Point Forecast Matrices
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
422 FOUS51 KLWX 281504 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 1104 AM EDT Tue Jul 28 2026 VAZ054-282000- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 1104 AM EDT Tue Jul 28 2026 Date Tue 07/28/26 Wed 07/29/26 Thu 07/30/26 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 86 70 85 70 85 Temp 86 84 79 75 72 70 72 79 84 85 80 75 72 70 72 79 84 85 80 Dewpt 71 71 71 72 69 67 67 65 65 64 63 65 64 63 63 63 63 63 62 RH 61 65 77 90 90 90 84 62 53 50 56 71 76 78 73 58 49 48 54 Wind dir S SW SW W NW NW NW NW NW NW NW NW NW NW NW NW NW NW NW Wind spd 14 12 11 9 10 12 12 16 17 18 16 13 13 14 13 16 16 16 12 Wind gust 28 Clouds B2 OV B1 SC CL CL CL FW SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 90 30 10 10 20 QPF 12hr 0.79 0.02 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S D C S S Tstms S D C S Heat index 91 89 86 86 81 85 86 81 Max heat 91 92 86 86 85 86 Date Fri 07/31/26 Sat 08/01/26 Sun 08/02/26 Mon 08/03/26 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 71 89 72 89 73 88 Temp 71 72 85 83 73 73 86 83 74 75 86 83 74 75 86 83 Dewpt 64 64 62 62 65 66 64 64 69 70 69 68 71 72 70 68 PWind dir NW NW S SE S SE SE SE Wind char GN GN LT LT GN GN GN LT Avg clouds SC FW FW FW FW SC B1 B1 B1 B2 B2 B1 B2 B2 B1 B1 PoP 12hr 5 5 0 10 30 50 60 30 Rain shwrs C S C L S S C Tstms S C S C $$ MDZ013-282000- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 1104 AM EDT Tue Jul 28 2026 Date Tue 07/28/26 Wed 07/29/26 Thu 07/30/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 85 67 85 67 85 Temp 85 82 78 73 70 67 71 79 84 84 78 72 68 67 69 77 83 85 80 Dewpt 72 72 73 72 70 67 68 68 68 67 67 66 65 64 65 66 66 66 66 RH 65 72 85 97100100 90 69 59 57 69 81 90 90 87 69 57 53 62 Wind dir SW S S W NW NW NW NW W NW NW NW NW NW NW NW NW NW NW Wind spd 11 9 5 3 5 6 8 11 12 12 10 9 8 9 10 12 12 11 6 Wind gust 23 Clouds B2 OV B1 FW CL FW FW FW B1 SC SC SC B1 SC SC SC SC SC SC PoP 12hr 100 40 20 10 20 QPF 12hr 0.54 0.13 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S D C S S S Tstms S D C S S Heat index 91 87 87 87 85 87 82 Max heat 91 92 87 88 85 87 Flood A A A A Date Fri 07/31/26 Sat 08/01/26 Sun 08/02/26 Mon 08/03/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 67 87 68 88 70 87 71 88 Temp 69 70 85 82 72 72 86 82 73 73 86 81 73 73 86 82 Dewpt 65 66 65 66 66 68 68 69 70 71 72 72 72 72 73 71 PWind dir NW N S SE S SE SE E Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW FW SC SC SC SC B1 B1 B2 B2 B1 B2 B2 B1 B1 PoP 12hr 5 5 5 5 30 40 50 30 Rain shwrs C S C C C S C Tstms S C S C $$ MDZ011-282000- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 1104 AM EDT Tue Jul 28 2026 Date Tue 07/28/26 Wed 07/29/26 Thu 07/30/26 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 69 85 70 86 Temp 85 83 80 74 71 69 72 79 84 84 80 76 72 70 74 78 84 86 81 Dewpt 71 71 71 70 68 66 66 65 64 64 64 64 64 63 62 63 63 62 62 RH 63 67 74 87 90 90 81 62 51 51 58 66 76 78 66 60 49 45 53 Wind dir S SE SW W NW NW NW NW W NW NW NW NW