Point Forecast Matrices
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
536 FOUS51 KLWX 201738 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 137 PM EDT Sat Jul 20 2024 VAZ054-202000- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 137 PM EDT Sat Jul 20 2024 Date Sat 07/20/24 Sun 07/21/24 Mon 07/22/24 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 71 92 75 88 Temp 84 82 77 76 73 72 74 85 91 92 85 79 77 75 78 84 87 87 77 Dewpt 68 65 67 68 68 67 67 67 65 64 66 69 70 70 71 71 70 70 71 RH 59 56 71 76 84 84 79 55 42 40 53 72 79 84 79 65 57 57 82 Wind dir S S S S W S W NW S S S S S SE SE SE SE SE E Wind spd 10 9 6 4 2 2 2 4 4 5 6 5 3 2 3 6 8 9 6 Clouds B2 OV OV B2 SC FW FW FW SC SC B1 B1 B1 B2 B2 B2 B2 B2 OV PoP 12hr 30 20 5 20 60 QPF 12hr 0 0 0 0.02 0.17 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C S S S C C L L L Tstms S S S S C C C Heat index 87 84 88 93 94 87 89 92 92 Max heat 88 86 93 94 87 92 93 Date Tue 07/23/24 Wed 07/24/24 Thu 07/25/24 Fri 07/26/24 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 74 90 77 90 76 89 76 90 Temp 74 75 88 84 79 79 87 83 79 78 87 84 78 78 88 85 Dewpt 71 71 71 71 72 71 72 72 73 72 72 71 71 70 69 69 PWind dir S SW S SW SW SW SW W Wind char LT LT LT LT LT GN LT LT Avg clouds B2 B2 B1 B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 B1 PoP 12hr 70 50 50 60 50 60 40 40 Rain shwrs L S S C C C C L C C C L C S S C Tstms C S C C C S C C C S C C S C $$ MDZ013-202000- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 137 PM EDT Sat Jul 20 2024 Date Sat 07/20/24 Sun 07/21/24 Mon 07/22/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 85 70 91 74 88 Temp 84 82 78 75 72 70 73 84 90 90 85 78 75 74 76 85 88 87 78 Dewpt 67 67 69 69 68 67 69 68 67 67 68 70 71 71 73 72 71 71 72 RH 57 61 74 82 87 90 87 59 47 47 57 76 87 90 90 65 57 59 82 Wind dir S S S S W W W SW SE S S S S S SE SE SE SE SE Wind spd 10 9 5 2 1 1 2 3 4 5 4 3 2 2 2 6 8 9 6 Clouds OV OV OV B2 SC FW FW FW B1 B1 B1 B1 B1 B1 B1 B1 B2 B2 OV PoP 12hr 30 20 5 20 50 QPF 12hr 0 0 0 0 0.11 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C S S S C C C C L Tstms S S S S C C C Heat index 87 85 87 93 93 88 91 94 93 Max heat 87 85 93 94 87 94 94 Date Tue 07/23/24 Wed 07/24/24 Thu 07/25/24 Fri 07/26/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 72 89 73 89 74 88 72 89 Temp 72 74 87 83 75 76 86 84 76 76 87 83 74 74 87 85 Dewpt 72 73 73 73 74 74 74 74 74 74 74 74 72 72 71 71 PWind dir SE SW SW SW SW SW W W Wind char LT LT LT LT LT LT LT LT Avg clouds B2 B2 B1 B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 B1 PoP 12hr 70 50 60 60 50 60 40 40 Rain shwrs L C C C L C C L C C C L C S S C Tstms C C S C L C S C C C S C C S C $$ MDZ011-202000- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 137 PM EDT Sat Jul 20 2024 Date Sat 07/20/24 Sun 07/21/24 Mon 07/22/24 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 72 92 75 89 Temp 84 84 79 77 73 72 74 86 91 91 86 81 76 76 77 85 89 87 79 Dewpt 66 64 67 68 68 66 67 66 64 65 67 69 69 70 71 70 69 69 70 RH 55 51 67 74 84 81 79 51 41 42 53 67 79 82 82 61 52 55 74 Wind dir SE S S S W W W SW SE S S S S S SE SE SE SE SE Wind spd 10 9 5 3 1 1 1 3 4 4 4 2 