573
FOUS51 KLWX 151201
PFMLWX
POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
801 AM EDT SAT AUG 15 2026
VAZ054-152000-
REAGAN NATIONAL AIRPORT-ARLINGTON VA
38.86N 77.03W ELEV. 66 FT
801 AM EDT SAT AUG 15 2026
DATE SAT 08/15/26 SUN 08/16/26 MON 08/17/26
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 88 74 86 75 89
TEMP 82 86 86 81 77 76 75 75 79 82 82 78 77 76 75 77 84 88 87 82
DEWPT 69 68 67 66 68 70 71 70 70 72 72 72 73 74 74 74 74 74 72 69
RH 65 55 53 60 74 82 87 84 74 72 72 82 87 94 97 90 72 63 61 65
WIND DIR E E SE SE SE SE S S S S S S SW W W NW NW NW NW NW
WIND SPD 6 5 5 8 8 8 8 10 12 13 13 12 11 11 10 10 12 13 12 10
CLOUDS FW B1 B2 SC SC B2 B2 B2 OV OV OV B2 B2 B1 SC SC SC SC SC SC
POP 12HR 10 30 90 70 10
QPF 12HR 0 0.04 0.70 0.11 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S C S L D L L L S S
TSTMS S S C L C S
HEAT INDEX 85 89 89 83 87 87 91 97 94 85
MAX HEAT 89 90 87 90 97 97
DATE TUE 08/18/26 WED 08/19/26 THU 08/20/26 FRI 08/21/26
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 73 88 71 89 74 89 71 84
TEMP 75 74 86 81 73 73 87 83 76 76 87 82 73 72 82 78
DEWPT 68 66 65 62 63 64 66 67 68 69 69 66 65 63 63 62
PWIND DIR NW NW NW SW S NW N NE
WIND CHAR GN GN LT GN GN GN GN GN
AVG CLOUDS FW FW FW FW FW FW FW FW SC SC SC B1 B1 B1 SC B1
POP 12HR 5 0 0 5 20 40 40 20
RAIN SHWRS S S C C S S S
TSTMS S S S
MDZ013-152000-
BALTIMORE/WASHINGTON AIRPORT-ANNE ARUNDEL MD
39.19N 76.67W ELEV. 154 FT
801 AM EDT SAT AUG 15 2026
DATE SAT 08/15/26 SUN 08/16/26 MON 08/17/26
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 88 72 83 72 89
TEMP 81 86 86 80 76 74 73 74 78 81 79 75 75 74 73 74 84 88 87 81
DEWPT 71 69 68 68 70 70 71 71 71 72 73 73 74 74 73 74 76 76 74 73
RH 72 57 55 67 82 87 93 90 79 74 82 94 97100100100 77 68 65 77
WIND DIR E E E SE SE SE SE S S S S S SW W W W NW NW NW NW
WIND SPD 5 4 4 3 3 3 3 5 9 11 11 10 6 5 5 5 9 10 8 4
CLOUDS CL SC SC SC B1 B2 B2 OV B2 OV OV B2 B2 B1 B1 SC SC SC SC FW
POP 12HR 5 30 80 80 10
QPF 12HR 0 0.01 0.84 0.23 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S L D C D D S S
TSTMS S S C C C S
HEAT INDEX 85 90 89 83 85 93 99 95 86
MAX HEAT 90 91 85 87 99 98
DATE TUE 08/18/26 WED 08/19/26 THU 08/20/26 FRI 08/21/26
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 68 88 71 89 68 83
TEMP 72 72 86 80 70 70 86 81 74 73 87 80 70 69 81 77
DEWPT 69 68 67 66 65 67 68 70 69 71 71 69 66 65 65 64
PWIND DIR NW NW NW S SW NW N NE
WIND CHAR LT LT LT LT LT GN LT LT
AVG CLOUDS FW FW FW FW FW FW FW FW SC SC SC B1 B1 B1 SC SC
POP 12HR 5 0 0 5 20 40 40 20
RAIN SHWRS S S C C S S S
TSTMS S S
MDZ011-152000-
BALTIMORE INNER HARBOR-BALTIMORE CITY MD
39.28N 76.61W ELEV. 20 FT
801 AM EDT SAT AUG 15 2026
DATE SAT 08/15/26 SUN 08/16/26 MON 08/17/26
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 73 84 75 90
TEMP 82 87 87 82 77 75 74 75 79 81 79 76 76 75 75 76 84 88 89 83
DEWPT 66 65 64 64 67 69 70 70 70 71 72 72 73 73 73 73 73 73 72 70
RH 58 48 46 55 71 82 87 84 74 72 79 87 90 94 94 90 70 61 57 65
WIND DIR E E E SE SE SE SE SE S S S S SW W W NW NW NW NW NW
WIND SPD 4 4 4 2 2 2 3 4 9 11 11 10 6 5 5 5 9 10 9 4
CLOUDS FW FW B1 SC SC B2 B2 OV B2 OV OV OV B2 B2 B1 B1 SC SC SC SC
POP 12HR 0 30 80 70 10
