Point Forecast Matrices
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
868 FOUS51 KLWX 171740 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 139 PM EDT Thu Jul 17 2025 VAZ054-172000- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 139 PM EDT Thu Jul 17 2025 Date Thu 07/17/25 Fri 07/18/25 Sat 07/19/25 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 95 77 87 74 86 Temp 94 94 86 82 81 78 79 82 85 84 81 78 76 75 77 81 83 81 78 Dewpt 73 72 74 73 73 71 70 68 68 70 70 70 71 71 71 72 73 74 73 RH 51 49 68 74 77 79 74 63 57 63 69 76 85 87 82 74 72 79 85 Wind dir SW SW SW SW W N N N SW SE E S E SE E SE S SW S Wind spd 13 13 10 9 8 6 6 5 6 5 5 4 4 4 5 5 6 8 6 Clouds SC SC B1 B1 SC SC SC SC B2 B2 B2 B1 B1 B2 B2 B2 B2 B2 B2 PoP 12hr 20 10 30 40 80 QPF 12hr 0 0 0.13 0.09 0.37 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C C C C C C D D C Tstms S C C S S S S C C S Heat index 103102 94 87 86 85 88 88 85 85 89 86 Max heat 103 105 93 84 88 89 83 89 89 Date Sun 07/20/25 Mon 07/21/25 Tue 07/22/25 Wed 07/23/25 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 75 90 73 85 69 85 71 88 Temp 76 78 87 82 76 74 83 79 72 72 82 79 73 74 85 81 Dewpt 73 73 73 72 69 65 63 63 63 62 63 64 66 68 69 70 PWind dir SW W NW N NE E S S Wind char LT GN LT LT LT LT LT GN Avg clouds B2 B1 SC B1 B1 SC FW SC SC SC SC SC SC SC SC SC PoP 12hr 30 50 20 20 10 20 20 30 Rain shwrs C S C S S S S S C Tstms S C S S S S $$ MDZ013-172000- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 139 PM EDT Thu Jul 17 2025 Date Thu 07/17/25 Fri 07/18/25 Sat 07/19/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 95 75 86 73 85 Temp 94 94 86 82 79 76 77 81 85 83 80 77 75 73 75 80 83 80 77 Dewpt 74 73 76 74 73 70 69 68 69 70 70 70 70 69 71 72 74 74 75 RH 53 51 72 77 82 82 76 65 59 65 72 79 84 87 87 77 74 82 94 Wind dir W SW W W NW N N N W E SE E E E E SE S S S Wind spd 11 11 6 5 4 4 5 5 5 4 2 2 2 2 2 4 6 5 4 Clouds SC SC B1 B1 SC FW SC B1 SC B1 B1 B1 B1 B2 B2 B2 B2 B2 B2 PoP 12hr 20 5 20 40 80 QPF 12hr 0 0 0.20 0.09 0.39 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S C C C C D D C Tstms S S S S S S S C C C Heat index 105103 96 88 84 89 87 83 84 90 84 Max heat 105 105 94 89 90 90 88 Heat Y Y Date Sun 07/20/25 Mon 07/21/25 Tue 07/22/25 Wed 07/23/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 73 89 70 85 67 85 69 88 Temp 74 76 88 81 74 72 82 78 70 70 82 77 71 72 85 80 Dewpt 74 74 76 75 69 66 64 63 62 62 64 65 68 69 70 71 PWind dir SW W N N NE E S S Wind char LT LT LT LT LT LT LT LT Avg clouds B2 B1 SC B1 SC SC FW SC SC SC FW SC SC SC SC SC PoP 12hr 40 40 20 10 10 20 20 20 Rain shwrs C S S C S S S S S Tstms C C S S S S $$ MDZ011-172000- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 139 PM EDT Thu Jul 17 2025 Date Thu 07/17/25 Fri 07/18/25 Sat 07/19/25 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 96 79 91 78 90 Temp 95 96 90 87 83 81 81 86 88 88 82 82 78 78 80 83 86 84 80 Dewpt 73 71 72 73 71 69 67 66 66 67 67 69 68 68 68 69 72 73 72 RH 49 45 56 63 67 67 63 51 48 50 61 65 71 71 67 63 63 70 77 Wind dir W SW W W NW NW N N NW NE SE E SE E E SE S S S Wind spd 11 11 8 5 3 4 5 5 5 4 2 