Point Forecast Matrices
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
533 FOUS51 KLWX 220238 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 1038 PM EDT Tue May 21 2024 VAZ054-220800- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 1038 PM EDT Tue May 21 2024 Date 05/21/24 Wed 05/22/24 Thu 05/23/24 Fri EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 64 89 71 86 69 Temp 70 66 65 69 79 87 87 82 77 74 72 75 82 84 81 77 73 70 69 71 Dewpt 60 60 60 63 65 66 65 66 67 67 66 67 67 67 67 67 66 65 66 66 RH 71 81 84 81 62 50 48 58 71 79 81 76 61 57 63 71 79 84 90 84 Wind dir S S S S S S S S S SW SW SW W W SW SW W W W NW Wind spd 8 6 5 6 6 9 10 9 6 5 4 4 5 5 8 5 4 4 4 5 Clouds FW FW FW FW FW SC SC SC SC B1 B1 B1 B1 B2 B2 OV OV B1 B1 B1 PoP 12hr 0 20 40 60 50 QPF 12hr 0 0.01 0.12 0.45 0.09 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C L L C C S Tstms S C C C C C C S Heat index 89 89 84 85 87 83 Max heat 89 90 82 87 86 Date 05/24 Sat 05/25/24 Sun 05/26/24 Mon 05/27/24 Tue 05/28/24 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 85 69 85 67 84 67 82 65 79 Temp 83 79 71 72 82 77 70 71 82 76 68 70 79 75 68 69 78 73 Dewpt 65 65 66 67 67 66 65 64 63 63 61 63 64 63 61 61 60 59 PWind dir SW S SW NW NW SE SW SW SW Wind char LT LT LT LT LT LT GN LT GN Avg clouds B1 SC B1 B2 B1 B1 B1 B1 SC B1 B1 B2 B1 B1 B1 B1 B1 B1 PoP 12hr 40 50 60 30 30 50 50 50 40 Rain shwrs S C C C C L C C C C C C C C C C Tstms S C C C S C C C C C C C S $$ MDZ013-220800- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 1038 PM EDT Tue May 21 2024 Date 05/21/24 Wed 05/22/24 Thu 05/23/24 Fri EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 60 88 68 85 66 Temp 67 63 61 66 78 85 86 79 74 71 69 73 81 83 79 76 70 68 67 69 Dewpt 60 59 59 62 66 66 67 67 67 67 66 67 68 67 67 67 67 65 65 65 RH 78 87 93 87 67 53 53 67 79 87 90 81 65 59 67 74 90 90 93 87 Wind dir S S S S S S S S S SW SW SW W W SW SW W W W NW Wind spd 4 3 2 3 5 8 9 5 3 2 2 2 3 5 6 3 2 2 2 2 Clouds FW FW FW SC FW SC SC SC B1 B1 B1 B1 B2 B2 B2 OV OV B1 B1 SC PoP 12hr 0 20 40 60 50 QPF 12hr 0 0.03 0.23 0.40 0.08 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C L L C C S Tstms S C C C C C C S Heat index 87 89 84 86 Max heat 87 89 86 85 Coast Flood Y Y Y Date 05/24 Sat 05/25/24 Sun 05/26/24 Mon 05/27/24 Tue 05/28/24 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 84 66 82 65 83 64 79 62 77 Temp 82 77 68 69 78 75 67 68 81 74 65 67 76 73 66 67 76 72 Dewpt 65 67 65 67 66 66 64 64 63 64 60 63 65 64 61 62 61 61 PWind dir SW S S NW SW SE S SW SW Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC SC B1 B2 B2 B1 B1 B1 SC SC B1 B2 B1 B1 B1 B1 B1 B1 PoP 12hr 40 50 60 30 30 50 50 50 40 Rain shwrs S C C C C L C C C C C C C C C C Tstms S C C C C C C S C C S C S $$ MDZ011-220800- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 1038 PM EDT Tue May 21 2024 Date 05/21/24 Wed 05/22/24 Thu 05/23/24 Fri EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 68 92 74 90 70 Temp 73 69 68 72 83 90 90 82 80 75 75 78 86 88 85 78 75 74 72 73 Dewpt 60 59 59 60 63 65 65 65 67 67 66 67 66 66 65 67 66 65 64 64 RH 64 70 73 66 51 44 44 56 65 76 74 69 51 48 51 69 74 74 76 73 Wind dir S S S S S SE S S S SW SW SW W SW SW SW W W W NW Wind spd 3 2 2 2 5 8 9 5 3 2 2 2 3 5 6 2 2 2 