Point Forecast Matrices
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
520 FOUS51 KLWX 251138 PFMLWX Point Forecast Matrices National Weather Service Baltimore MD/Washington DC 738 AM EDT Fri Jul 25 2025 VAZ054-252000- Reagan National Airport-Arlington VA 38.86N 77.03W Elev. 66 ft 738 AM EDT Fri Jul 25 2025 Date Fri 07/25/25 Sat 07/26/25 Sun 07/27/25 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 98 78 93 77 91 Temp 80 91 96 96 89 85 82 80 82 88 91 91 84 81 79 77 79 84 88 88 83 Dewpt 71 72 73 72 73 75 74 74 73 71 70 70 73 75 75 74 75 76 75 75 74 RH 74 54 48 46 59 72 77 82 74 57 50 50 70 82 88 90 88 77 66 66 74 Wind dir SW W W W SW W NE N N NE E E SE SE SE SE S S SW SW W Wind spd 5 6 9 9 8 5 5 5 5 5 5 6 6 6 5 4 5 5 8 9 8 Clouds CL CL FW B1 SC SC SC SC SC SC B1 B1 B1 B1 B1 B2 B1 B1 B2 B2 B2 PoP 12hr 20 10 40 50 70 QPF 12hr 0.08 0 0.06 0.08 0.12 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C C C C C C C L L C Tstms S C C C S S C C C Heat index 83 99106105 97 94 88 84 87 94 97 97 90 87 93 98 98 90 Max heat 83 106 109 95 87 97 98 90 98 99 Date Mon 07/28/25 Tue 07/29/25 Wed 07/30/25 Thu 07/31/25 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 77 93 78 95 77 95 74 86 Temp 79 79 90 86 81 80 92 89 81 80 92 86 78 75 83 79 Dewpt 75 75 73 73 74 74 73 72 72 72 70 70 69 67 65 64 PWind dir NW N SW NW NW W NW N Wind char LT LT LT LT LT LT LT GN Avg clouds B1 SC SC SC FW FW FW SC FW FW FW SC SC B1 B1 B1 PoP 12hr 30 20 10 20 10 20 20 40 Rain shwrs C S S S S S S C Tstms C S S S S S $$ MDZ013-252000- Baltimore/Washington Airport-Anne Arundel MD 39.19N 76.67W Elev. 154 ft 738 AM EDT Fri Jul 25 2025 Date Fri 07/25/25 Sat 07/26/25 Sun 07/27/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 97 77 91 75 89 Temp 78 90 96 95 88 83 79 78 79 86 90 90 82 78 76 75 76 82 86 85 81 Dewpt 72 74 73 73 74 75 75 74 73 71 71 71 75 75 75 74 76 77 78 77 77 RH 82 60 48 49 63 77 88 88 82 61 54 54 79 91 97 97100 85 77 77 88 Wind dir W W W W W W NW N N E E E E SE SE SE S S SW S S Wind spd 3 5 6 6 4 3 2 3 4 4 4 4 4 3 3 2 2 4 5 5 3 Clouds CL FW FW SC SC SC B1 SC SC SC B1 B1 B2 B1 B2 B2 B2 B2 B2 B2 B1 PoP 12hr 20 10 40 60 70 QPF 12hr 0 0 0.09 0.19 0.28 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C C C L L C C L L C Tstms S C C C C S S C L C C Heat index 99106105 97 90 91 96 96 89 90 98 96 88 Max heat 106 107 94 96 98 85 98 98 Heat Y Y Y Date Mon 07/28/25 Tue 07/29/25 Wed 07/30/25 Thu 07/31/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 75 91 76 95 75 94 72 85 Temp 77 77 88 84 78 79 92 87 79 79 92 84 76 74 83 77 Dewpt 76 76 76 76 75 76 76 76 73 72 72 73 70 67 66 65 PWind dir W N SW NW W NW NW N Wind