1 1 2 2 4 6 5 4 Clouds B1 SC SC B1 SC SC FW SC B1 B1 B2 B1 B1 B2 B1 B2 B2 OV B2 PoP 12hr 20 5 20 40 80 QPF 12hr 0 0 0.02 0.10 0.37 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S C C C C D D C Tstms S S S S S S S C C C Heat index 105104 97 94 88 84 83 88 90 91 85 85 83 87 92 90 84 Max heat 105 105 98 88 91 92 86 83 92 93 Heat Y Y Date Sun 07/20/25 Mon 07/21/25 Tue 07/22/25 Wed 07/23/25 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 78 94 75 89 71 89 75 92 Temp 78 81 91 84 78 77 86 80 75 74 85 79 76 78 88 83 Dewpt 73 73 73 71 68 63 61 61 60 60 63 63 66 67 68 68 PWind dir SW W NW N NE E S S Wind char LT LT LT LT LT LT LT LT Avg clouds B2 B1 SC B1 SC SC FW SC SC FW FW SC SC SC SC SC PoP 12hr 40 40 10 10 10 20 20 20 Rain shwrs C S S C S S S S Tstms C S C S S S $$ WVZ052-172000- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 139 PM EDT Thu Jul 17 2025 Date Thu 07/17/25 Fri 07/18/25 Sat 07/19/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 94 71 84 69 83 Temp 94 93 84 78 76 73 75 78 80 80 77 73 71 70 72 77 79 79 76 Dewpt 71 71 71 70 70 69 68 67 68 68 69 70 69 68 68 70 72 72 72 RH 47 49 65 76 82 87 79 69 67 67 76 90 93 93 87 79 79 79 87 Wind dir W W W W NW N N NE SE E S S S SE E SE S S S Wind spd 12 12 9 5 3 3 4 3 3 3 2 1 1 1 2 3 5 5 3 Clouds FW SC B1 B1 SC B1 B1 B1 B1 B2 B1 B1 B1 B2 B2 B2 OV OV B2 PoP 12hr 20 10 40 30 80 QPF 12hr 0 0 0.33 0.05 0.32 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C S S S C C C C D D C Tstms S C S S S S S C C C Heat index 101100 89 83 83 Max heat 101 100 85 83 83 Heat Y Y Date Sun 07/20/25 Mon 07/21/25 Tue 07/22/25 Wed 07/23/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 70 88 66 83 62 84 66 88 Temp 72 75 86 79 70 70 81 76 66 67 80 77 68 71 85 80 Dewpt 71 71 72 70 66 63 62 63 60 59 63 65 66 66 69 69 PWind dir SW W NW N N E SE S Wind char LT LT LT LT LT LT LT LT Avg clouds B2 B1 B1 B1 SC SC FW SC SC SC SC B1 B1 SC SC B1 PoP 12hr 40 40 10 20 20 30 30 30 Rain shwrs C S S C S S C C S C Tstms C S C S S S S $$ VAZ506-172000- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 139 PM EDT Thu Jul 17 2025 Date Thu 07/17/25 Fri 07/18/25 Sat 07/19/25 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 96 73 86 71 86 Temp 95 94 84 79 77 74 76 81 83 82 79 75 73 72 74 81 83 80 77 Dewpt 72 72 76 74 73 71 71 71 72 72 72 72 71 71 72 74 76 76 75 RH 48 49 77 85 87 90 85 72 70 72 79 90 93 97 93 79 80 88 94 Wind dir SW SW SW W NW N N N NW N NE S SE E E S S SW S Wind spd 11 11 8 5 5 4 4 5 4 4 3 2 2 2 2 4 5 5 4 Clouds SC SC B1 B1 SC SC B1 B1 B2 B2 B1 B1 B1 B2 B2 B2 OV OV B2 PoP 12hr 20 5 40 40 80 QPF 12hr 0.09 0 0.26 0.05 0.42 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C C C C C C D D C Tstms S S C C S S S S C C S Heat index 104102 93 85 88 87 86 91 86 Max heat 104 105 89 88 90 91 89 Heat Y Y Date Sun 07/20/25 Mon 07/21/25 Tue 07/22/25 Wed 07/23/25 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 90 68 84 65 85 67 89 Temp 74 76 89 80 73 71 82 77 68 69 83 77 69 71 86 80 Dewpt 74 75 77 75 70 67 66 66 63 63 66 67 67 69 71 71 PWind dir SW W NW N NE E S S Wind char LT LT LT LT LT LT LT LT Avg clouds B2 B1 SC B1 B1 SC SC SC SC