Point Forecast Matrices
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
215 FOUS51 KLWX 190238 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 1038 PM EDT Sun Aug 18 2024 VAZ054-190800- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 1038 PM EDT Sun Aug 18 2024 Date 08/18/24 Mon 08/19/24 Tue 08/20/24 Wed 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 72 85 66 78 60 Temp 76 74 73 74 79 82 81 75 72 68 66 68 72 76 77 72 68 63 60 62 Dewpt 71 69 68 67 67 66 66 64 62 59 58 56 54 51 51 50 50 49 49 50 RH 85 84 84 79 67 58 60 69 71 73 75 65 53 42 40 46 52 60 67 65 Wind dir SW W W NW NW W NW NW NW NW NW NW NW NW N N N N N NW Wind spd 3 4 5 6 9 10 11 12 12 12 12 12 13 13 12 10 9 9 9 8 Clouds B1 SC SC SC SC B1 B2 B2 B1 SC SC SC SC SC FW FW FW FW FW FW PoP 12hr 30 70 10 5 0 QPF 12hr 0.11 0.04 0.01 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs L L Tstms C C Heat index 84 83 Max heat 85 85 Date 08/21 Thu 08/22/24 Fri 08/23/24 Sat 08/24/24 Sun 08/25/24 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 78 61 82 63 85 65 88 69 91 Temp 75 73 64 64 80 75 66 66 83 78 70 69 86 82 73 71 88 82 Dewpt 48 50 52 52 51 53 56 57 56 57 60 60 60 61 63 63 62 63 PWind dir NW NW NW S S S SW S SW Wind char GN LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW CL FW CL CL CL FW FW FW FW FW FW FW FW FW PoP 12hr 0 0 0 0 0 0 0 5 5 $$ MDZ013-190800- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 1038 PM EDT Sun Aug 18 2024 Date 08/18/24 Mon 08/19/24 Tue 08/20/24 Wed EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 68 84 63 76 57 Temp 73 71 69 71 79 82 80 73 68 66 64 63 70 74 76 70 63 59 57 59 Dewpt 72 71 69 69 69 69 70 67 64 60 58 57 56 54 54 52 51 51 50 52 RH 97100100 93 72 65 72 81 87 81 81 81 61 50 46 53 65 75 77 78 Wind dir W W W W NW W W NW NW NW NW NW NW NW N N N N N NW Wind spd 2 2 3 4 5 8 10 9 9 9 10 10 11 11 11 6 5 5 5 6 Clouds B1 B1 B1 SC SC B1 B1 B2 B2 B1 SC SC SC SC FW SC FW CL FW FW PoP 12hr 30 60 20 5 0 QPF 12hr 0.29 0.04 0.01 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S L L S S Tstms S C C S Heat index 85 83 Max heat 85 85 Flood A Date 08/21 Thu 08/22/24 Fri 08/23/24 Sat 08/24/24 Sun 08/25/24 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 77 58 81 60 84 63 87 66 90 Temp 75 71 61 62 79 74 63 64 82 77 66 66 85 79 70 70 88 81 Dewpt 51 53 54 55 53 56 57 59 58 61 60 62 62 63 63 64 65 66 PWind dir NW N N SW S S SW SW SW Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW CL FW CL CL CL FW FW FW FW FW FW FW FW SC PoP 12hr 0 0 0 0 0 0 0 5 5 $$ MDZ011-190800- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 1038 PM EDT Sun Aug 18 2024 Date 08/18/24 Mon 08/19/24 Tue 08/20/24 Wed 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 72 86 66 78 61 Temp 76 74 74 74 82 84 82 75 73 68 66 68 73 76 78 72 68 63 61 62 Dewpt 71 70 68 68 67 67 67 65 63 60 57 54 53 51 51 49 49 50 49 50 RH 85 87 82 82 61 57 61 71 71 76 73 61 49 42 39 44 51 62 65 65 