1 1 2 5 8 8 6 Clouds B2 B2 B2 OV SC FW FW FW B1 B1 SC B1 B2 B2 B1 B1 B2 B2 B2 PoP 12hr 20 20 5 10 50 QPF 12hr 0 0 0 0 0.13 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S C C C C L Tstms S S C C C Heat index 86 85 88 93 93 89 84 90 94 91 Max heat 87 87 93 94 88 94 94 Date Tue 07/23/24 Wed 07/24/24 Thu 07/25/24 Fri 07/26/24 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 73 90 77 90 77 90 76 90 Temp 73 75 88 85 79 79 88 85 79 80 90 83 78 78 90 84 Dewpt 71 71 71 72 72 71 71 72 73 72 71 71 71 69 68 69 PWind dir E S SW SW SW SW W W Wind char LT LT LT LT LT LT LT LT Avg clouds B2 B2 B1 B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 SC PoP 12hr 60 50 60 60 60 60 40 40 Rain shwrs L C C C L C C L L C C L C S S C Tstms C C S C L C S C C C S C C S S $$ WVZ052-202000- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 137 PM EDT Sat Jul 20 2024 Date Sat 07/20/24 Sun 07/21/24 Mon 07/22/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 80 64 90 68 84 Temp 79 78 76 71 67 65 70 82 89 89 84 74 70 68 70 80 84 80 78 Dewpt 66 64 65 65 65 63 65 63 59 58 61 62 63 64 65 67 66 68 68 RH 64 62 69 81 93 93 84 53 37 35 46 66 78 87 84 65 55 67 71 Wind dir S S S S S SW W N N N SE SE N N E SE SE SE E Wind spd 9 8 4 3 1 1 1 4 4 4 3 2 0 0 1 3 4 4 4 Clouds B2 B2 B2 B2 FW FW FW FW FW B1 B1 B1 B1 B1 B2 B1 B2 B2 OV PoP 12hr 40 20 5 20 60 QPF 12hr 0.01 0 0 0 0.33 Snow 12hr 00-00 00-00 00-00 Rain shwrs C S S S S C C L L L Tstms S S S S C C C C Obvis PF Heat index 83 84 82 86 83 Max heat 88 89 87 86 Date Tue 07/23/24 Wed 07/24/24 Thu 07/25/24 Fri 07/26/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 67 86 68 84 68 85 66 86 Temp 68 70 85 79 70 70 82 80 70 71 83 80 68 69 84 82 Dewpt 68 69 68 69 69 69 69 69 69 69 68 68 67 67 65 65 PWind dir SE SW SW SW SW SW W NW Wind char LT LT LT LT LT LT LT LT Avg clouds B2 B2 B1 B2 B2 B2 B2 B2 B2 B2 B1 B2 B1 B1 SC SC PoP 12hr 60 60 50 60 40 60 30 40 Rain shwrs L S C L C C C L C S C L C S C Tstms C S S C C C S C C S S C C S $$ VAZ506-202000- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 137 PM EDT Sat Jul 20 2024 Date Sat 07/20/24 Sun 07/21/24 Mon 07/22/24 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 67 91 72 86 Temp 82 80 76 73 70 68 71 83 89 89 84 78 75 72 75 84 86 82 77 Dewpt 69 68 69 70 68 68 69 69 66 65 68 70 71 70 72 74 73 73 72 RH 65 67 79 90 93100 93 63 47 45 59 76 87 93 90 72 65 74 85 Wind dir S S S S SW SW W NW SW SW S S S SE SE SE SE SE E Wind spd 9 6 5 3 1 1 2 4 4 5 5 3 1 1 2 5 6 6 4 Clouds B2 OV B2 B2 SC SC FW FW SC SC SC B1 B1 B2 B1 B1 B2 B2 B2 PoP 12hr 30 10 5 20 60 QPF 12hr 0.02 0 0 0.01 0.27 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S S C C L L L Tstms S S S C C C C Obvis PF Heat index 85 83 87 92 91 87 91 93 87 Max heat 87 85 92 94 84 93 92 Date Tue 07/23/24 Wed 07/24/24 Thu 07/25/24 Fri 07/26/24 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 70 89 72 88 72 86 71 88 Temp 71 72 87 84 74 74 86 82 74 74 85 82 74 74 87 83 Dewpt 71 72 74 74 73 73 75 73 73 73 74 73 72 72 71 71 PWind dir S SW SW SW SW SW W W Wind char LT LT LT LT LT LT LT LT Avg clouds B2 B2 B1 B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 B1 PoP 12hr 60 60 50 60 50 60 40 40 