NW NW NW NW NW NW Wind spd 11 8 4 3 4 6 8 11 12 13 10 8 8 9 10 12 12 12 8 Wind gust 18 19 Clouds B2 OV B2 FW CL FW FW FW B1 SC SC SC SC SC SC SC SC SC SC PoP 12hr 100 40 10 10 20 QPF 12hr 0.84 0.10 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C D C S S Tstms C D C S Heat index 90 88 83 85 85 82 85 86 82 Max heat 90 90 85 86 85 87 Flood A A A A Date Fri 07/31/26 Sat 08/01/26 Sun 08/02/26 Mon 08/03/26 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 88 70 88 72 87 72 88 Temp 70 71 86 83 71 72 86 82 73 74 85 81 74 73 86 82 Dewpt 63 62 61 62 65 65 63 65 68 69 68 69 71 70 70 68 PWind dir NW N NW SE S SE SE SE Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW FW SC SC SC SC B1 B1 B2 B2 B1 B2 B2 B1 B1 PoP 12hr 5 5 5 5 30 40 50 30 Rain shwrs C S C C C S C Tstms S C S C $$ WVZ052-282000- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 1104 AM EDT Tue Jul 28 2026 Date Tue 07/28/26 Wed 07/29/26 Thu 07/30/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 84 65 81 64 82 Temp 82 84 77 70 68 65 69 77 81 80 74 66 65 65 65 74 81 81 75 Dewpt 70 71 70 67 66 64 64 63 63 63 62 62 62 61 61 61 62 61 61 RH 67 65 79 90 93 97 84 62 54 56 66 87 90 87 87 64 53 51 62 Wind dir W W NW NW NW NW NW NW NW NW NW NW NW NW NW NW NW NW NW Wind spd 10 9 8 6 8 9 11 14 14 16 12 10 10 11 12 13 13 13 10 Wind gust 19 26 27 23 20 21 23 24 25 24 Clouds B2 B2 FW FW CL FW CL SC SC SC B1 B1 SC SC SC SC SC SC FW PoP 12hr 90 10 10 10 10 QPF 12hr 0.31 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs D C Tstms L C Heat index 86 89 82 81 82 82 Max heat 86 90 82 82 82 83 Date Fri 07/31/26 Sat 08/01/26 Sun 08/02/26 Mon 08/03/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 63 85 63 86 67 86 66 86 Temp 65 68 83 80 68 69 85 80 71 71 84 80 70 70 84 80 Dewpt 62 62 61 61 63 64 63 63 65 68 67 67 68 69 69 67 PWind dir NW NW NW SE SE S SE NW Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW FW SC B1 B2 B1 B2 B2 B2 B2 B1 SC B1 PoP 12hr 5 5 0 10 30 50 50 20 Rain shwrs C S S C C C S S Tstms S C S S $$ VAZ506-282000- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 1104 AM EDT Tue Jul 28 2026 Date Tue 07/28/26 Wed 07/29/26 Thu 07/30/26 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 67 84 66 84 Temp 84 84 78 72 70 67 71 78 83 83 77 70 68 66 67 76 82 84 77 Dewpt 73 73 75 72 69 67 67 68 68 68 67 66 65 64 64 66 67 67 66 RH 70 70 91100 97100 87 71 61 61 71 87 90 93 90 71 61 57 69 Wind dir SW NW NW NW NW NW NW NW NW NW NW NW NW NW NW NW NW NW NW Wind spd 10 8 5 5 8 9 11 13 13 14 12 11 10 11 12 13 13 13 9 Wind gust 25 26 21 24 24 24 Clouds B1 B2 SC CL FW CL CL FW B1 SC SC SC SC SC SC SC SC SC SC PoP 12hr 80 20 10 10 10 QPF 12hr 0.38 0.01 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S D S Tstms S D S Heat index 90 90 86 86 85 87 Max heat 90 92 86 87 85 87 Date Fri 07/31/26 Sat 08/01/26 Sun 08/02/26 Mon 08/03/26 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 86 66 88 69 87 69 87 Temp 66 69 84 81 70 70 86 82 72 72 85 81 72 72 85 81 Dewpt 65 65 66 65 66 67 68 67 69 70 72 72 71 72 74 72 PWind dir NW NW SW S S S SE