SC SC B1 SC SC SC B1 PoP 12hr 30 50 20 20 20 30 20 30 Rain shwrs C S C S S S S C S S C Tstms S C S S S S $$ VAZ037-172000- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 139 PM EDT Thu Jul 17 2025 Date Thu 07/17/25 Fri 07/18/25 Sat 07/19/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 92 73 86 71 85 Temp 92 90 83 79 76 74 76 81 83 81 77 74 72 72 73 79 82 79 77 Dewpt 72 71 72 72 71 70 71 71 73 73 72 72 72 71 72 72 74 74 73 RH 52 54 70 79 85 87 85 72 72 77 85 93100 97 97 79 77 85 87 Wind dir SW SW SW SW SW W N E S SE N W SW SW SE S SW SW SW Wind spd 10 10 6 4 2 1 1 2 3 3 2 1 1 1 1 3 5 5 4 Clouds SC B1 B1 B1 SC SC SC SC B2 B2 B2 B2 B2 B2 B2 B2 OV OV B1 PoP 12hr 30 10 80 40 80 QPF 12hr 0 0 0.59 0.28 0.40 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C S L L C C S S C C D D S Tstms S C S L L C S C L S Heat index 100 96 88 85 89 86 88 Max heat 100 98 85 90 87 88 86 Date Sun 07/20/25 Mon 07/21/25 Tue 07/22/25 Wed 07/23/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 72 90 70 83 66 83 67 87 Temp 73 75 87 81 73 72 80 75 69 69 80 76 69 70 84 78 Dewpt 72 72 73 72 71 68 66 66 65 63 65 67 67 68 69 70 PWind dir SW W N NE NE E S S Wind char LT LT LT LT LT LT LT LT Avg clouds B1 B1 SC B1 B1 B1 SC B1 B1 B1 SC B1 B1 SC SC B1 PoP 12hr 20 40 30 40 30 40 30 30 Rain shwrs S C C S C C C S C C S C Tstms S C C S S S $$ MDZ003-172000- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 139 PM EDT Thu Jul 17 2025 Date Thu 07/17/25 Fri 07/18/25 Sat 07/19/25 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 94 70 84 69 82 Temp 94 93 84 77 74 72 73 79 82 80 79 73 71 70 71 76 79 78 77 Dewpt 73 73 73 72 70 68 68 67 68 68 69 69 68 67 69 70 73 73 72 RH 51 52 70 85 87 87 84 67 63 67 72 87 90 90 93 82 82 85 85 Wind dir W W W W NW N N N N E S SE SE E E SE S S S Wind spd 12 12 8 5 3 3 4 4 3 3 3 2 2 2 2 3 5 5 4 Wind gust 23 Clouds SC SC B1 B2 B1 SC SC B1 B1 B1 SC B1 B1 B2 B2 B2 B2 B2 B2 PoP 12hr 20 5 30 30 80 QPF 12hr 0.02 0 0.01 0.09 0.22 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C S S C C C C D D C Tstms S S S S S S C C C Heat index 103102 90 85 83 Max heat 103 102 85 85 84 Heat Y Y Date Sun 07/20/25 Mon 07/21/25 Tue 07/22/25 Wed 07/23/25 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 70 88 66 83 62 84 66 88 Temp 73 74 86 79 70 69 81 76 66 66 81 77 68 70 85 80 Dewpt 72 72 74 71 67 65 63 63 60 60 64 65 64 66 71 70 PWind dir SW W NW N NE SE SE S Wind char LT LT LT LT LT LT LT LT Avg clouds B2 B1 SC B1 SC SC FW SC SC SC SC B1 B1 B1 SC B1 PoP 12hr 40 40 10 20 10 30 30 30 Rain shwrs C S S C S C C S C Tstms C S C S S S S $$ MDZ017-172000- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 139 PM EDT Thu Jul 17 2025 Date Thu 07/17/25 Fri 07/18/25 Sat 07/19/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 95 78 88 75 87 Temp 95 95 86 82 81 79 82 84 86 87 81 77 76 75 79 82 85 84 80 Dewpt 76 76 76 75 74 73 73 71 71 72 72 72 72 73 75 75 76 76 75 RH 54 54 72 79 79 82 74 65 61 61 74 85 87 94 88 79 75 77 85 Wind dir SW SW SW W W NW N N NE E SW S S SE SE S S S S Wind spd 12 12 9 6 5 5 6 6 6 5 2 3 3 4 5 5 8 8 5 Clouds SC SC B1 SC SC SC SC SC SC B1 OV B1 B1 B1 B1 B1 B2 B2 B2 PoP 