Rain shwrs L S S L C C C L C S C L C S S C Tstms C S C C C S C C S C C S C $$ VAZ037-202000- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 137 PM EDT Sat Jul 20 2024 Date Sat 07/20/24 Sun 07/21/24 Mon 07/22/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 78 65 89 70 86 Temp 77 77 74 70 66 65 69 81 88 87 81 73 70 70 72 82 85 86 80 Dewpt 69 68 67 67 66 64 66 66 64 65 67 68 69 68 69 69 70 70 69 RH 76 74 79 90100 97 90 60 45 48 63 84 97 93 90 65 61 59 69 Wind dir SE NE NE W N SW SW E SE SE E SW N N NE E SE SE E Wind spd 3 3 2 1 0 1 1 2 3 4 3 2 1 1 1 3 5 5 3 Clouds OV OV B2 SC FW SC SC SC SC SC B1 B1 B2 B2 B2 B2 B2 B2 B1 PoP 12hr 60 20 20 30 60 QPF 12hr 0.04 0 0.20 0.18 0.29 Snow 12hr 00-00 00-00 00-00 Rain shwrs L L S S S C C C C C C L L C Tstms S S S S S C C C C C C C Obvis PF PF PF Heat index 83 89 89 83 85 90 91 83 Max heat 89 90 90 91 Date Tue 07/23/24 Wed 07/24/24 Thu 07/25/24 Fri 07/26/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 68 88 71 87 71 86 69 87 Temp 70 70 85 81 73 73 84 80 73 73 85 80 71 72 86 80 Dewpt 69 70 70 71 70 70 71 71 70 70 70 70 69 69 68 68 PWind dir SW SW SW SW SW SW SW S Wind char LT LT LT LT LT LT LT LT Avg clouds B1 B1 B1 B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 B1 PoP 12hr 50 60 50 60 50 60 40 50 Rain shwrs C S S L C S C L C C C L C S C C Tstms C S C C S S C C S C C S C $$ MDZ003-202000- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 137 PM EDT Sat Jul 20 2024 Date Sat 07/20/24 Sun 07/21/24 Mon 07/22/24 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 82 66 90 69 86 Temp 82 81 77 71 69 66 69 82 89 90 84 75 71 69 73 82 86 82 77 Dewpt 67 66 67 68 67 66 68 67 61 59 62 63 64 65 68 70 70 70 70 RH 61 60 71 90 93100 97 61 39 35 48 66 79 87 84 67 59 67 79 Wind dir S S S S S S SW NW NW N E E E E E SE SE SE E Wind spd 10 10 6 4 2 1 1 4 4 4 3 4 2 2 2 4 6 5 4 Clouds OV B2 B2 B2 FW FW SC FW FW SC B2 B1 B1 B1 B1 B2 B2 B2 OV PoP 12hr 40 20 0 20 60 QPF 12hr 0 0 0 0 0.41 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S S S C C L L L Tstms S S S S C C C C Obvis PF Heat index 85 83 85 89 85 86 91 86 Max heat 85 84 89 90 81 91 90 Date Tue 07/23/24 Wed 07/24/24 Thu 07/25/24 Fri 07/26/24 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 87 70 85 70 86 69 87 Temp 71 70 85 82 72 73 83 80 71 73 84 81 71 72 86 82 Dewpt 70 70 72 71 71 72 73 71 71 72 72 71 69 69 68 68 PWind dir SE SW SW SW SW SW W NW Wind char LT LT LT LT LT LT LT LT Avg clouds B2 B2 B2 B2 B2 B2 B2 B2 B1 B2 B1 B2 B1 B1 SC SC PoP 12hr 60 60 50 70 40 60 30 30 Rain shwrs L C C L C C C L C S C L C S C Tstms C C S C C C S C C S S C C S $$ MDZ017-202000- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 137 PM EDT Sat Jul 20 2024 Date Sat 07/20/24 Sun 07/21/24 Mon 07/22/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 83 72 88 75 88 Temp 82 81 77 75 74 72 76 84 87 88 84 78 77 75 80 86 88 88 84 Dewpt 71 70 70 70 70 68 70 70 70 70 71 72 73 72 73 73 73 73 73 RH 69 69 79 84 87 87 82 63 57 55 65 82 87 90 79 65 61 61 70 Wind dir SE SE SE E NW NW NW E SE SE S S S S SE SE SE SE SE Wind spd 10 8 5 4 2 3 3 4 5 6 6 6 4 3 4 6 9 10 9 Clouds B2 B2 B2 B2 B1 SC FW FW SC FW FW B1 B1 B1 B1 B1 B2 B2 B2 PoP 12hr 40 40 10 