Point Forecast Matrices
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
460 FOUS51 KLWX 210538 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 137 AM EDT Sat Sep 21 2024 VAZ054-212000- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 137 AM EDT Sat Sep 21 2024 Date Sat 09/21/24 Sun 09/22/24 Mon 09/23/24 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 67 74 63 75 Temp 68 68 76 82 83 75 73 70 69 67 69 72 74 70 68 66 65 63 72 75 74 70 Dewpt 63 64 64 64 65 65 64 65 64 64 63 62 62 61 62 59 59 59 60 60 59 59 RH 84 87 66 55 55 71 73 84 84 90 81 71 66 73 81 78 81 87 66 60 59 68 Wind dir S S S S SE SE SE SE E E E E E E E SE E E E SE SE SE Wind spd 3 3 6 6 6 6 5 6 6 8 8 6 5 5 5 5 4 6 8 8 9 8 Clouds SC SC SC B1 SC B2 B2 B2 OV B2 B2 B2 B1 B1 B1 B2 B2 B2 B2 B2 B1 B2 PoP 12hr 30 50 20 5 20 QPF 12hr 0.03 0.18 0.01 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C S S S S Tstms C S S Obvis PF PF Heat index 83 85 Max heat 83 85 Date Tue 09/24/24 Wed 09/25/24 Thu 09/26/24 Fri 09/27/24 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 73 66 77 65 78 63 77 Temp 66 63 71 70 67 66 74 72 69 65 75 72 66 63 74 71 Dewpt 59 61 63 61 63 64 65 64 64 63 61 59 58 58 57 56 PWind dir SE SE SE SE E N N N Wind char LT GN GN GN LT GN LT GN Avg clouds B2 OV OV OV B2 B2 OV B2 B2 B2 B1 SC SC SC B1 B1 PoP 12hr 50 30 50 50 40 30 20 20 Rain shwrs S C S C C C C C C C C C S S S Tstms S S S $$ MDZ013-212000- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 137 AM EDT Sat Sep 21 2024 Date Sat 09/21/24 Sun 09/22/24 Mon 09/23/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 81 64 73 60 73 Temp 63 63 75 80 80 72 69 66 65 65 67 71 73 68 63 61 61 61 69 72 72 67 Dewpt 62 63 63 63 63 64 64 64 63 63 62 61 60 60 60 58 58 58 58 58 58 58 RH 97100 66 56 56 76 84 93 93 93 84 71 64 76 90 90 90 90 68 61 61 73 Wind dir SE S SE SE SE SE SE SE E E E E E E SE SE E E E E E SE Wind spd 3 2 5 6 6 4 5 6 6 8 8 6 5 4 6 4 4 5 8 8 8 9 Clouds B1 SC B1 B1 SC B2 B2 OV OV OV B2 B1 B1 B1 B1 B2 B2 B2 B2 B2 B1 B2 PoP 12hr 20 60 20 5 10 QPF 12hr 0.06 0.48 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C L C S C Tstms C S S Obvis PF Heat index 81 81 Max heat 81 82 Coast Flood Y Y Y Y Y A A A A A A A A A Date Tue 09/24/24 Wed 09/25/24 Thu 09/26/24 Fri 09/27/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 60 70 62 73 63 76 60 75 Temp 61 61 69 66 64 64 71 70 65 63 73 69 63 62 73 68 Dewpt 58 61 64 63 62 64 67 67 64 63 64 63 60 60 60 60 PWind dir SE SE SE SE E N NE N Wind char LT LT LT LT LT LT LT LT Avg clouds B2 OV B2 OV OV OV OV OV B2 B2 B1 SC SC B1 B1 B1 PoP 12hr 40 30 60 50 50 30 20 20 Rain shwrs C C S C C L C C C C C C S S Tstms S S $$ MDZ011-212000- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 137 AM EDT Sat Sep 21 2024 Date Sat 09/21/24 Sun 09/22/24 Mon 09/23/24 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 75 63 75 Temp 70 68 77 80 80 76 72 70 68 66 71 73 75 73 69 67 65 63 71 75 74 70 Dewpt 62 63 63 63 63 63 64 63 62 61 61 60 59 59 60 58 57 58 58 57 57 57 RH 76 84 62 56 56 64 76 78 81 84 71 64 58 62 73 73 75 84 63 54 55 63 Wind dir SE SE SE SE SE SE SE SE E E E E E E SE SE E E E E SE SE Wind