char LT LT LT LT LT LT LT LT Avg clouds B1 SC SC SC FW FW FW SC FW FW FW SC B1 B1 B1 B1 PoP 12hr 40 20 10 20 20 20 30 40 Rain shwrs C S S S S C C S C Tstms C S S S S C S $$ MDZ011-252000- Baltimore Inner Harbor-Baltimore City MD 39.28N 76.61W Elev. 20 ft 738 AM EDT Fri Jul 25 2025 Date Fri 07/25/25 Sat 07/26/25 Sun 07/27/25 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 99 82 96 79 94 Temp 82 94 97 96 93 89 86 83 84 89 92 92 87 83 82 80 79 86 88 90 86 Dewpt 69 72 71 71 73 74 74 72 71 69 70 69 72 73 74 74 74 74 74 74 74 RH 65 49 43 45 52 61 68 70 65 52 49 47 61 72 77 82 85 68 63 60 68 Wind dir W W W W W NW NW N N E E E E SE SE SE S S SW S S Wind spd 3 5 6 6 4 2 2 2 3 4 4 4 4 3 2 2 2 4 5 5 3 Clouds CL FW SC SC B1 SC B1 SC SC B1 B2 B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 20 20 40 60 70 QPF 12hr 0 0 0.04 0.25 0.29 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C C C L L C C L L C Tstms S S C C C C S S C L C C Heat index 85102105104102 98 94 88 89 94 98 97 94 89 88 84 94 97 99 94 Max heat 85 105 106 101 93 98 99 91 86 97 99 Heat Y Y Y Date Mon 07/28/25 Tue 07/29/25 Wed 07/30/25 Thu 07/31/25 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 79 96 80 99 80 99 76 90 Temp 83 79 92 89 84 81 95 92 84 80 94 89 82 76 86 82 Dewpt 75 73 72 73 74 74 73 72 72 70 69 69 68 64 62 62 PWind dir W N SW NW NW NW NW N Wind char LT LT LT LT LT LT LT LT Avg clouds B1 SC SC SC FW FW FW SC FW FW FW SC B1 B1 B1 B1 PoP 12hr 40 20 10 20 20 20 30 40 Rain shwrs C S S S S C C S C Tstms C S S S S C S $$ WVZ052-252000- Martinsburg Airport-Berkeley WV 39.41N 77.98W Elev. 558 ft 738 AM EDT Fri Jul 25 2025 Date Fri 07/25/25 Sat 07/26/25 Sun 07/27/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 96 73 91 73 89 Temp 76 89 94 93 85 80 76 75 77 84 88 86 81 77 75 74 76 82 87 85 81 Dewpt 70 72 71 71 72 72 72 71 71 71 71 71 73 74 74 73 73 74 74 74 74 RH 82 57 47 49 65 77 87 87 82 65 57 61 77 90 97 97 90 77 65 70 79 Wind dir SW W W W NW NW NW N N E E E SE SE S S S W W NW NW Wind spd 2 6 8 8 5 3 2 2 2 2 3 3 2 2 2 2 2 3 5 5 3 Clouds FW FW SC SC SC B1 B1 B1 B1 B1 B2 B2 B2 B2 B2 B2 B1 B2 B2 B2 B1 PoP 12hr 20 10 60 60 70 QPF 12hr 0 0 0.34 0.09 0.11 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S L L L L C C C C L L C Tstms S S C C C S S C C S Heat index 96101100 91 84 89 94 91 86 88 95 93 86 Max heat 102 103 87 94 94 95 95 Heat Y Y Y Date Mon 07/28/25 Tue 07/29/25 Wed 07/30/25 Thu 07/31/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 72 92 73 94 71 93 68 84 Temp 75 77 90 84 75 77 91 86 75 75 90 82 72 71 81 75 Dewpt 74 73 72 73 72 72 72 71 71 70 68 68 66 63 62 62 PWind dir NW N W NW NW NW NW N Wind char