20 50 QPF 12hr 0.06 0.13 0 0.01 0.14 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C S S S C C C C L Tstms S S S S C C C L Heat index 86 85 88 92 93 89 84 93 96 96 90 Max heat 88 86 92 94 85 84 96 96 Date Tue 07/23/24 Wed 07/24/24 Thu 07/25/24 Fri 07/26/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 74 88 75 90 75 88 74 87 Temp 75 77 86 84 77 78 87 85 78 79 86 83 77 77 86 85 Dewpt 73 74 75 75 75 74 75 76 75 75 75 75 74 73 73 73 PWind dir SW SW SW SW SW SW SW W Wind char LT LT LT GN GN GN GN LT Avg clouds B2 B2 B1 B1 B2 B2 B1 B1 B1 B2 B2 B1 B2 B2 B1 SC PoP 12hr 70 50 50 60 60 60 50 50 Rain shwrs L C S C C C C L L C C L C C C C Tstms L C S C C C S C C C C C C C S C $$ WVZ502-202000- Petersburg WV 38.99N 79.15W Elev. 963 ft 137 PM EDT Sat Jul 20 2024 Date Sat 07/20/24 Sun 07/21/24 Mon 07/22/24 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 89 65 86 Temp 79 81 75 68 65 61 67 82 88 89 82 71 68 65 70 85 85 83 78 Dewpt 68 66 67 66 64 61 63 63 61 61 65 65 64 64 65 67 68 68 69 RH 69 60 76 93 97100 87 53 40 39 56 81 87 97 84 55 57 61 74 Wind dir S S S S S S N NE NE E S SW N N N SE SE E SE Wind spd 3 3 2 2 1 1 0 2 3 2 2 1 0 0 0 2 2 2 2 Clouds B2 B2 OV SC FW FW SC SC SC B1 B2 B2 B1 B2 B1 B2 B2 B2 B2 PoP 12hr 50 20 20 20 70 QPF 12hr 0.09 0 0.01 0.01 0.34 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S S S S S S S C C L L C Tstms S S S S S S S S C L C C Obvis PF PF PF PF PF Heat index 83 83 88 89 84 88 88 86 Max heat 83 88 89 89 87 Date Tue 07/23/24 Wed 07/24/24 Thu 07/25/24 Fri 07/26/24 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 88 66 86 66 86 64 88 Temp 66 67 87 78 69 70 84 79 69 70 85 80 66 68 86 81 Dewpt 66 67 67 69 68 68 68 69 67 68 68 68 66 67 66 67 PWind dir SW SW SW SW SW SW W W Wind char LT LT LT LT LT LT LT LT Avg clouds B2 B1 B1 B2 B2 B2 B2 B2 B2 B1 B1 B2 B1 B1 B1 SC PoP 12hr 50 80 50 80 50 70 30 40 Rain shwrs C S C D C C C D C C C L C S C C Tstms C S S C C S S C C S S C C S C $$ MDZ014-202000- Annapolis MD 38.99N 76.49W Elev. 7 ft 137 PM EDT Sat Jul 20 2024 Date Sat 07/20/24 Sun 07/21/24 Mon 07/22/24 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 82 72 88 75 86 Temp 82 81 78 75 74 73 76 82 87 88 84 79 76 75 78 82 86 84 78 Dewpt 68 68 69 70 70 68 69 70 69 68 70 73 72 72 73 73 73 73 73 RH 63 65 74 84 87 84 79 67 55 52 63 82 87 90 85 74 65 70 85 Wind dir S S S S W W W E S S S S S S SE SE SE SE SE Wind spd 11 10 6 3 1 1 2 3 5 5 4 4 2 2 3 8 9 10 9 Clouds OV B2 OV B2 SC FW FW FW SC SC B1 B1 B1 B1 B1 B1 B1 B2 B2 PoP 12hr 30 20 5 20 50 QPF 12hr 0 0 0 0 0.09 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C S S S S C C C C L Tstms S S S C C C Heat index 85 84 86 91 92 88 87 93 90 Max heat 85 84 91 92 88 93 93 Date Tue 07/23/24 Wed 07/24/24 Thu 07/25/24 Fri 07/26/24 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 73 86 74 86 75 86 74 86 Temp 73 75 84 82 76 77 83 82 77 77 84 82 76 76 85 84 Dewpt 73 73 74 75 75 73 75 76 75 74 75 75 74 72 72 73 PWind dir S SW SW SW SW SW SW W Wind char LT LT LT LT LT GN LT LT Avg clouds B2 B2 B1 B1 B2 B2 B1 B1 B2 B2 B2 B1 B2 B1 B1 SC PoP 12hr 70 50 60 60 60 60 50 40 Rain shwrs L C C C L C C L L C C L C S S C Tstms C C S C L C S C C C S C C S S C $$