2 2 Clouds FW FW FW SC FW SC SC SC B1 B1 B1 B1 B2 B2 B2 OV OV B1 B1 SC PoP 12hr 0 20 40 60 50 QPF 12hr 0 0.02 0.20 0.44 0.05 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C S S L L C C S Tstms S C C S C C C C S Heat index 84 92 92 84 82 88 90 87 Max heat 92 93 85 90 90 Date 05/24 Sat 05/25/24 Sun 05/26/24 Mon 05/27/24 Tue 05/28/24 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 89 72 87 70 87 69 84 67 82 Temp 87 79 74 75 83 77 72 74 85 76 71 72 81 75 70 72 81 73 Dewpt 63 64 65 65 65 65 63 62 61 63 60 61 63 62 60 59 59 59 PWind dir SW S S NW W SE SW SW SW Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC SC B1 B2 B2 B1 B1 B1 SC SC B1 B2 B1 B1 B1 B1 B1 B1 PoP 12hr 40 50 60 30 30 50 50 50 40 Rain shwrs S C C C C L C C C C C C C C C C Tstms S C C C C C C S C C S C S $$ WVZ052-220800- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 1038 PM EDT Tue May 21 2024 Date 05/21/24 Wed 05/22/24 Thu 05/23/24 Fri EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 59 86 64 81 61 Temp 68 63 61 67 79 84 84 77 70 68 66 69 76 78 76 73 66 64 62 66 Dewpt 59 58 59 62 64 65 64 65 65 64 63 65 65 64 64 64 62 62 61 63 RH 73 84 93 84 60 53 51 67 84 87 90 87 69 62 66 73 87 93 97 90 Wind dir S S S S S S S SW SW W W W W SW W W W W W W Wind spd 5 3 2 2 3 6 6 5 2 2 1 2 3 5 5 2 2 2 2 2 Clouds SC SC FW FW FW SC SC B1 B1 B1 B1 B2 B2 B2 B2 B2 B2 B1 B1 SC PoP 12hr 5 50 50 70 30 QPF 12hr 0 0.04 0.32 0.30 0.03 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C C S S C C L L C C S Tstms S C C C S S S C C C C C Obvis PF PF Heat index 86 85 Max heat 86 86 Date 05/24 Sat 05/25/24 Sun 05/26/24 Mon 05/27/24 Tue 05/28/24 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 82 62 83 61 80 60 77 58 75 Temp 79 76 66 67 79 76 65 66 78 74 63 65 74 72 63 63 73 71 Dewpt 63 64 63 64 64 64 61 62 60 60 59 61 61 60 57 58 57 56 PWind dir SW S W W SW SE SW W W Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC SC B1 B2 B1 SC SC SC SC SC B1 B2 B1 B1 B1 B1 B1 B1 PoP 12hr 50 50 60 30 40 50 60 50 50 Rain shwrs S C C C C L C S C C C C L C C C C Tstms S C C C S C C C C S S C S $$ VAZ506-220800- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 1038 PM EDT Tue May 21 2024 Date 05/21/24 Wed 05/22/24 Thu 05/23/24 Fri EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 62 88 67 83 65 Temp 69 66 64 68 80 87 87 81 75 71 69 72 80 82 79 75 70 68 66 69 Dewpt 62 61 61 63 66 66 67 68 68 67 66 68 68 67 67 67 67 65 65 66 RH 78 84 90 84 62 50 52 65 79 87 90 87 67 61 67 76 90 90 97 90 Wind dir S S S S S S S S S SW W W W W SW SW W W W NW Wind spd 5 4 4 4 4 5 6 5 3 2 2 2 3 5 5 3 2 2 2 2 Clouds SC SC SC FW FW SC SC SC B1 SC B1 B2 B2 B2 B2 B2 B2 B1 B1 B1 PoP 12hr 0 30 40 70 50 QPF 12hr 0 0 0.19 0.45 0.05 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C S S L L C C S Tstms C C C S C C C C Heat index 82 89 90 84 83 85 Max heat 89 90 85 83 Date 05/24 Sat 05/25/24 Sun 05/26/24 Mon 05/27/24 Tue 05/28/24 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 84 66 84 64 83 63 80 61 77 Temp 82 78 69 70 81 77 67 68 81 76 66 67 78 75 67 67 77 73 Dewpt 65 67 66 67 67 67 64 64 63 65 61 65 65 64 61 62 61 60 PWind dir SW S SW NW W S SW SW SW Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC SC B1 B2 B1 SC SC SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 