spd 3 2 5 6 6 4 6 8 6 8 6 5 4 4 6 5 4 5 8 8 8 8 Clouds B1 SC B1 SC SC B2 B2 OV OV OV B2 B1 B1 B1 B1 B2 B2 B2 B2 B2 B1 B2 PoP 12hr 20 60 20 5 20 QPF 12hr 0.08 0.42 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C L C S S S C Tstms C S S Obvis PF Heat index 81 81 Max heat 81 82 Coast Flood Y Y Y Y Y Y Y Y Y Y Y Y Y Date Tue 09/24/24 Wed 09/25/24 Thu 09/26/24 Fri 09/27/24 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 73 65 77 65 78 63 77 Temp 66 62 71 70 68 65 75 73 69 65 75 73 66 63 75 72 Dewpt 57 60 61 60 62 62 64 64 64 62 61 59 59 57 57 57 PWind dir SE SE SE SE E N NE N Wind char LT LT LT LT LT LT LT LT Avg clouds B2 OV B2 OV OV OV B2 B2 B2 B2 B1 SC SC B1 B1 B1 PoP 12hr 50 30 60 50 50 30 20 20 Rain shwrs C C S C C L C C C C C C S S Tstms S S $$ WVZ052-212000- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 137 AM EDT Sat Sep 21 2024 Date Sat 09/21/24 Sun 09/22/24 Mon 09/23/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 81 62 72 59 70 Temp 59 61 74 81 80 69 67 64 63 64 68 70 72 64 62 60 59 60 64 68 69 63 Dewpt 59 61 64 65 66 67 64 64 63 63 64 64 63 62 61 60 59 59 60 61 61 60 RH 100100 71 58 62 93 90100100 97 87 81 73 93 97100100 96 87 78 76 90 Wind dir S SE SE SE SE SE SE SE E E E E E E E SE SE SE SE SE SE SE Wind spd 3 3 5 6 6 4 3 3 4 5 5 6 5 4 3 4 6 6 8 9 9 6 Clouds SC SC SC SC B1 B1 B1 B1 OV OV B2 B2 B2 B1 B2 B2 OV OV B2 OV B2 OV PoP 12hr 70 50 30 10 50 QPF 12hr 0.23 0.30 0.02 0 0.01 Snow 12hr 00-00 00-00 00-00 Rain shwrs L C C S S C S S C C C C C Tstms C C S Obvis PF PF PF PF PF Heat index 83 82 Max heat 83 83 Date Tue 09/24/24 Wed 09/25/24 Thu 09/26/24 Fri 09/27/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 58 69 60 72 59 74 55 72 Temp 59 59 67 64 62 62 70 66 61 61 72 67 58 57 70 65 Dewpt 59 59 64 63 62 61 65 64 61 61 61 59 57 57 57 56 PWind dir SE SE SE SE NE NW N N Wind char LT LT LT LT LT LT LT LT Avg clouds B2 OV B2 B2 B2 OV B2 B2 B2 B2 B1 SC SC B1 B1 SC PoP 12hr 60 60 70 50 40 30 20 20 Rain shwrs C L C L L L C C C C C C S S S Tstms S S S $$ VAZ506-212000- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 137 AM EDT Sat Sep 21 2024 Date Sat 09/21/24 Sun 09/22/24 Mon 09/23/24 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 64 73 60 73 Temp 63 64 74 81 81 72 67 66 65 66 69 72 73 68 64 62 61 61 69 72 73 69 Dewpt 63 63 65 65 65 66 65 65 65 63 64 63 63 62 62 61 60 59 60 61 61 60 RH 100 97 74 58 58 81 93 97100 90 84 73 71 81 93 97 97 93 73 68 66 73 Wind dir S S S S S SE SE SE E E E E E E E SE SE SE SE SE SE SE Wind spd 5 5 8 8 8 5 5 5 5 6 6 5 5 4 4 4 4 5 6 8 8 6 Clouds SC SC SC SC B1 B2 B2 B2 B2 OV B2 B2 B2 B2 B1 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 50 50 20 5 30 QPF 12hr 0.10 0.19 0.01 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C S S S S S S C C C Tstms S C S S Obvis PF PF PF PF Heat index 83 83 Max heat 83 84 Date Tue 09/24/24 Wed 09/25/24 Thu 09/26/24 Fri 09/27/24 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 71 63 74 63 76 58 75 Temp 64 61 70 68 64 65 72 70 65 63 74 69 62 60 73 69 Dewpt 59 61 66 65 64 64 69 67 65 63 65 62 60 59 62 60 PWind dir SE SE SE SE E N N N Wind char LT LT LT LT LT LT LT LT Avg