SE Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW FW SC B1 B1 B1 B2 B1 B1 B2 B2 B1 B1 PoP 12hr 5 5 0 10 20 50 60 30 Rain shwrs S S S C L C S C Tstms S C S C $$ VAZ037-282000- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 1104 AM EDT Tue Jul 28 2026 Date Tue 07/28/26 Wed 07/29/26 Thu 07/30/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 89 66 86 65 86 Temp 87 88 79 74 70 66 70 80 85 85 78 71 68 65 68 78 84 85 78 Dewpt 70 71 70 69 67 64 64 61 60 60 59 61 61 60 60 59 58 58 59 RH 57 57 74 84 90 93 81 52 43 43 52 71 78 84 76 52 41 40 52 Wind dir SW W NW NW NW NW NW NW NW NW NW NW NW W NW NW NW N NW Wind spd 11 11 8 5 5 6 6 9 11 12 11 8 8 8 9 10 10 11 9 Wind gust 23 Clouds B1 OV FW CL CL CL CL CL FW FW FW FW FW FW CL FW FW FW FW PoP 12hr 80 10 0 0 5 QPF 12hr 0.19 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs D Tstms L Heat index 92 94 81 85 85 84 Max heat 92 94 85 86 84 85 Date Fri 07/31/26 Sat 08/01/26 Sun 08/02/26 Mon 08/03/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 64 88 66 88 67 85 68 87 Temp 66 68 86 81 70 69 86 81 71 69 83 78 71 70 86 81 Dewpt 61 61 59 61 63 63 62 63 67 67 67 68 70 69 69 69 PWind dir NW N E S S S SE SE Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW FW SC SC B1 B1 B2 B2 B2 B2 B2 B2 B1 B1 B1 PoP 12hr 0 5 5 20 40 60 50 40 Rain shwrs S C C C L C S S C Tstms S C S C $$ MDZ003-282000- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 1104 AM EDT Tue Jul 28 2026 Date Tue 07/28/26 Wed 07/29/26 Thu 07/30/26 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 65 81 64 82 Temp 80 83 78 71 68 65 69 76 81 80 74 67 66 64 66 75 81 81 77 Dewpt 70 71 71 69 66 65 66 66 66 66 65 65 64 62 63 64 65 64 64 RH 72 67 79 93 93100 90 71 60 62 74 93 93 93 90 69 58 56 64 Wind dir W W NW NW NW NW NW NW NW NW NW NW NW NW NW NW NW NW NW Wind spd 10 8 6 5 6 8 11 14 14 14 12 10 10 11 12 13 13 12 8 Wind gust 25 25 23 20 20 21 Clouds OV B2 FW FW FW CL FW B1 B1 SC B1 B1 B1 SC SC SC SC SC FW PoP 12hr 90 10 30 20 20 QPF 12hr 0.30 0 0 0.06 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs D C C S S S S Tstms L C C S Heat index 83 88 83 82 83 83 Max heat 85 88 83 83 83 84 Date Fri 07/31/26 Sat 08/01/26 Sun 08/02/26 Mon 08/03/26 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 85 64 86 67 86 67 86 Temp 65 67 83 79 68 69 84 80 71 70 83 80 70 70 83 80 Dewpt 63 64 63 64 64 65 66 65 66 68 69 69 69 69 70 68 PWind dir NW NW NE S SE SE SE NW Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW FW SC SC SC B1 B1 B1 B2 B2 B2 B2 B1 SC B1 PoP 12hr 5 5 0 10 30 50 50 30 Rain shwrs C C S C C C S C Tstms S C S C $$ MDZ017-282000- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 1104 AM EDT Tue Jul 28 2026 Date Tue 07/28/26 Wed 07/29/26 Thu 07/30/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 85 70 85 70 85 Temp 85 82 77 74 72 70 72 80 84 85 80 75 72 70 74 77 84 84 79 Dewpt 72 73 73 72 72 69 69 67 67 66 66 66 65 65 65 65 65 64 66 RH 65 74 87 93100 97 90 65 57 53 62 74 79 84 74 67 53 51 64 Wind dir S S S SW W NW NW NW W W W NW NW NW NW NW NW NW NW Wind spd 14 13 10 6 6 9 9 11 11 11 8 9 10 10 11 