PoP 12hr 40 50 60 30 40 50 60 50 40 Rain shwrs S C C C C L C C C C C L C C C C Tstms S C C C S C C C C C C S S $$ VAZ037-220800- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 1038 PM EDT Tue May 21 2024 Date 05/21/24 Wed 05/22/24 Thu 05/23/24 Fri EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 63 90 69 85 65 Temp 71 67 65 70 82 87 87 81 76 72 70 73 82 83 80 75 72 69 67 69 Dewpt 60 59 59 60 64 63 64 64 65 64 63 65 65 64 65 64 65 63 62 63 RH 68 75 81 71 55 45 46 56 69 76 78 76 56 53 60 69 79 81 84 81 Wind dir S S S S S S S S SW SW SW W SW SW SW W W W W W Wind spd 3 3 2 2 5 6 8 5 4 3 2 2 4 5 5 3 2 2 2 2 Clouds FW SC FW FW FW SC SC SC SC SC SC B1 B1 B2 B2 B2 B2 B1 B1 B1 PoP 12hr 5 30 30 60 40 QPF 12hr 0 0.02 0.06 0.21 0.07 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S S L L C C S Tstms C C S L C C C Heat index 83 88 88 83 84 84 82 Max heat 88 89 82 85 83 Date 05/24 Sat 05/25/24 Sun 05/26/24 Mon 05/27/24 Tue 05/28/24 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 86 66 89 66 87 66 83 63 82 Temp 84 77 69 71 85 79 70 71 85 76 69 70 81 77 68 70 80 74 Dewpt 63 64 63 64 64 64 63 62 62 63 62 63 62 61 59 60 58 57 PWind dir SW SW SW W S S SW SW SW Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC B1 B1 B1 SC SC SC SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 PoP 12hr 50 50 50 30 40 50 60 40 40 Rain shwrs S C C C C C C S C C C C L C S C C Tstms S C C C C C C C S C S C $$ MDZ003-220800- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 1038 PM EDT Tue May 21 2024 Date 05/21/24 Wed 05/22/24 Thu 05/23/24 Fri EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 61 87 65 82 63 Temp 69 66 63 68 79 85 85 78 71 69 67 70 77 80 78 73 68 66 64 67 Dewpt 60 61 60 63 66 66 67 67 66 65 65 66 67 66 65 66 64 63 62 64 RH 73 84 90 84 64 53 55 69 84 87 93 87 71 62 64 79 87 90 93 90 Wind dir S S S S S S S SW S W SW SW W W W W W W W W Wind spd 5 4 3 3 4 6 6 4 3 2 2 2 4 5 5 3 2 2 2 2 Clouds SC SC FW FW FW SC SC B1 B1 B1 B1 B2 B2 B2 B2 B2 B2 B1 B1 B1 PoP 12hr 0 50 50 70 30 QPF 12hr 0 0.12 0.21 0.24 0.02 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C C C S C C C L L C C S Tstms C C C C S C S C C C C C Obvis PF Heat index 87 88 82 Max heat 87 88 82 82 Date 05/24 Sat 05/25/24 Sun 05/26/24 Mon 05/27/24 Tue 05/28/24 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 83 65 83 62 81 62 77 58 76 Temp 81 76 67 68 79 75 65 67 79 74 64 66 74 72 64 65 75 71 Dewpt 64 65 64 65 66 66 62 62 61 63 59 62 63 62 59 59 59 59 PWind dir SW S SW W SW SE SW SW W Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC SC B1 B2 B1 SC SC SC SC SC B1 B2 B1 B1 B1 B1 B1 B1 PoP 12hr 40 50 60 30 30 50 60 50 50 Rain shwrs S C C C C L C C C C C L C C C C Tstms S C C C S C C C C S S C S $$ MDZ017-220800- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 1038 PM EDT Tue May 21 2024 Date 05/21/24 Wed 05/22/24 Thu 05/23/24 Fri EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 61 83 68 83 66 Temp 65 63 62 67 76 80 80 74 71 71 69 72 80 81 79 72 69 68 67 69 Dewpt 60 59 59 62 64 66 64 64 64 64 63 65 67 67 66 66 65 65 64 65 RH 84 87 90 84 66 62 58 71 79 79 81 79 65 63 64 81 87 90 90 87 Wind dir S S S S S S S S S S SW SW SW S SW S SW SW W W Wind spd 6 5 5 5 6 10 10 10 6 5 5 5 5 6 8 5 4 4 4 4 Clouds FW FW SC SC FW FW SC