clouds B2 OV B2 B2 OV OV B2 B2 B2 B2 B1 SC SC SC B1 B1 PoP 12hr 50 40 70 50 40 30 20 20 Rain shwrs C C S C L L C C C C C C S S S Tstms S S $$ VAZ037-212000- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 137 AM EDT Sat Sep 21 2024 Date Sat 09/21/24 Sun 09/22/24 Mon 09/23/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 82 63 76 61 73 Temp 61 62 74 81 80 71 68 65 64 64 72 75 75 68 65 64 62 61 68 72 73 69 Dewpt 61 62 65 67 67 68 65 65 63 63 66 66 65 64 63 61 61 59 62 64 63 62 RH 100100 74 63 65 90 90100 97 97 81 74 71 87 93 90 97 93 81 76 71 78 Wind dir S S S S S S S S NE NE NE NE NE E E SE SE SE SE S SE SE Wind spd 2 3 6 6 6 4 2 2 2 3 4 5 6 5 3 3 3 4 4 5 5 4 Clouds SC SC SC SC B1 B2 B1 B1 B1 B2 B2 B1 B1 B2 B2 B2 B2 OV OV B2 B2 B2 PoP 12hr 60 50 10 10 30 QPF 12hr 0.23 0.26 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S S S C C C Tstms C C Obvis PF PF PF PF Heat index 83 82 Max heat 83 85 Date Tue 09/24/24 Wed 09/25/24 Thu 09/26/24 Fri 09/27/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 61 73 63 76 61 76 56 73 Temp 65 61 71 69 65 63 74 70 64 61 74 70 61 57 71 67 Dewpt 60 61 66 65 65 63 67 65 64 61 61 59 58 57 57 57 PWind dir SE SE E S NW N N N Wind char LT LT LT LT LT LT LT LT Avg clouds B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 B1 SC SC SC B1 SC PoP 12hr 40 50 60 50 30 30 20 20 Rain shwrs C C S C L C C C C C C C S S S Tstms S S S $$ MDZ003-212000- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 137 AM EDT Sat Sep 21 2024 Date Sat 09/21/24 Sun 09/22/24 Mon 09/23/24 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 63 72 60 71 Temp 62 62 73 79 79 70 66 65 64 64 67 70 72 68 62 62 61 61 66 68 71 67 Dewpt 61 62 64 65 65 66 64 64 63 62 63 62 62 61 60 60 59 58 59 60 59 59 RH 97100 73 62 62 87 93 97 97 93 87 76 71 78 93 93 93 90 78 76 66 75 Wind dir SE SE S S SE SE SE E E E E E E E E SE SE SE SE SE SE SE Wind spd 5 4 8 8 6 4 4 3 4 4 5 5 5 4 3 5 6 8 9 9 10 8 Clouds SC SC SC SC B1 B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 OV OV OV B2 B2 PoP 12hr 60 40 20 10 40 QPF 12hr 0.09 0.20 0.01 0 0.02 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C C S S C C C C C Tstms C C S S Obvis PF PF PF PF PF Date Tue 09/24/24 Wed 09/25/24 Thu 09/26/24 Fri 09/27/24 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 69 61 72 60 75 57 74 Temp 61 60 67 66 62 62 70 68 63 61 72 69 61 59 72 68 Dewpt 58 60 65 64 62 62 67 65 63 61 63 61 59 58 61 59 PWind dir SE SE SE SE E N N N Wind char LT LT LT LT LT LT LT LT Avg clouds B2 OV B2 B2 OV OV B2 B2 B2 B2 B1 SC SC B1 B1 SC PoP 12hr 60 50 70 50 40 30 20 20 Rain shwrs C L C C L L C C C C C C S S S Tstms S S S $$ MDZ017-212000- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 137 AM EDT Sat Sep 21 2024 Date Sat 09/21/24 Sun 09/22/24 Mon 09/23/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 79 66 74 62 75 Temp 65 67 74 78 78 73 69 68 66 67 69 73 74 68 63 63 62 65 71 72 75 68 Dewpt 63 65 64 64 64 64 65 65 64 64 64 63 63 61 60 60 59 59 59 59 59 59 RH 93 93 71 62 62 73 87 90 93 90 84 71 69 78 90 90 90 81 66 64 58 73 Wind dir S SW SE SE SE SE SE SE SE E E E E E E E NE E E E E SE Wind spd 3 3 4 8 8 8 10 9 10 