Point Forecast Matrices
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
454 FOUS51 KLWX 201038 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 638 AM EDT Mon May 20 2024 VAZ054-202000- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 638 AM EDT Mon May 20 2024 Date Mon 05/20/24 Tue 05/21/24 Wed 05/22/24 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 61 82 64 88 Temp 63 71 76 79 73 68 64 63 63 74 79 81 75 69 66 65 67 78 84 87 81 Dewpt 59 61 61 62 62 61 59 58 59 60 60 60 62 61 60 59 61 64 66 66 67 RH 87 71 60 56 68 78 84 84 87 62 52 49 64 76 81 81 81 62 55 50 63 Wind dir SE SE SE SE SE S S S S S S S S S S S S S S S S Wind spd 3 3 4 5 5 4 4 3 4 5 6 8 8 6 6 5 5 6 8 9 9 Clouds B2 B1 SC SC SC FW FW B1 B1 SC FW FW FW FW FW SC SC SC SC SC SC PoP 12hr 0 0 0 0 5 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Obvis F F Heat index 82 86 89 83 Max heat 81 82 86 90 Date Thu 05/23/24 Fri 05/24/24 Sat 05/25/24 Sun 05/26/24 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 71 87 67 82 64 78 63 81 Temp 74 72 87 77 69 69 82 77 67 65 77 73 65 65 79 75 Dewpt 66 65 65 65 64 61 58 60 57 58 57 58 59 60 61 61 PWind dir S SW W NW SE E E SE Wind char GN LT LT LT LT LT LT LT Avg clouds SC SC SC B2 B1 SC SC SC B1 B1 B1 SC SC B1 B1 B1 PoP 12hr 10 50 40 30 40 40 30 40 Rain shwrs C C S C C C C C C S S C Tstms C C S S C S S $$ MDZ013-202000- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 638 AM EDT Mon May 20 2024 Date Mon 05/20/24 Tue 05/21/24 Wed 05/22/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 77 59 81 61 86 Temp 60 69 74 76 71 65 62 60 61 73 78 80 74 67 63 63 66 78 83 85 78 Dewpt 57 59 61 61 60 60 58 57 58 60 60 60 59 60 59 58 60 63 65 66 66 RH 90 70 64 60 68 84 87 90 90 64 54 51 59 78 87 84 81 60 55 53 67 Wind dir SE SE SE SE SE S S S S S S S S S S S S S S S S Wind spd 3 4 4 6 4 3 3 3 3 4 6 9 6 5 4 3 3 5 8 9 6 Clouds B2 B1 SC SC FW FW FW SC B1 SC FW FW FW FW SC SC B1 SC SC SC SC PoP 12hr 0 0 0 0 5 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Obvis F F Heat index 81 85 87 Max heat 82 85 88 Coast Flood Y Y Y Date Thu 05/23/24 Fri 05/24/24 Sat 05/25/24 Sun 05/26/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 69 87 63 81 61 77 59 78 Temp 72 70 87 75 67 66 80 74 63 63 75 70 60 61 76 72 Dewpt 65 66 66 67 64 61 57 60 56 58 56 59 59 60 61 61 PWind dir S SW W NW W SE E SE Wind char LT LT LT LT LT LT LT LT Avg clouds SC SC SC B1 B1 SC SC SC B1 B1 B1 SC SC B1 B1 SC PoP 12hr 10 50 40 30 40 40 30 40 Rain shwrs C C S C C C C C C S C C Tstms C C S S S S $$ MDZ011-202000- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 638 AM EDT Mon May 20 2024 Date Mon 05/20/24 Tue 05/21/24 Wed 05/22/24 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 63 83 65 87 Temp 63 71 76 79 73 68 65 65 65 75 80 82 75 70 67 67 68 78 84 86 80 Dewpt 57 59 60 60 60 61 59 58 58 59 60 60 59 60 59 59 60 63 65 65 66 RH 81 66 58 52 64 78 81 78 78 58 51 47 58 71 75 75 76 60 53 50 62 Wind dir SE SE SE SE SE S S S S S SE SE S S S S S S S S S Wind spd 3 4 