12 11 11 6 Clouds OV OV B2 SC FW CL CL CL FW SC SC FW FW FW FW SC FW SC FW PoP 12hr 90 70 5 10 10 QPF 12hr 0.75 0.14 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C D L Tstms C L C Heat index 91 87 82 87 87 82 86 85 Max heat 92 90 87 87 86 87 Date Fri 07/31/26 Sat 08/01/26 Sun 08/02/26 Mon 08/03/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 70 87 71 84 73 84 73 84 Temp 72 73 85 80 74 74 83 79 75 76 81 79 76 76 82 79 Dewpt 66 66 66 66 68 69 68 68 71 72 72 72 73 73 73 72 PWind dir NW N S S S SE S SE Wind char LT LT LT LT LT GN LT LT Avg clouds FW FW FW FW FW FW SC B1 B1 B1 B1 B1 B1 B2 B1 B1 PoP 12hr 10 5 0 10 10 40 40 30 Rain shwrs S C C C S C Tstms S S S $$ WVZ502-282000- Petersburg WV 38.99N 79.15W Elev. 963 ft 1104 AM EDT Tue Jul 28 2026 Date Tue 07/28/26 Wed 07/29/26 Thu 07/30/26 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 62 81 59 81 Temp 85 84 77 70 65 62 65 73 80 79 71 65 61 59 61 73 81 79 73 Dewpt 72 72 69 67 64 62 63 64 65 65 63 63 61 59 61 63 64 63 63 RH 65 67 76 90 97100 93 73 60 62 76 93100100100 71 56 58 71 Wind dir E NE SE NW NW W W NW NW NW NW NW NW NW NW NW NW NW NW Wind spd 10 10 8 3 3 3 4 11 13 13 10 5 3 3 4 9 11 11 5 Wind gust 20 19 21 16 19 Clouds B1 B2 SC FW FW SC SC SC SC FW SC SC SC B1 B1 FW SC FW SC PoP 12hr 70 20 20 10 10 QPF 12hr 0.16 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C L S S Tstms C C S S Heat index 91 90 82 83 Max heat 91 91 82 83 83 83 Date Fri 07/31/26 Sat 08/01/26 Sun 08/02/26 Mon 08/03/26 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 58 85 60 87 64 86 64 87 Temp 60 62 83 77 64 64 85 79 68 66 83 78 68 66 84 79 Dewpt 60 62 63 65 62 63 65 65 64 66 69 68 66 66 71 69 PWind dir W N W S S S SW W Wind char LT LT LT LT LT LT LT LT Avg clouds FW SC FW SC SC B1 B1 B2 B2 B2 B2 B2 B1 B1 B1 B1 PoP 12hr 5 5 5 20 30 60 50 50 Rain shwrs S C S C L C S C C Tstms S S C S C $$ MDZ014-282000- Annapolis MD 38.99N 76.49W Elev. 7 ft 1104 AM EDT Tue Jul 28 2026 Date Tue 07/28/26 Wed 07/29/26 Thu 07/30/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 83 70 85 70 84 Temp 83 81 76 74 72 70 72 81 84 85 79 75 71 70 72 78 82 84 81 Dewpt 73 72 72 72 71 68 67 66 66 66 66 67 66 65 65 65 65 65 65 RH 72 74 87 93 97 93 84 60 55 53 64 76 84 84 79 64 56 53 58 Wind dir S S S W W NW NW NW W W NW NW NW NW NW NW NW NW NW Wind spd 14 11 8 5 6 8 9 11 12 12 10 9 9 10 10 13 12 12 8 Clouds B2 OV B1 FW CL FW CL FW SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 100 40 10 10 20 QPF 12hr 0.53 0.12 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C D C S S Tstms C D C S Heat index 89 85 83 86 87 84 86 83 Max heat 89 89 86 87 84 86 Flood A A A A Date Fri 07/31/26 Sat 08/01/26 Sun 08/02/26 Mon 08/03/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 70 86 70 86 72 86 72 86 Temp 73 73 85 82 73 73 85 81 74 75 85 81 74 75 85 81 Dewpt 66 65 64 68 68 69 70 70 71 72 74 73 73 73 74 73 PWind dir NW N S SE S S SE E Wind char LT LT LT LT LT GN LT LT Avg clouds SC FW FW FW FW SC SC B1 B1 B1 B1 B1 B1 B2 B1 B1 PoP 12hr 10 5 0 5 20 40 50 30 Rain shwrs S S C C C S C Tstms S C S C $$