12hr 20 10 30 50 70 QPF 12hr 0 0 0.12 0.13 0.59 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C C C C C L L C Tstms S S C C C S S S C C C Heat index 109109 96 89 86 87 89 91 94 85 89 94 93 85 Max heat 109 109 92 87 91 94 94 94 Heat Y Y Date Sun 07/20/25 Mon 07/21/25 Tue 07/22/25 Wed 07/23/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 75 91 74 86 71 85 72 87 Temp 76 80 89 83 76 77 83 79 73 75 82 79 74 77 84 80 Dewpt 74 75 76 76 72 70 66 66 65 67 65 66 68 70 71 71 PWind dir SW W NW N NE E SE S Wind char LT LT LT LT LT LT LT GN Avg clouds B1 SC SC B1 B1 SC SC SC FW FW FW SC SC SC SC SC PoP 12hr 30 30 30 20 10 20 20 20 Rain shwrs C C C S S S S S S Tstms C C C S $$ WVZ502-172000- Petersburg WV 38.99N 79.15W Elev. 963 ft 139 PM EDT Thu Jul 17 2025 Date Thu 07/17/25 Fri 07/18/25 Sat 07/19/25 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 94 68 86 67 86 Temp 93 90 80 74 72 69 71 78 82 81 76 71 69 68 69 78 81 81 76 Dewpt 70 71 71 70 70 69 70 73 73 72 72 71 69 68 69 73 74 74 73 RH 47 54 74 87 93100 97 85 74 74 87100100100100 85 79 79 90 Wind dir W W SE S S S E SE E NE SE S S SW S SW W W SW Wind spd 11 11 5 3 2 2 1 2 3 3 2 2 1 1 2 2 4 4 4 Clouds SC SC B2 B1 B1 B1 B2 B2 B2 B2 B1 B1 B2 B2 B2 B2 OV OV B2 PoP 12hr 30 30 80 40 90 QPF 12hr 0 0 0.60 0.07 0.41 Snow 12hr 00-00 00-00 00-00 Rain shwrs C S S S S C L D C C C C C L L D D C Tstms C S S S C L C C S C L C S Obvis PF Heat index 99 96 83 87 85 86 86 Max heat 99 100 87 88 86 88 Date Sun 07/20/25 Mon 07/21/25 Tue 07/22/25 Wed 07/23/25 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 64 85 61 87 64 90 Temp 70 70 86 77 68 66 80 74 64 64 82 76 67 68 86 78 Dewpt 70 70 73 72 68 66 66 66 63 62 67 68 66 66 70 71 PWind dir W W NW N E SE S S Wind char LT LT LT LT LT LT LT LT Avg clouds B2 B2 B1 B2 B2 B1 SC B1 SC SC B1 B1 B1 SC SC B1 PoP 12hr 50 70 30 30 20 50 30 40 Rain shwrs C C C L C S C S S C C C S S C Tstms S S C S S S S C $$ MDZ014-172000- Annapolis MD 38.99N 76.49W Elev. 7 ft 139 PM EDT Thu Jul 17 2025 Date Thu 07/17/25 Fri 07/18/25 Sat 07/19/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 92 76 85 74 83 Temp 91 91 87 82 81 78 78 81 83 82 80 78 76 76 76 79 81 80 79 Dewpt 75 74 74 75 73 71 70 68 69 69 69 72 71 71 71 72 75 74 74 RH 60 58 65 79 77 79 76 65 63 65 69 82 85 85 85 79 82 82 85 Wind dir SW SW SW W NW N N N E E E SE E E SE SE S SW S Wind spd 11 11 8 6 5 5 6 6 6 5 2 2 2 2 4 5 9 9 5 Clouds SC SC B1 B1 SC SC SC SC B1 B1 B2 B1 B1 B2 B2 B2 B2 B2 B2 PoP 12hr 20 10 20 50 80 QPF 12hr 0 0 0.30 0.16 0.47 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C C C C C D D C Tstms S S C C C S S C C C Heat index 102101 95 89 86 84 87 85 83 87 84 Max heat 102 102 93 84 87 88 87 87 Heat Y Y Date Sun 07/20/25 Mon 07/21/25 Tue 07/22/25 Wed 07/23/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 75 88 73 82 69 82 71 85 Temp 76 78 85 82 77 74 80 78 73 72 79 78 74 74 82 80 Dewpt 74 74 75 74 71 66 65 63 64 63 65 65 68 69 71 71 PWind dir SW W N N NE E S S Wind char LT LT LT LT LT LT LT GN Avg clouds B2 B1 SC B1 SC SC FW SC SC SC FW SC SC SC SC SC PoP 12hr 40 40 20 10 10 20 20 20 Rain shwrs C S S C S S S S S Tstms C C S S S S $$