SC SC SC SC SC SC B1 B2 OV OV B2 B1 B1 PoP 12hr 0 5 20 40 50 QPF 12hr 0 0 0.07 0.67 0.34 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C C C S S S Tstms S C C C C S S S Heat index 82 82 82 83 Max heat 82 83 83 83 Date 05/24 Sat 05/25/24 Sun 05/26/24 Mon 05/27/24 Tue 05/28/24 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 81 67 81 66 81 65 81 64 78 Temp 79 73 68 70 79 74 67 69 79 73 66 69 79 73 67 68 77 72 Dewpt 66 65 64 66 67 66 64 64 65 64 61 65 66 64 62 62 62 63 PWind dir SW S SW W NE S S SW SW Wind char LT LT LT LT LT LT GN LT GN Avg clouds B1 SC B1 B1 B1 SC B1 SC SC SC B1 B1 B2 B1 B1 SC B1 B1 PoP 12hr 40 40 50 30 30 50 50 40 40 Rain shwrs S C C C C C C C C C C C C C S C Tstms S C C C S C C S C C S C $$ WVZ502-220800- Petersburg WV 38.99N 79.15W Elev. 963 ft 1038 PM EDT Tue May 21 2024 Date 05/21/24 Wed 05/22/24 Thu 05/23/24 Fri EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 61 89 63 82 60 Temp 68 65 63 68 81 86 85 77 70 66 64 67 75 79 77 72 67 64 62 64 Dewpt 63 61 59 63 64 63 64 66 64 62 62 64 65 65 65 65 63 62 61 63 RH 84 87 87 84 56 46 50 69 81 87 93 90 71 62 67 79 87 93 97 97 Wind dir S S S S W SW SW S W SW SW SW W SW W W W W W W Wind spd 3 3 2 2 2 4 5 3 2 2 2 2 3 4 4 3 2 2 2 2 Clouds SC SC SC FW SC B1 B1 B1 B1 SC B1 B2 B2 B2 B2 B2 B1 SC SC SC PoP 12hr 5 50 40 80 30 QPF 12hr 0 0.02 0.04 0.39 0.02 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C C C S C C C D D C C S Tstms S C C C C S C C L C C C Heat index 83 87 86 Max heat 87 87 Date 05/24 Sat 05/25/24 Sun 05/26/24 Mon 05/27/24 Tue 05/28/24 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 84 62 86 61 84 60 79 58 78 Temp 82 75 66 66 82 77 65 65 82 74 64 65 77 74 64 63 76 71 Dewpt 63 64 63 63 64 63 61 62 60 62 60 62 63 62 59 59 59 58 PWind dir SW SW W W SW S SW SW W Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC B1 B1 B1 SC SC SC SC SC SC B1 B1 B1 B1 B1 B1 B1 SC PoP 12hr 60 50 60 30 50 50 60 50 50 Rain shwrs S L C C C L C S C C C C L C C C C Tstms S C C S S C C C C S S C C $$ MDZ014-220800- Annapolis MD 38.99N 76.49W Elev. 7 ft 1038 PM EDT Tue May 21 2024 Date 05/21/24 Wed 05/22/24 Thu 05/23/24 Fri EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 63 82 69 83 68 Temp 68 65 64 68 74 78 79 75 72 71 71 73 78 80 78 75 71 69 69 70 Dewpt 61 61 61 63 65 66 66 65 66 66 66 67 68 68 68 67 67 66 66 66 RH 78 87 90 84 74 67 64 71 81 84 84 81 71 67 71 76 87 90 90 87 Wind dir S S S S S S S S S S SW SW SW SW SW SW SW SW W NW Wind spd 6 5 5 5 8 10 11 10 5 4 3 2 4 6 8 4 2 2 2 2 Clouds FW FW FW FW FW FW SC SC SC B1 B1 B1 B2 B2 B2 OV OV B1 B2 B1 PoP 12hr 0 10 30 50 50 QPF 12hr 0 0.04 0.20 0.38 0.09 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C C C S Tstms C C C C C C S Heat index 83 Max heat 83 83 Coast Flood Y Y Y Date 05/24 Sat 05/25/24 Sun 05/26/24 Mon 05/27/24 Tue 05/28/24 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 81 67 80 67 80 66 78 64 76 Temp 77 75 69 71 76 74 69 70 77 73 67 69 74 72 67 68 74 72 Dewpt 66 66 66 67 67 66 65 64 65 64 62 63 65 63 62 61 62 61 PWind dir SW S S SW E S S SW SW Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC SC B1 B2 B2 B1 B1 B1 SC SC B1 B1 B2 B1 B1 B1 B1 B1 PoP 12hr 40 40 50 30 30 50 50 50 40 Rain shwrs S C C C C C C C C C C C C C C C Tstms S C C C C C C S C C S C C $$