Point Forecast Matrices
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
417 FOUS51 KLWX 210838 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 438 AM EDT Sat Sep 21 2024 VAZ054-212000- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 438 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 67 75 63 75 Temp 69 67 75 82 82 74 70 69 68 67 69 72 75 71 68 65 64 64 72 73 75 70 Dewpt 63 64 64 63 64 65 65 65 64 64 63 62 62 61 62 60 60 60 60 60 60 60 RH 81 90 69 53 55 74 84 87 87 90 81 71 64 71 81 84 87 87 66 64 60 71 Wind dir S S S S S SE S SE E E E E E E E SE SE E SE SE SE SE Wind spd 4 3 6 6 6 6 5 5 6 8 8 6 5 5 5 5 5 6 8 8 8 9 Clouds B1 SC SC SC SC B2 B2 B2 OV B2 B2 B1 B1 B1 B1 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 30 60 20 0 10 QPF 12hr 0.02 0.24 0.02 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs L C S C S S Tstms C S S Obvis PF PF Heat index 83 83 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 64 73 66 77 65 78 63 77 Temp 67 64 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 GN GN GN GN LT GN LT GN Avg clouds B2 B2 OV OV B2 B2 OV B2 B2 B2 B1 SC SC SC B1 B1 PoP 12hr 40 50 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 $$ MDZ013-212000- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 438 AM EDT Sat Sep 21 2024 Date Sat 09/21/24 Sun 09/22/24 Mon 09/23/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 80 64 74 60 73 Temp 67 65 75 80 80 72 69 66 65 65 68 72 74 68 63 62 60 61 68 72 72 67 Dewpt 63 63 63 63 63 63 64 64 63 63 62 61 60 60 61 59 58 58 59 58 59 58 RH 87 93 66 56 56 73 84 93 93 93 81 68 62 76 93 90 93 90 73 61 64 73 Wind dir S S S SE SE SE SE SE E E E E E E SE SE E E E SE SE SE Wind spd 3 2 5 6 6 4 5 6 6 8 8 5 4 4 6 5 4 5 6 8 8 8 Clouds B2 SC B1 B1 SC OV B2 OV OV OV B2 B1 B1 B1 B1 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 20 60 20 5 10 QPF 12hr 0.01 0.59 0.01 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C S C Tstms C S S Obvis PF Heat index 81 81 Max heat 81 81 Coast Flood Y Y Y W W W W W W W W W W W W Date Tue 09/24/24 Wed 09/25/24 Thu 09/26/24 Fri 09/27/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 61 70 62 73 63 76 60 75 Temp 61 61 69 66 64 64 71 70 65 63 73 69 63 62 73 68 Dewpt 58 61 64 63 62 64 67 67 64 63 64 63 60 60 60 60 PWind dir SE SE SE SE E N NE N Wind char LT LT LT LT LT LT LT LT Avg clouds B2 OV B2 OV OV OV OV OV B2 B2 B1 SC SC B1 B1 B1 PoP 12hr 40 30 60 50 50 30 20 20 Rain shwrs C C S C C L C C C C C C S S Tstms S S $$ MDZ011-212000- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 438 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 66 75 63 75 Temp 70 68 76 79 79 75 72 70 68 66 69 74 75 71 69 67 65 63 71 74 75 70 Dewpt 63 63 63 63 63 63 65 63 62 62 61 60 59 60 61 59 58 58 58 58 58 58 RH 78 84 64 58 58 66 79 78 81 87 76 62 58 68 76 75 78 84 63 57 55 66 Wind dir S SE SE SE SE SE SE SE E E E E E E SE SE E E E SE SE SE Wind spd 3 2 5 6 6 4 5 8 6 8 6 5 4 3 6 5 4 5 8 6 8 8 Clouds B2 SC B1 SC SC OV B2 OV OV OV B2 B1 B1 B1 B1 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 20 60 20 5 10 QPF 12hr 0.01 0.50 0.01 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C S C Tstms C S S Obvis PF Coast Flood Y Y Y 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 63 73 65 77 65 78 63 77 Temp 66 63 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 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 $$ WVZ052-212000- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 438 AM EDT Sat Sep 21 2024 Date Sat 09/21/24 Sun 09/22/24 Mon 09/23/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 80 62 72 59 70 Temp 59 61 73 80 79 70 67 65 63 64 67 70 72 65 62 60 59 60 64 68 70 65 Dewpt 59 60 64 65 65 67 65 64 63 62 64 64 63 62 61 60 59 60 60 62 62 61 