4 6 4 3 3 3 2 5 8 9 6 5 3 3 3 5 8 9 8 Clouds B2 B1 SC SC FW FW FW SC B1 SC FW FW FW FW SC SC B1 SC SC SC SC PoP 12hr 0 0 0 0 5 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Heat index 81 82 86 88 82 Max heat 81 81 83 86 89 Date Thu 05/23/24 Fri 05/24/24 Sat 05/25/24 Sun 05/26/24 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 72 91 69 85 66 82 66 83 Temp 74 73 91 82 74 69 85 80 72 66 81 79 70 66 82 78 Dewpt 65 64 65 65 62 58 56 57 55 56 55 57 57 58 59 59 PWind dir S SW W NW NW SE E SE Wind char LT LT LT LT LT LT LT LT Avg clouds SC SC SC B1 B1 SC SC SC B1 B1 B1 SC SC B1 B1 SC PoP 12hr 10 50 40 30 40 40 30 40 Rain shwrs C C S C C C C C C C C C Tstms C C S S S $$ WVZ052-202000- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 638 AM EDT Mon May 20 2024 Date Mon 05/20/24 Tue 05/21/24 Wed 05/22/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 80 57 83 60 87 Temp 57 71 77 79 74 65 60 58 60 75 80 82 76 68 64 62 65 77 83 86 79 Dewpt 57 62 61 60 62 59 58 55 59 64 63 64 64 61 60 58 62 65 65 67 67 RH 100 73 58 52 66 81 93 90 96 69 56 55 66 78 87 87 90 67 55 53 67 Wind dir S S SE SE SE S S S S S S S S S S S S S S S S Wind spd 1 3 4 4 4 3 3 2 2 5 8 9 6 4 3 2 2 4 6 8 5 Clouds B1 SC SC SC FW FW FW SC SC FW FW FW FW FW FW FW SC SC SC B1 B1 PoP 12hr 0 0 5 0 10 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S Obvis F+ F F F Heat index 81 83 85 89 Max heat 81 81 84 85 89 Dense Fog Y Date Thu 05/23/24 Fri 05/24/24 Sat 05/25/24 Sun 05/26/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 67 82 59 78 56 75 56 77 Temp 70 68 82 73 62 64 77 71 59 60 73 70 58 61 76 72 Dewpt 64 64 64 62 59 57 56 57 54 55 55 57 56 57 60 60 PWind dir SW W W NW S SE SE SE Wind char LT LT LT LT LT LT LT LT Avg clouds B1 B1 B1 B2 B1 SC SC SC SC B1 B1 SC SC B1 B1 SC PoP 12hr 20 50 30 40 40 50 30 50 Rain shwrs S S C C S S C C C C C C C C C Tstms S C C S S C S S $$ VAZ506-202000- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 638 AM EDT Mon May 20 2024 Date Mon 05/20/24 Tue 05/21/24 Wed 05/22/24 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 79 59 82 62 87 Temp 59 71 76 78 74 66 62 61 62 74 79 81 75 69 65 63 66 78 84 86 80 Dewpt 59 62 61 60 61 61 59 58 59 62 61 62 62 62 61 60 62 65 66 67 67 RH 100 73 60 54 64 84 90 90 90 66 54 53 64 78 87 90 87 64 55 53 65 Wind dir SE SE SE SE S S S S S S S S S S S S S S S S S Wind spd 2 3 3 4 5 4 3 3 4 5 6 8 6 6 5 4 4 5 6 6 6 Clouds B2 B1 SC SC SC FW FW SC B1 FW FW FW FW FW FW SC SC SC SC SC B1 PoP 12hr 0 0 0 0 5 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Obvis F+ F F Heat index 82 86 89 82 Max heat 83 86 90 Dense Fog Y Date Thu 05/23/24 Fri 05/24/24 Sat 05/25/24 Sun 05/26/24 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 69 86 62 80 59 77 59 80 Temp 74 70 86 76 65 65 79 74 63 61 76 71 61 62 78 74 Dewpt 65 66 67 66 63 61 59 61 57 59 58 60 59 61 62 63 PWind dir S W NW NW SE SE E SE Wind char LT LT LT LT LT LT LT LT Avg clouds SC SC SC B1 B1 SC SC SC B1 B1 B1 SC SC B1 B1 SC PoP 12hr 10 50 40 30 50 40 40 