LT LT LT LT LT LT LT LT Avg clouds B1 SC SC B1 SC FW SC SC FW FW FW SC SC B1 B1 B1 PoP 12hr 30 30 20 20 10 20 20 40 Rain shwrs C C S S S S S S C Tstms S S S S S S S $$ VAZ506-252000- Washington Dulles Airport-Loudoun VA 38.96N 77.45W Elev. 321 ft 738 AM EDT Fri Jul 25 2025 Date Fri 07/25/25 Sat 07/26/25 Sun 07/27/25 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 97 76 94 75 92 Temp 76 91 96 93 88 82 79 76 78 86 92 89 83 79 77 75 77 84 89 88 82 Dewpt 72 75 73 73 75 75 74 74 74 73 73 73 76 76 75 75 77 79 79 78 78 RH 87 60 48 52 66 79 85 94 88 65 54 59 80 91 94100100 85 73 72 88 Wind dir SW W W SW SW NW N N N NE NE E E SE SE SE S SW W SW W Wind spd 2 5 5 6 5 4 3 3 3 3 3 4 3 2 2 2 2 4 5 5 4 Clouds FW FW SC SC SC SC B1 SC SC B1 B1 B1 B1 B1 B1 B2 B1 B1 B2 B2 B1 PoP 12hr 30 10 50 50 70 QPF 12hr 0.02 0 0.08 0.07 0.12 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C C C C C S S L L C Tstms S S C C C S S C C C Heat index 102106102 98 89 93101 97 91 96105102 91 Max heat 106 107 94 101 101 87 105 105 Heat Y Y Y Date Mon 07/28/25 Tue 07/29/25 Wed 07/30/25 Thu 07/31/25 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 74 93 75 96 74 96 71 86 Temp 77 78 91 86 77 79 94 87 77 78 94 84 75 72 83 77 Dewpt 76 77 77 76 75 76 77 75 74 73 73 73 70 68 68 66 PWind dir NW N SW NW NW NW NW N Wind char LT LT LT LT LT LT LT LT Avg clouds B1 SC SC SC FW FW SC SC FW FW FW SC SC B1 B1 B1 PoP 12hr 30 20 10 20 10 20 20 40 Rain shwrs C S S S S S S C Tstms C S S S S S $$ VAZ037-252000- Charlottesville Airport-Albemarle VA 38.14N 78.45W Elev. 640 ft 738 AM EDT Fri Jul 25 2025 Date Fri 07/25/25 Sat 07/26/25 Sun 07/27/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 95 73 93 73 91 Temp 75 90 95 92 85 80 76 75 77 87 91 90 82 78 76 74 76 85 89 87 82 Dewpt 70 71 70 71 72 73 72 71 73 73 72 72 74 75 75 74 74 75 74 74 74 RH 84 54 45 51 65 79 87 87 87 63 54 56 77 91 97100 94 72 61 65 77 Wind dir SW W S SW W W NW W N E SE E NE NE N N W W W W N Wind spd 2 3 4 4 3 2 1 1 1 2 2 2 2 1 1 0 1 2 4 3 2 Clouds FW CL FW SC SC SC SC SC FW FW B1 B1 B1 B1 B1 B1 SC SC B2 B2 B1 PoP 12hr 20 10 50 40 60 QPF 12hr 0 0 0.06 0.07 0.07 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C S S L L C Tstms C C C C C C Heat index 96102 99 91 84 94 99 97 88 94 98 95 88 Max heat 102 99 87 99 99 84 98 98 Date Mon 07/28/25 Tue 07/29/25 Wed 07/30/25 Thu 07/31/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 74 92 73 95 72 94 71 87 Temp 77 77 90 84 76 77 92 84 76 76 91 83 74 73 83 77 Dewpt 74 74 73 73 73 73 72 72 72 72 70 71 70 68 66 66 PWind dir NW N NW NW NW W N NE Wind char LT LT LT LT LT LT LT LT Avg clouds B1 SC FW B1 SC FW FW SC FW FW FW SC SC