RH 100 97 73 60 62 90 93 97100 93 90 81 73 90 97100100100 87 81 76 87 Wind dir S SE SE SE SE SE S SE E E E E E E E SE SE SE SE SE SE SE Wind spd 1 3 5 6 5 4 3 3 4 5 6 5 5 4 3 4 6 6 9 9 9 6 Clouds FW SC FW SC B1 B1 B1 B1 OV OV B2 B2 B2 B1 B2 B2 OV OV OV OV OV OV PoP 12hr 70 60 30 10 50 QPF 12hr 0.24 0.28 0.02 0 0.03 Snow 12hr 00-00 00-00 00-00 Rain shwrs C L C S S C S S C C C C C Tstms C C S Obvis PF PF PF PF Heat index 82 Max heat 82 82 Date Tue 09/24/24 Wed 09/25/24 Thu 09/26/24 Fri 09/27/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 59 69 60 72 59 74 55 72 Temp 61 60 67 64 62 62 70 66 61 61 72 67 58 57 70 65 Dewpt 60 59 64 63 62 61 65 64 61 61 61 59 57 57 57 56 PWind dir SE SE SE SE NE NW N N Wind char LT LT LT LT LT LT LT LT Avg clouds OV OV B2 B2 B2 OV B2 B2 B2 B2 B1 SC SC B1 B1 SC PoP 12hr 60 70 70 50 40 30 20 20 Rain shwrs C L C L L L C C C C C C S S S Tstms S S S $$ VAZ506-212000- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 438 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 66 65 74 80 81 71 67 66 65 65 68 72 72 67 63 62 61 61 67 71 73 68 Dewpt 62 63 65 65 65 67 66 65 65 64 64 63 63 62 62 61 60 60 61 62 61 60 RH 87 93 74 60 58 87 97 97100 97 87 73 73 84 97 97 97 97 81 73 66 76 Wind dir S S S S S SE SE SE E E E E E E SE SE SE SE SE SE SE SE Wind spd 8 5 6 8 6 5 4 4 5 6 6 5 4 4 4 4 5 6 8 8 9 6 Clouds SC B1 SC SC B1 B2 B2 B1 OV OV B2 B2 B2 B2 B1 B2 B2 B2 B2 B2 B2 OV PoP 12hr 60 60 20 5 30 QPF 12hr 0.07 0.20 0.02 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs L C S S S C C C Tstms C S Obvis PF PF PF PF PF Heat index 82 83 Max heat 82 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 61 71 63 74 63 76 58 75 Temp 64 62 70 68 64 65 72 70 65 63 74 69 62 60 73 69 Dewpt 60 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 OV OV B2 B2 OV OV B2 B2 B2 B2 B1 SC SC SC B1 B1 PoP 12hr 50 50 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 $$ VAZ037-212000- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 438 AM EDT Sat Sep 21 2024 Date Sat 09/21/24 Sun 09/22/24 Mon 09/23/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 81 63 76 62 73 Temp 63 61 73 80 79 71 68 65 64 63 72 76 75 69 66 65 64 62 68 71 73 68 Dewpt 62 61 65 66 66 68 66 65 63 63 66 66 65 64 63 62 61 60 61 63 62 62 RH 97100 76 62 64 90 93100 97100 81 71 71 84 90 90 90 93 78 76 68 81 Wind dir S S S S S S S SW NE NE NE NE NE E E SE SE SE SE S S SE Wind spd 1 3 6 6 6 3 2 2 2 3 4 5 6 4 3 3 3 4 5 6 4 4 Clouds FW SC SC SC B1 OV B1 B1 B1 B2 B2 B2 B1 B2 B2 OV B2 B2 B2 OV OV OV PoP 12hr 60 60 10 10 40 QPF 12hr 0.21 0.27 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C L S S S C C C Tstms C C Obvis PF PF PF PF Heat index 82 Max heat 82 83 Date Tue 09/24/24 Wed 09/25/24 Thu 09/26/24 Fri 09/27/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 61 73 63 76 61 76 56 73 Temp 64 61 71 69 65 63 74 70 64 61 74 70 61 57 71 67 Dewpt 61 61 66 65 65 63 67 65 64 61 61 59 58 57 57 57 PWind dir SE SE E S NW N N N Wind char LT LT LT LT LT LT LT LT Avg clouds OV B2 B2 B2 B2 B2 B2 B2 B1 B1 B1 SC SC SC B1 SC PoP 12hr 40 50 60 50 30 30 20 20 Rain shwrs C C S C L C C C C C C C S S S Tstms S S S $$ MDZ003-212000- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 438 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 64 62 73 79 78 70 66 65 65 65 68 71 72 68 63 61 61 60 65 70 71 67 Dewpt 61 61 64 64 65 66 65 64 63 62 62 63 62 61 60 60 60 59 60 61 61 60 RH 90 97 73 60 64 87 97 97 93 90 81 76 71 78 90 97 97 96 84 73 71 78 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 3 4 6 8 6 4 4 3 4 4 5 5 4 4 3 5 6 9 10 10 9 8 Clouds FW SC SC SC B1 B1 B2 B2 B2 B2 B2 B2 B2 B1 B2 B2 OV OV OV OV OV OV PoP 12hr 60 50 20 10 50 QPF 12hr 0.10 0.20 0.02 0 0.03 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C