Wind dir W W W NW NW W W NW NW NW NW NW NW N N N N N N NW Wind spd 2 2 3 4 5 8 10 9 10 9 10 10 11 11 11 6 5 5 5 6 Clouds B1 B1 B1 SC SC B1 B1 B2 B2 B1 SC SC SC SC FW FW FW FW FW CL PoP 12hr 30 60 20 5 0 QPF 12hr 0.27 0.05 0.01 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S L L S S Tstms S C C S Heat index 85 87 85 Max heat 87 87 Flood A Date 08/21 Thu 08/22/24 Fri 08/23/24 Sat 08/24/24 Sun 08/25/24 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 80 62 83 66 86 68 88 71 91 Temp 77 74 66 64 80 76 68 66 83 79 71 69 86 82 74 72 88 83 Dewpt 49 50 52 51 50 53 56 56 56 58 60 60 60 62 63 62 63 63 PWind dir NW N N SW S S S SW SW Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW FW FW CL FW FW CL CL CL FW FW FW FW FW FW FW FW FW PoP 12hr 0 0 0 0 0 0 0 5 5 $$ WVZ052-190800- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 1038 PM EDT Sun Aug 18 2024 Date 08/18/24 Mon 08/19/24 Tue 08/20/24 Wed EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 64 79 58 74 50 Temp 69 67 65 68 74 77 74 70 64 61 58 60 67 72 73 68 59 55 51 56 Dewpt 66 66 64 65 64 64 63 60 58 57 54 53 51 49 48 47 47 47 47 49 RH 90 97 97 90 71 64 69 71 81 87 86 78 56 44 41 47 64 74 86 77 Wind dir W W W W NW NW NW NW NW NW NW NW NW N N N N N NW NW Wind spd 1 2 2 4 9 10 12 10 10 9 10 10 11 11 11 5 5 4 4 4 Clouds SC SC SC SC B1 B1 B2 B1 B1 B1 SC FW FW FW FW FW SC FW FW FW PoP 12hr 10 60 10 5 0 QPF 12hr 0 0.01 0.01 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S L L Tstms S C C Date 08/21 Thu 08/22/24 Fri 08/23/24 Sat 08/24/24 Sun 08/25/24 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 75 50 79 53 83 56 85 59 88 Temp 72 68 55 56 76 71 56 59 80 75 60 62 83 78 63 64 85 79 Dewpt 47 48 50 51 50 52 53 54 56 57 58 58 58 60 60 60 61 63 PWind dir NW NW NE S S S W SW W Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW FW CL CL CL CL FW FW FW FW FW FW FW FW FW PoP 12hr 0 0 0 0 0 0 0 5 5 $$ VAZ506-190800- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 1038 PM EDT Sun Aug 18 2024 Date 08/18/24 Mon 08/19/24 Tue 08/20/24 Wed 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 67 83 63 77 55 Temp 72 70 69 70 79 81 79 73 68 66 64 63 70 74 76 70 63 58 55 57 Dewpt 71 69 67 68 69 69 68 65 63 60 58 57 55 54 53 52 51 51 50 52 RH 97 97 93 93 72 67 69 76 84 81 81 81 59 50 45 53 65 77 83 83 Wind dir SW W NW NW NW NW NW NW NW NW NW NW NW NW N N N N NW NW Wind spd 2 2 3 4 8 9 10 10 11 10 10 10 11 10 9 5 5 4 4 5 Clouds B1 SC SC SC SC B1 B2 B2 B1 SC SC SC SC SC FW FW FW FW FW CL PoP 12hr 20 70 10 5 0 QPF 12hr 0.08 0.04 0.01 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs L L Tstms C C Heat index 84 Max heat 84 83 Date 08/21 Thu 08/22/24 Fri 08/23/24 Sat 08/24/24 Sun 08/25/24 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 77 55 81 57 85 60 88 64 91 Temp 75 71 58 59 79 74 60 61 82 77 64 64 86 80 68 68 89 81 Dewpt 51 53 53 53 54 56 56 57 59 61 60 61 62 62 62 63 64 65 PWind dir N NW N S S S SW S W Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW CL FW CL CL CL FW FW FW FW FW FW FW FW FW PoP 12hr 0 0 0 0 0 0 0 5 5 $$ VAZ037-190800- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 1038 PM EDT Sun Aug 18 2024 Date 08/18/24 Mon 08/19/24 Tue 08/20/24 Wed EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 66 82 60 79 53 Temp 73 70 67 69 77 79 76 72 68 63 61 62 71 77 78 71 63 58 54 56 Dewpt 68 67 66 66 66 65 65 62 60 59 57 57 54 51 51 50 51 50 49 50 RH 84 90 97 90 69 62 69 71 76 87 87 84 55 40 39 47 65 75 83 80 Wind dir N W W W NW NW NW NW NW NW NW NW N N N N N N N NW Wind spd 2 2 2 2 4 5 6 6 5 5 6 6 8 8 8 5 4 3 3 4 Clouds SC SC SC SC B1 B1 B1 SC SC SC FW FW FW FW FW FW SC FW FW CL PoP 12hr 10 60 5 0 0 QPF 12hr 0.01 0.14 0.01 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C L L Tstms C L C Date 08/21 Thu 08/22/24 Fri 08/23/24 Sat 08/24/24 Sun 08/25/24 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 77 53 81 57 83 58 86 62 90 Temp 75 69 57 57 79 72 60 60 81 74 63 63 85 77 66 65 87 79 Dewpt 48 50 51 52 52 54 56 56 57 59 59 59 59 62 62 62 61 64 PWind dir N N SE S S SW S SW SW Wind char LT LT LT LT LT LT LT LT LT Avg clouds CL FW FW FW CL FW CL CL CL FW FW FW FW FW FW FW FW FW PoP 12hr 0 0 0 0 0 0 0 0 5 $$ MDZ003-190800- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 1038 PM EDT Sun Aug 18 2024 Date 08/18/24 Mon 08/19/24 Tue 08/20/24 Wed 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 65 81 59 74 51 Temp 70 68 66 69 75 77 76 70 65 62 59 61 67 72 74 67 60 55 51 55 Dewpt 69 67 65 67 68 68 65 62 60 57 56 55 54 53 51 49 49 49 48 50 RH 97 97 97 93 79 74 69 76 84 84 90 81 63 51 44 52 67 80 89 83 Wind dir SW SW W W NW NW NW NW NW NW NW NW N N N N N N NW NW Wind spd 2 2 2 3 8 10 11 11 10 8 9 10 10 10 10 5 5 4 4 4 Clouds SC SC B1 SC B1 B2 B1 B2 B2 B1 SC FW SC FW FW SC FW FW FW FW PoP 12hr 10 60 10 5 0 QPF 12hr 0.01 0.04 0.01 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S L L Tstms S C C Date 08/21 Thu 08/22/24 Fri 08/23/24 Sat 08/24/24 Sun 08/25/24 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 75 52 79 55 83 58 86 62 89 Temp 73 68 55 57 77 71 57 59 80 75 61 62 84 78 65 65 87 79 Dewpt 51 52 51 52 54 55 54 56 59 60 58 59 62 63 61 62 64 65 PWind dir NW N N SE S S SW S W Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW FW CL CL CL FW FW FW FW FW FW FW FW FW FW PoP 12hr 0 0 0 0 0 0 0 5 5 $$ MDZ017-190800- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 1038 PM EDT Sun Aug 18 2024 Date 08/18/24 Mon 08/19/24 Tue 08/20/24 Wed EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 70 86 66 79 61 Temp 74 73 72 74 80 84 81 75 71 68 66 68 73 77 78 73 67 64 61 64 Dewpt 71 71 70 70 70 69 70 68 66 63 61 59 59 58 56 55 54 53 53 54 RH 90 93 93 87 72 61 69 79 84 84 84 73 62 52 47 53 63 67 75 70 Wind dir SW W W NW NW W W NW NW NW NW NW NW N N N N N N N Wind spd 5 4 4 5 5 6 9 8 11 10 12 11 13 12 11 8 8 9 8 10 Wind gust 20 Clouds B2 SC SC SC FW B1 B2 B2 