B1 SC B1 PoP 12hr 30 30 20 20 10 20 20 50 Rain shwrs C C S S S S S S C Tstms C C S S S S C $$ MDZ003-252000- Hagerstown Airport-Washington MD 39.71N 77.73W Elev. 705 ft 738 AM EDT Fri Jul 25 2025 Date Fri 07/25/25 Sat 07/26/25 Sun 07/27/25 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 90 73 89 Temp 76 90 95 92 86 79 77 74 76 84 88 87 81 76 75 74 75 81 86 85 81 Dewpt 72 74 71 72 73 73 73 72 72 72 72 72 74 74 74 74 74 76 77 76 76 RH 87 60 46 52 65 82 87 93 87 67 59 61 79 94 97100 97 85 75 75 85 Wind dir S W W W NW NW N N N E SE NE SE SE SE S S SW W W NW Wind spd 3 5 8 8 5 3 2 2 2 2 3 3 2 2 2 2 2 4 5 5 3 Clouds FW FW SC SC SC B1 B1 B1 B1 B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 PoP 12hr 20 10 60 70 70 QPF 12hr 0.04 0 0.14 0.12 0.17 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S L L L L L L C C L L C Tstms S S S C C C C S S S C C S Heat index 99103100 93 90 95 94 86 87 97 94 87 Max heat 103 101 89 95 95 97 97 Heat Y Y Y Date Mon 07/28/25 Tue 07/29/25 Wed 07/30/25 Thu 07/31/25 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 92 73 95 72 94 68 83 Temp 76 77 89 85 76 78 92 86 75 76 90 82 72 70 81 75 Dewpt 74 75 75 75 73 74 75 74 72 72 72 70 66 65 64 62 PWind dir NW N W NW NW NW N N Wind char LT LT LT LT LT LT LT LT Avg clouds B1 SC SC SC SC FW FW SC FW SC FW SC SC B1 B1 B1 PoP 12hr 30 20 20 20 10 20 20 40 Rain shwrs C S S S S S S S C Tstms S S S S S S S $$ MDZ017-252000- Patuxent River NAS MD 38.29N 76.41W Elev. 39 ft 738 AM EDT Fri Jul 25 2025 Date Fri 07/25/25 Sat 07/26/25 Sun 07/27/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 96 79 92 77 91 Temp 80 88 94 95 88 83 81 80 82 86 90 90 84 80 78 77 81 84 87 88 83 Dewpt 73 74 74 74 75 76 75 75 76 75 74 74 77 75 75 74 77 77 78 78 78 RH 79 63 53 51 66 80 82 85 82 70 60 60 80 85 91 90 88 80 75 72 85 Wind dir SW W S W SW NW N N N N N NE E SE SE SE S S S S S Wind spd 6 5 5 5 4 3 4 5 5 5 5 5 5 5 5 4 4 4 5 6 5 Clouds CL CL FW FW SC SC SC FW FW SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1 PoP 12hr 5 10 20 30 50 QPF 12hr 0 0 0.01 0.03 0.06 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C C C S S C C C Tstms S S C C S S C C C Heat index 84 97105106 98 91 87 85 89 95 99 99 94 85 88 94100102 93 Max heat 84 105 106 94 89 99 101 89 88 100 102 Heat Y Y Y Date Mon 07/28/25 Tue 07/29/25 Wed 07/30/25 Thu 07/31/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 76 91 77 94 78 94 75 87 Temp 77 81 88 84 78 82 92 87 79 81 92 85 78 78 84 80 Dewpt 75 77 76 76 75 76 77 77 74 75 75 74 73 71 70 69 PWind dir SW N S W SW W NW N Wind char LT LT LT LT LT LT LT GN Avg clouds B1 SC FW FW FW FW FW FW FW FW FW SC SC SC SC B1 PoP 