40 Rain shwrs C C S C C C C C C S C C Tstms C C S S C S S $$ VAZ037-202000- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 638 AM EDT Mon May 20 2024 Date Mon 05/20/24 Tue 05/21/24 Wed 05/22/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 81 59 84 63 89 Temp 61 73 78 80 74 67 62 61 62 75 80 83 77 70 66 64 67 79 85 88 81 Dewpt 58 61 60 60 62 60 59 57 59 62 62 62 63 62 61 59 61 64 64 65 65 RH 90 66 54 51 66 78 90 87 90 64 54 49 62 76 84 84 81 60 50 47 58 Wind dir S SE SE SE SE S S S S S S S S S S S SW S S S S Wind spd 1 3 4 4 4 2 2 2 2 4 6 6 4 3 3 3 3 5 6 8 6 Clouds B1 SC SC SC FW FW FW SC SC FW FW SC SC FW FW FW FW FW SC B1 B1 PoP 12hr 0 0 5 0 5 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Obvis F+ F F F Heat index 81 81 84 86 90 83 Max heat 82 81 84 86 90 Dense Fog Y Date Thu 05/23/24 Fri 05/24/24 Sat 05/25/24 Sun 05/26/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 68 88 65 83 63 80 63 83 Temp 72 70 88 79 69 66 82 77 65 64 79 75 65 65 82 78 Dewpt 63 63 64 63 62 61 60 61 58 59 59 59 58 59 61 61 PWind dir SW SW W E N E NE SE Wind char LT LT LT LT LT LT LT LT Avg clouds SC SC SC B1 B2 B1 SC B1 B1 B1 B1 B1 SC B1 SC SC PoP 12hr 5 50 40 50 50 50 30 50 Rain shwrs C C S C C C C C C S S C Tstms C C C C C S S C $$ MDZ003-202000- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 638 AM EDT Mon May 20 2024 Date Mon 05/20/24 Tue 05/21/24 Wed 05/22/24 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 61 83 63 87 Temp 61 72 77 80 75 68 64 62 63 75 80 82 76 70 66 64 67 77 83 86 79 Dewpt 59 62 61 61 61 60 59 57 60 64 63 64 64 62 60 59 62 66 66 67 67 RH 93 71 58 52 62 76 84 84 90 69 56 55 66 76 81 84 84 69 57 53 67 Wind dir S S S S S S S S S S S S S S S S S S S S S Wind spd 2 3 4 4 5 5 4 4 4 6 8 9 6 6 5 3 4 5 8 8 6 Clouds SC SC SC SC FW FW FW SC SC FW FW FW FW FW FW FW SC SC SC B1 B2 PoP 12hr 0 0 5 0 20 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S Tstms S S Obvis F+ F F Heat index 81 81 83 85 89 Max heat 82 81 84 85 90 Dense Fog Y Date Thu 05/23/24 Fri 05/24/24 Sat 05/25/24 Sun 05/26/24 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 67 82 59 78 56 75 58 77 Temp 71 68 82 72 63 63 77 72 59 59 74 70 60 61 76 71 Dewpt 65 66 66 64 59 57 56 57 54 56 57 59 57 59 61 61 PWind dir S W NW W E SE E SE Wind char LT LT LT LT LT LT LT LT Avg clouds B1 B1 B1 B2 B1 SC SC SC SC SC B1 B1 B1 B1 B1 SC PoP 12hr 20 50 30 30 40 50 30 50 Rain shwrs S S C C S C C C C C C C C C Tstms S C C S S S $$ MDZ017-202000- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 638 AM EDT Mon May 20 2024 Date Mon 05/20/24 Tue 05/21/24 Wed 05/22/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 73 58 74 62 81 Temp 59 66 69 72 68 63 60 60 60 68 72 73 68 64 63 63 65 74 78 80 74 Dewpt 56 57 59 59 59 59 57 56 57 60 60 59 60 59 59 59 61 64 65 65 64 RH 90 73 70 64 73 87 90 87 90 76 66 62 76 84 87 87 87 71 64 60 71 Wind dir NE E E E SE SE SE S S SE SE SE S S S S S S S SE S Wind spd 5 4 5 3 4 6 5 3 3 4 9 9 9 8 6 5 6 8 10 10 9 Clouds B2 B1 SC FW SC FW FW SC B1 