B1 B1 SC SC SC SC FW FW FW FW FW CL PoP 12hr 40 60 20 5 0 QPF 12hr 0.08 0.15 0.03 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C L L S S Tstms C C C S S Heat index 83 88 85 Max heat 88 87 Date 08/21 Thu 08/22/24 Fri 08/23/24 Sat 08/24/24 Sun 08/25/24 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 78 62 81 64 83 66 85 68 89 Temp 76 73 64 66 79 74 66 68 81 76 69 70 83 78 71 72 86 79 Dewpt 53 54 55 57 55 56 59 60 59 60 62 63 62 63 64 64 66 66 PWind dir N N NE S S S S SW S Wind char GN LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW CL FW CL FW FW FW FW FW FW FW FW FW FW FW PoP 12hr 0 0 0 0 0 0 0 0 5 $$ WVZ502-190800- Petersburg WV 38.99N 79.15W Elev. 963 ft 1038 PM EDT Sun Aug 18 2024 Date 08/18/24 Mon 08/19/24 Tue 08/20/24 Wed 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 79 55 77 47 Temp 69 65 63 66 74 77 76 70 63 58 55 57 68 75 77 68 58 52 48 51 Dewpt 64 63 62 63 64 62 60 59 58 55 53 53 51 48 47 47 48 47 46 47 RH 84 93 97 90 71 60 58 68 84 90 93 86 54 38 35 47 69 83 93 86 Wind dir SW SW SW W NW NW NW NW NW NW NW NW NW NW NW NW NW NW NW NW Wind spd 2 2 2 2 5 8 10 9 6 4 4 5 6 9 9 5 2 2 1 2 Clouds SC SC SC B1 B2 B1 B1 B1 SC SC SC SC FW FW FW FW FW FW FW CL PoP 12hr 20 60 10 5 0 QPF 12hr 0 0.03 0.01 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S L L L L Tstms S S S C C Date 08/21 Thu 08/22/24 Fri 08/23/24 Sat 08/24/24 Sun 08/25/24 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 78 48 83 52 86 55 88 59 92 Temp 75 68 52 53 80 72 56 57 85 77 60 59 88 79 63 62 90 79 Dewpt 46 47 47 48 49 52 52 53 54 57 55 55 56 60 58 57 59 63 PWind dir N W E S S SW NW SW W Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW FW FW CL CL CL CL CL CL FW FW FW FW FW FW FW FW FW PoP 12hr 0 0 0 0 0 0 5 5 10 $$ MDZ014-190800- Annapolis MD 38.99N 76.49W Elev. 7 ft 1038 PM EDT Sun Aug 18 2024 Date 08/18/24 Mon 08/19/24 Tue 08/20/24 Wed EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 70 82 65 75 60 Temp 73 73 72 73 78 80 79 75 71 68 67 66 70 73 75 72 66 62 61 62 Dewpt 73 71 70 69 69 69 68 67 66 62 60 58 56 55 53 53 54 53 52 53 RH 100 93 93 87 74 69 69 76 84 81 78 75 61 53 46 51 65 72 72 72 Wind dir W W W NW NW W W NW NW NW NW NW NW N N N N N N NW Wind spd 2 2 3 5 6 9 10 10 10 10 11 11 13 13 12 10 10 9 8 9 Wind gust 20 Clouds B1 B1 B1 SC SC B1 B1 B2 B2 B1 SC SC FW SC FW FW FW FW FW CL PoP 12hr 30 60 20 5 0 QPF 12hr 0.35 0.06 0.01 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S L L S S Tstms S C C S Heat index 83 Max heat 83 83 Flood A Date 08/21 Thu 08/22/24 Fri 08/23/24 Sat 08/24/24 Sun 08/25/24 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 75 62 78 64 81 65 83 69 85 Temp 73 72 65 65 76 74 66 67 79 77 69 69 82 78 72 71 83 80 Dewpt 52 54 56 56 54 56 59 59 59 61 62 62 63 64 65 64 66 66 PWind dir NW N NE SW S S S SW SW Wind char GN LT LT LT LT LT LT LT LT Avg clouds FW FW FW CL CL CL CL CL CL FW FW FW FW FW FW FW FW FW PoP 12hr 0 0 0 0 0 0 0 5 5 $$