S S S C C C C L Tstms C C S S Obvis 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 OV OV B2 B2 OV OV B2 B2 B2 B2 B1 SC SC B1 B1 SC PoP 12hr 60 60 70 50 40 30 20 20 Rain shwrs L L C C L L C C C C C C S S S Tstms S S S $$ MDZ017-212000- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 438 AM EDT Sat Sep 21 2024 Date Sat 09/21/24 Sun 09/22/24 Mon 09/23/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 78 66 73 62 75 Temp 65 68 75 77 77 72 69 68 67 68 70 73 73 69 63 62 62 65 70 73 75 68 Dewpt 62 64 64 64 64 64 66 65 64 64 64 63 63 61 60 60 59 60 59 58 58 59 RH 90 87 69 64 64 76 90 90 90 87 81 71 71 76 90 93 90 84 68 59 55 73 Wind dir S SW SE SE SE SE SE SE SE E E E E E E E E E E E SE E Wind spd 1 3 4 8 8 8 10 9 10 11 10 8 5 9 9 6 5 6 8 8 8 10 Clouds FW FW SC FW FW B2 B2 B2 B2 B2 B2 B1 B1 B1 SC B1 B1 B1 B1 B1 B1 B2 PoP 12hr 5 50 20 0 5 QPF 12hr 0 0.16 0.02 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C C S S Tstms S S S Obvis PF Coast Flood Y Y Y Y Y Y Y Y Y Y Y Y Y Date Tue 09/24/24 Wed 09/25/24 Thu 09/26/24 Fri 09/27/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 64 75 66 77 65 78 63 77 Temp 64 66 73 69 67 68 75 72 67 67 76 71 66 65 75 71 Dewpt 59 62 63 62 63 65 67 66 65 65 64 62 61 62 61 59 PWind dir SE SE SE SE SE N NE N Wind char GN GN LT GN LT GN LT GN Avg clouds B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 SC SC SC SC SC PoP 12hr 30 50 40 50 40 30 20 20 Rain shwrs C S C C C C C C C S S S Tstms S S $$ WVZ502-212000- Petersburg WV 38.99N 79.15W Elev. 963 ft 438 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 85 59 79 61 76 Temp 59 61 77 84 81 72 66 62 60 60 69 77 78 70 65 63 62 62 69 75 75 69 Dewpt 58 58 62 60 65 66 63 62 59 60 63 63 63 63 63 62 61 61 61 63 63 64 RH 96 90 60 44 58 81 90100 96100 81 62 60 78 93 97 97 97 76 66 66 84 Wind dir N S E E E S S SW SW NW NE E E E E SE S SE S S S SE Wind spd 0 2 1 3 5 3 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 B1 B1 B2 B2 OV OV OV B2 B2 OV PoP 12hr 70 40 10 20 70 QPF 12hr 0.22 0.02 0 0 0.06 Snow 12hr 00-00 00-00 00-00 Rain shwrs C L C C S S C C L L L Tstms C C C S S Obvis PF PF PF PF Heat index 84 83 Max heat 84 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 78 60 80 57 79 53 76 Temp 63 62 77 71 64 62 78 72 62 57 76 70 58 55 74 69 Dewpt 63 61 66 65 64 62 64 63 61 57 58 57 56 55 56 56 PWind dir SE 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 80 70 50 30 30 20 20 Rain shwrs L L C L L L C C C S C C S S S Tstms S C C S S $$ MDZ014-212000- Annapolis MD 38.99N 76.49W Elev. 7 ft 438 AM EDT Sat Sep 21 2024 Date Sat 09/21/24 Sun 09/22/24 Mon 09/23/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 78 65 73 63 72 Temp 68 68 74 77 78 74 69 68 66 65 66 70 73 69 66 66 64 64 68 71 72 68 Dewpt 65 64 64 63 63 65 65 63 63 63 63 62 62 61 61 59 60 59 59 60 59 59 RH 90 87 71 62 60 74 87 84 90 93 90 76 68 76 84 78 87 84 73 68 64 73 Wind dir S S SE SE SE S SE SE E E E E NE E SE SE E E E SE SE SE Wind spd 3 3 6 6 6 5 9 9 9 9 8 6 5 5 9 6 5 6 8 8 9 10 Clouds B2 SC SC FW SC OV B2 OV OV B2 B2 B1 SC B1 B1 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 10 60 20 0 10 QPF 12hr 0 0.53 0.01 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C S S Tstms C S S Obvis PF PF Coast Flood Y Y Y W W W W W W W W W W W W Date Tue 09/24/24 Wed 09/25/24 Thu 09/26/24 Fri 09/27/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 63 71 65 73 65 74 62 73 Temp 65 63 70 68 67 66 71 71 67 65 73 71 66 63 72 70 Dewpt 59 62 63 62 63 64 66 65 65 63 63 61 60 59 59 59 PWind dir SE SE SE SE E N NE N Wind char GN GN LT GN LT GN LT GN Avg clouds B2 B2 B2 B2 B2 OV B2 B2 B2 B2 B1 SC SC B1 B1 SC PoP 12hr 30 30 50 50 50 30 20 20 Rain shwrs S C S S C C C C C C C C S S Tstms S S $$