11 10 8 6 9 9 6 6 8 9 8 9 10 Clouds FW FW FW FW FW B2 B2 OV OV B2 B2 B1 B1 B1 B1 B1 B1 B2 B1 B1 B1 B2 PoP 12hr 5 50 20 0 5 QPF 12hr 0 0.15 0.01 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C C S S Tstms S S S Obvis PF Coast Flood Y Y Y Y Y Y Y Y Y Y Y Y Y Date Tue 09/24/24 Wed 09/25/24 Thu 09/26/24 Fri 09/27/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 64 75 66 77 65 78 63 77 Temp 64 66 73 69 67 68 75 72 67 67 76 71 66 65 75 71 Dewpt 59 62 63 62 63 65 67 66 65 65 64 62 61 62 61 59 PWind dir SE SE SE SE SE N NE N Wind char GN GN LT GN LT GN LT GN Avg clouds B1 OV B2 B2 B2 B2 B2 B2 B2 B1 B1 SC SC SC SC SC PoP 12hr 40 10 40 50 40 30 20 20 Rain shwrs C S C C C C C C C S S S Tstms S S $$ WVZ502-212000- Petersburg WV 38.99N 79.15W Elev. 963 ft 137 AM EDT Sat Sep 21 2024 Date Sat 09/21/24 Sun 09/22/24 Mon 09/23/24 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 80 61 76 Temp 59 59 76 85 83 73 66 62 60 60 70 78 79 71 64 63 62 62 69 75 76 70 Dewpt 58 59 62 61 65 66 63 62 59 59 63 62 62 63 62 62 60 60 61 63 63 64 RH 96100 62 45 55 79 90100 96 96 78 58 56 76 93 97 93 93 76 66 64 81 Wind dir S S E E SE S SW SW SW NW N E E E E SE SE SE S SE SE SE Wind spd 3 2 1 3 4 2 2 2 1 1 2 3 4 3 2 3 3 4 5 5 5 4 Clouds FW FW SC SC B2 SC SC SC SC B1 B1 SC SC B1 B2 B2 OV OV B2 B2 B2 OV PoP 12hr 70 30 10 20 60 QPF 12hr 0.17 0.01 0 0 0.04 Snow 12hr 00-00 00-00 00-00 Rain shwrs C L C C S S C C L L C Tstms C C C S S Obvis PF PF PF PF PF Heat index 85 85 Max heat 85 86 81 Date Tue 09/24/24 Wed 09/25/24 Thu 09/26/24 Fri 09/27/24 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 78 60 80 57 79 53 76 Temp 63 61 77 71 64 62 78 72 62 57 76 70 58 55 74 69 Dewpt 62 61 66 65 64 62 64 63 61 57 58 57 56 55 56 56 PWind dir S SE S SW W NW W N Wind char LT LT LT LT LT LT LT LT Avg clouds OV B2 B2 B2 B2 B2 B2 B1 B2 B1 SC SC SC SC B1 SC PoP 12hr 70 70 70 50 30 30 20 20 Rain shwrs C L C L L L C C C S C C S S S Tstms S C C S S $$ MDZ014-212000- Annapolis MD 38.99N 76.49W Elev. 7 ft 137 AM EDT Sat Sep 21 2024 Date Sat 09/21/24 Sun 09/22/24 Mon 09/23/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 78 65 73 63 72 Temp 68 68 73 77 78 74 69 68 66 65 68 71 73 70 66 65 65 63 68 71 72 68 Dewpt 64 64 63 63 64 65 65 63 63 63 63 62 62 61 61 59 59 59 59 59 58 58 RH 87 87 71 62 62 74 87 84 90 93 84 73 68 73 84 81 81 87 73 66 61 70 Wind dir S S SE SE SE SE SE SE E E E E NE E SE E E E E E E SE Wind spd 4 3 5 6 6 5 9 9 9 9 8 6 5 6 8 5 6 8 9 9 9 11 Clouds B1 SC SC SC SC B2 B2 B2 OV B2 B2 B1 B1 B1 B1 B2 B2 B2 B1 B2 B1 B2 PoP 12hr 10 60 20 0 10 QPF 12hr 0 0.44 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C L C S S Tstms C S S Obvis PF Coast Flood Y Y Y Y Y A A A A A A A A A Date Tue 09/24/24 Wed 09/25/24 Thu 09/26/24 Fri 09/27/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 63 71 65 73 65 74 62 73 Temp 64 63 70 68 67 66 71 71 67 65 73 71 66 63 72 70 Dewpt 59 62 63 62 63 64 66 65 65 63 63 61 60 59 59 59 PWind dir SE SE SE SE E N NE N Wind char GN GN LT GN LT GN LT GN Avg clouds B2 OV B2 B2 B2 OV B2 B2 B2 B2 B1 SC SC B1 B1 SC PoP 12hr 40 20 50 50 50 30 20 20 Rain shwrs S C S S C C C C C C C C S S Tstms S S $$