2024 Date Fri 09/20/24 Sat 09/21/24 Sun 09/22/24 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 61 81 62 74 Temp 60 60 75 81 82 73 66 64 62 63 73 78 78 71 66 65 64 64 68 71 73 68 Dewpt 55 56 63 63 62 63 62 62 61 63 66 67 67 67 66 65 63 63 66 66 64 63 RH 84 87 66 54 51 71 87 93 97100 79 69 69 87100100 97 97 93 84 73 84 Wind dir N N SE S SE SE SE S S SE S S S SE SE SE E E E E E E Wind spd 3 3 2 3 4 4 3 4 3 3 4 5 5 4 3 3 4 3 4 5 4 3 Clouds FW CL CL FW FW SC FW SC SC B1 SC SC B1 B2 B2 B2 B2 B2 B2 B1 SC B1 PoP 12hr 0 5 30 40 5 QPF 12hr 0 0 0.03 0.21 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C S S Tstms C C C S Heat index 82 83 Max heat 82 83 Date Mon 09/23/24 Tue 09/24/24 Wed 09/25/24 Thu 09/26/24 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 70 59 70 60 74 59 72 Temp 62 61 68 67 62 61 69 67 62 62 72 68 62 61 70 65 Dewpt 61 60 63 62 60 60 64 63 62 62 67 65 62 61 61 59 PWind dir SE SE SE SE SE S W NW Wind char LT LT LT LT LT LT LT LT Avg clouds B1 B2 B2 B2 B2 B2 B2 B2 B2 OV B2 B2 B2 B1 B1 SC PoP 12hr 10 30 40 50 60 60 50 40 Rain shwrs C C C C C C L L C L C C C C Tstms S S S S S S $$ MDZ017-202000- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 138 AM EDT Fri Sep 20 2024 Date Fri 09/20/24 Sat 09/21/24 Sun 09/22/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 83 65 81 65 76 Temp 67 69 76 80 79 73 68 67 65 67 75 78 78 72 68 67 66 68 70 73 74 69 Dewpt 65 66 64 64 64 64 63 63 63 64 64 64 64 63 64 64 64 65 64 63 62 61 RH 93 90 66 58 60 73 84 87 93 90 69 62 62 73 87 90 93 90 81 71 66 76 Wind dir N NE E E E SE SE SE SE NE E SE SE SE SE SE E E E E E E Wind spd 4 6 6 5 6 10 5 3 3 6 8 9 9 8 8 6 8 8 9 9 10 9 Clouds SC SC FW SC SC SC FW CL FW SC FW SC SC B1 B2 B2 B2 B2 B1 B1 SC SC PoP 12hr 0 0 5 40 5 QPF 12hr 0 0 0 0.06 0.01 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C Tstms S S Heat index 82 Max heat 82 82 Coast Flood Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Date Mon 09/23/24 Tue 09/24/24 Wed 09/25/24 Thu 09/26/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 62 75 64 76 65 78 65 78 Temp 64 65 73 69 65 66 74 71 67 67 76 71 67 67 76 70 Dewpt 59 60 59 58 59 61 61 62 63 65 66 65 65 65 63 62 PWind dir E E SE SE SE S SW NW Wind char LT LT LT LT LT GN LT GN Avg clouds SC B1 B1 B1 B1 B2 B1 B2 B2 B2 B2 B2 B1 B1 B1 B1 PoP 12hr 0 5 10 20 30 40 40 30 Rain shwrs S S C C C C C C C Tstms S C S $$ WVZ502-202000- Petersburg WV 38.99N 79.15W Elev. 963 ft 138 AM EDT Fri Sep 20 2024 Date Fri 09/20/24 Sat 09/21/24 Sun 09/22/24 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 86 58 87 57 83 Temp 59 58 73 83 84 73 65 62 60 60 75 84 82 72 66 62 59 60 72 80 81 71 Dewpt 58 58 62 59 57 59 59 59 59 59 64 63 64 64 64 62 59 60 63 61 60 61 RH 96100 68 44 40 62 81 90 96 96 69 49 55 76 93100100100 73 52 49 71 Wind dir S W E SE SE S S S S S S S S S S SW SW NE NE NE E E Wind spd 1 1 1 3 4 3 2 2 2 2 2 4 4 3 2 2 1 1 2 4 4 3 Clouds B1 SC FW FW SC SC SC SC SC SC SC SC B1 B1 SC SC B1 B1 SC SC SC B1 PoP 12hr 10 5 30 30 10 QPF 12hr 0 0 0.08 0.01 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C Tstms C C C C Obvis F F PF PF PF Heat index 83 85 83 81 82 Max heat 83 84 85 86 81 82 Date Mon 09/23/24 Tue 09/24/24 Wed 09/25/24 Thu 09/26/24 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 59 79 59 79 59 80 55 76 Temp 62 61 77 72 64 61 77 72 62 61 78 69 61 57 75 66 Dewpt 62 60 63 63 62 61 64 63 62 60 62 61 59 57 56 55 PWind dir SE S S SE S SW W W Wind char LT LT LT LT LT LT LT LT Avg clouds B2 B2 B2 B1 B2 B2 B2 B1 B2 B2 B2 B1 B1 B1 SC SC PoP 12hr 20 40 40 60 50 60 40 40 Rain shwrs S C C C C C L C C C L C C C C Tstms S C S S C S S S S $$ MDZ014-202000- Annapolis MD 38.99N 76.49W Elev. 7 ft 138 AM EDT Fri Sep 20 2024 Date Fri 09/20/24 Sat 09/21/24 Sun 09/22/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 80 65 77 65 72 Temp 67 68 74 78 79 74 70 69 67 67 73 76 75 72 69 68 66 66 68 71 71 69 Dewpt 63 64 63 64 63 64 65 64 64 64 64 64 64 64 65 64 64 64 63 63 62 61 RH 87 87 69 62 58 71 84 84 90 90 73 66 69 76 87 87 93 93 84 76 73 76 Wind dir N NE E E E SE SE S S SE SE SE SE SE SE SE E E E E E E Wind spd 3 4 6 5 6 8 5 3 2 4 8 8 9 6 6 6 8 6 9 10 10 8 Wind gust 17 Clouds FW CL FW FW FW FW FW FW SC SC SC SC SC B1 B2 B2 B2 B2 B1 B1 SC SC PoP 12hr 0 0 10 30 5 QPF 12hr 0 0 0 0.13 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C Tstms S S C Coast Flood Y Y Y Y Y Y Y Y Y Y Y Y Y A A Date Mon 09/23/24 Tue 09/24/24 Wed 09/25/24 Thu 09/26/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 62 71 63 71 64 74 64 73 Temp 65 64 70 69 65 64 70 69 66 66 72 69 66 65 72 69 Dewpt 60 60 59 58 59 60 62 62 63 64 66 65 64 63 62 60 PWind dir E SE SE SE SE S SW NW Wind char LT LT LT GN LT GN LT GN Avg clouds SC B1 B2 B1 B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 SC PoP 12hr 5 10 20 30 40 50 50 40 Rain shwrs S S S C C C C C C C C C Tstms S S $$