12hr 40 10 10 10 10 10 30 40 Rain shwrs C C S S C Tstms C S S S $$ WVZ502-252000- Petersburg WV 38.99N 79.15W Elev. 963 ft 738 AM EDT Fri Jul 25 2025 Date Fri 07/25/25 Sat 07/26/25 Sun 07/27/25 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 69 93 70 92 Temp 73 87 92 92 83 75 72 70 72 84 89 88 81 75 73 71 73 84 88 87 80 Dewpt 71 73 71 71 72 72 71 69 71 73 73 73 74 73 72 71 72 75 75 75 74 RH 93 63 51 51 70 90 97 97 97 70 59 61 79 94 97100 97 74 66 68 82 Wind dir S W W W W SW SW S S NW NW W S SW SW SW W W W W W Wind spd 2 4 6 5 3 2 2 1 1 2 3 2 2 2 2 2 2 2 5 5 3 Clouds FW FW B1 B1 SC B1 SC B1 B1 B1 B2 B2 B1 B1 B1 B1 B2 B1 B2 B2 B1 PoP 12hr 30 20 70 50 70 QPF 12hr 0 0 0.17 0.04 0.12 Snow 12hr 00-00 00-00 00-00 Rain shwrs C S S C C L L C C C C C C L L C Tstms C S S S C C C S S C C S Obvis PF PF Heat index 94 99 99 88 90 97 96 86 92 98 96 84 Max heat 99 101 97 97 98 98 Heat Y Y Y Date Mon 07/28/25 Tue 07/29/25 Wed 07/30/25 Thu 07/31/25 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 94 70 95 68 95 66 85 Temp 72 73 91 82 72 73 92 83 71 72 91 80 71 68 81 73 Dewpt 72 73 73 73 71 71 73 73 70 70 70 70 68 65 65 64 PWind dir W NW W NW W NW N N Wind char LT LT LT LT LT LT LT LT Avg clouds B1 B1 SC B1 SC SC SC B1 FW FW SC SC SC B1 B1 B1 PoP 12hr 30 50 20 30 10 20 20 50 Rain shwrs C S C S S C S S S C C Tstms S C S C S S C $$ MDZ014-252000- Annapolis MD 38.99N 76.49W Elev. 7 ft 738 AM EDT Fri Jul 25 2025 Date Fri 07/25/25 Sat 07/26/25 Sun 07/27/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 94 78 89 76 86 Temp 79 88 92 93 87 83 81 80 81 85 88 88 84 79 78 77 79 82 85 84 81 Dewpt 72 73 74 74 75 76 75 74 74 72 73 72 74 75 75 74 75 76 76 76 76 RH 79 61 56 54 68 80 82 82 79 65 61 59 72 88 91 90 88 82 75 77 85 Wind dir W W SW SW SW W N N N NE E E E SE SE SE S S S S S Wind spd 5 5 8 8 4 2 2 4 5 5 6 5 5 5 4 3 3 5 8 6 5 Clouds CL FW FW SC SC SC SC B1 SC SC B1 B1 B1 B1 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 20 10 30 50 60 QPF 12hr 0.02 0 0.02 0.12 0.30 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C C C C C C C L L C Tstms S C C C C S S S C C C Heat index 96102103 96 91 87 84 86 91 96 95 91 89 94 93 87 Max heat 102 103 94 87 96 95 88 94 94 Heat Y Y Y Date Mon 07/28/25 Tue 07/29/25 Wed 07/30/25 Thu 07/31/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 77 88 77 91 77 91 74 83 Temp 79 79 86 84 79 80 90 86 80 80 89 84 78 76 82 79 Dewpt 76 76 76 75 75 76 76 76 74 72 73 72 70 68 66 65 PWind dir W NE SW W W W NW N Wind char LT LT LT LT LT LT LT LT Avg clouds B1 SC SC SC FW FW FW SC SC FW FW SC B1 B1 B1 B1 PoP 12hr 40 20 10 20 20 20 30 40 Rain shwrs C S S S S C C S C Tstms C S S S S C S $$