SC FW FW FW SC SC SC SC SC SC SC SC PoP 12hr 0 0 0 0 0 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Obvis F F Heat index 82 Max heat 83 Coast Flood Y Y Y Y Y Y Y Date Thu 05/23/24 Fri 05/24/24 Sat 05/25/24 Sun 05/26/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 69 84 65 79 63 77 62 78 Temp 70 70 84 73 67 68 79 71 64 66 77 70 62 65 77 72 Dewpt 63 64 66 65 64 62 61 61 59 61 60 61 61 62 63 62 PWind dir S S W NW S SE SE SE Wind char GN LT LT LT LT LT LT LT Avg clouds SC SC SC B1 B2 B1 SC SC B1 B1 B1 B1 SC B1 B1 SC PoP 12hr 5 30 40 30 40 40 30 30 Rain shwrs C C S C C C C C C C C C Tstms C C S S C S $$ WVZ502-202000- Petersburg WV 38.99N 79.15W Elev. 963 ft 638 AM EDT Mon May 20 2024 Date Mon 05/20/24 Tue 05/21/24 Wed 05/22/24 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 56 86 61 89 Temp 59 74 81 83 75 64 60 58 60 77 83 85 76 67 64 62 65 79 85 88 78 Dewpt 58 60 58 58 60 58 57 56 59 61 61 62 64 62 61 59 61 61 61 63 64 RH 96 62 46 43 60 81 90 93 96 58 47 46 66 84 90 90 87 54 45 43 62 Wind dir S SE E E SE S S S S SE S S S S S S S SW SW SW SW Wind spd 1 2 3 4 3 2 2 2 2 2 2 4 3 2 2 2 2 3 4 4 3 Clouds FW FW FW FW FW FW FW FW FW FW SC SC SC FW FW SC SC SC B1 B1 B1 PoP 12hr 0 0 20 0 20 QPF 12hr 0 0 0.01 0 0.03 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S Tstms S S S Obvis F+ F Heat index 81 83 83 86 85 89 Max heat 81 84 83 86 85 89 Dense Fog Y Date Thu 05/23/24 Fri 05/24/24 Sat 05/25/24 Sun 05/26/24 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 65 82 58 80 57 79 58 83 Temp 69 66 82 74 62 61 78 73 60 59 77 72 59 62 81 74 Dewpt 62 64 65 63 59 58 59 60 56 58 59 61 59 60 62 63 PWind dir SW W W SW S SW S S Wind char LT LT LT LT LT LT LT LT Avg clouds B1 B1 B1 B2 B1 SC SC SC B1 B1 B1 B1 SC B1 B1 SC PoP 12hr 20 60 30 50 40 60 40 50 Rain shwrs S C L C S C C C C C L C S C C Tstms C C C S S C C S S C $$ MDZ014-202000- Annapolis MD 38.99N 76.49W Elev. 7 ft 638 AM EDT Mon May 20 2024 Date Mon 05/20/24 Tue 05/21/24 Wed 05/22/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 74 60 76 62 82 Temp 61 67 70 73 70 65 62 62 62 69 74 75 71 66 64 64 66 74 79 81 76 Dewpt 57 59 60 60 61 60 59 58 58 61 61 60 59 60 59 59 61 64 66 66 65 RH 87 75 71 64 73 84 90 87 87 76 64 60 66 81 84 84 84 71 64 60 69 Wind dir E SE SE SE S SE S S S S SE S S S S S S S S S S Wind spd 3 4 5 5 4 5 4 4 4 6 9 10 10 9 6 5 5 8 11 11 9 Clouds B2 B1 SC FW FW FW FW SC B2 SC FW FW FW FW SC SC SC SC SC SC SC PoP 12hr 0 0 0 0 0 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Obvis F Heat index 83 Max heat 84 Coast Flood Y Y Y Date Thu 05/23/24 Fri 05/24/24 Sat 05/25/24 Sun 05/26/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 69 83 66 78 64 75 63 77 Temp 71 70 83 76 70 67 78 74 66 65 74 72 65 64 76 73 Dewpt 64 65 67 66 64 61 61 61 59 59 58 59 60 61 62 61 PWind dir S SW W W SW SE E SE Wind char GN LT LT LT LT LT LT LT Avg clouds SC SC SC B1 B1 SC SC SC B1 B1 B1 SC SC B1 B1 SC PoP 12hr 10 40 40 30 40 40 30 40 Rain shwrs C C S C C C C C C C C C Tstms C C S S S S $$