QPF 12HR 0 0.03 0.90 0.22 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S S L D C L L S S
TSTMS S S C C C S
HEAT INDEX 84 89 88 83 85 90 96 96 87
MAX HEAT 89 89 82 85 88 96 97
DATE TUE 08/18/26 WED 08/19/26 THU 08/20/26 FRI 08/21/26
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 72 88 70 89 73 89 69 84
TEMP 74 73 86 81 72 72 87 82 75 75 87 81 71 70 82 77
DEWPT 67 66 63 62 63 64 65 66 68 69 68 65 64 62 61 60
PWIND DIR NW NW W S SW NW N NE
WIND CHAR LT LT LT LT LT LT LT LT
AVG CLOUDS SC FW FW FW FW FW FW FW SC SC SC B1 B1 B1 SC SC
POP 12HR 5 0 0 5 20 40 40 20
RAIN SHWRS S S C C S S S
TSTMS S S S
WVZ052-152000-
MARTINSBURG AIRPORT-BERKELEY WV
39.41N 77.98W ELEV. 558 FT
801 AM EDT SAT AUG 15 2026
DATE SAT 08/15/26 SUN 08/16/26 MON 08/17/26
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 69 83 70 86
TEMP 79 84 84 78 74 72 71 71 75 81 80 77 74 72 71 73 82 86 84 78
DEWPT 66 67 66 67 68 68 69 69 71 73 73 73 72 72 71 72 72 72 69 68
RH 64 57 55 69 82 87 93 93 87 77 79 87 93100100 97 72 63 61 71
WIND DIR N S N N N SE SE S S S S S W W W NW NW NW NW NW
WIND SPD 0 2 0 0 0 3 5 8 10 11 9 6 5 6 6 6 10 11 10 6
CLOUDS FW SC SC B1 SC B2 B2 OV OV OV B2 B2 B2 B1 SC SC SC SC SC SC
POP 12HR 5 60 90 60 10
QPF 12HR 0 0.12 1.06 0.15 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S C L D D C L L
TSTMS S S C C C C
HEAT INDEX 87 86 86 84 87 92 88
MAX HEAT 87 87 86 87 92 91
DENSE FOG
DATE TUE 08/18/26 WED 08/19/26 THU 08/20/26 FRI 08/21/26
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 84 62 87 67 85 62 81
TEMP 68 67 84 77 65 66 85 81 71 70 83 77 65 65 79 74
DEWPT 65 64 61 61 60 62 65 66 66 67 67 65 62 61 61 61
PWIND DIR NW NW W SW W NW N N
WIND CHAR LT LT LT LT LT LT LT LT
AVG CLOUDS FW FW FW FW FW FW FW SC SC SC SC B1 B1 SC SC B1
POP 12HR 0 0 0 5 20 40 30 20
RAIN SHWRS S S C C S
TSTMS S
VAZ506-152000-
WASHINGTON DULLES AIRPORT-LOUDOUN VA
38.96N 77.45W ELEV. 321 FT
801 AM EDT SAT AUG 15 2026
DATE SAT 08/15/26 SUN 08/16/26 MON 08/17/26
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 87 70 84 72 88
TEMP 80 85 85 79 75 74 72 72 77 82 80 77 75 74 73 74 83 87 86 80
DEWPT 72 72 71 71 70 70 71 70 72 72 73 74 74 73 73 74 76 77 74 73
RH 77 65 63 77 84 87 97 93 85 72 79 90 97 97100100 80 72 68 79
WIND DIR NE N SE SE SE SE S S S S S S SW W W NW NW NW NW N
WIND SPD 2 2 3 2 3 3 5 6 10 11 9 6 5 4 5 6 10 10 9 5
CLOUDS FW B1 B1 SC B1 B1 B2 B2 OV OV B2 B2 B2 B1 SC SC SC SC SC FW
POP 12HR 10 40 90 70 10
QPF 12HR 0 0.02 0.66 0.03 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S C C D D C L L S S
TSTMS S S C C C
HEAT INDEX 84 91 90 87 84 91 99 94 84
MAX HEAT 91 94 87 89 99 98
DATE TUE 08/18/26 WED 08/19/26 THU 08/20/26 FRI 08/21/26
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 68 86 65 88 70 88 66 83
TEMP 71 70 85 79 68 69 86 82 73 72 85 79 69 67 80 76
DEWPT 68 68 69 67 65 66 71 71 69 70 73 70 66 64 67 66
PWIND DIR NW NW NW SW SW NW N N
WIND CHAR LT LT LT LT LT GN LT LT
AVG CLOUDS FW FW FW FW FW FW FW FW SC SC SC B1 B1 B1 SC B1
POP 12HR 5 0 0 5 20 40 40 20
RAIN SHWRS S S C C S
TSTMS S S
VAZ037-152000-
CHARLOTTESVILLE AIRPORT-ALBEMARLE VA
38.14N 78.45W ELEV. 640 FT
801 AM EDT SAT AUG 15 2026
DATE SAT 08/15/26 SUN 08/16/26 MON 08/17/26
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 87 72 91
TEMP 79 83 82 77 74 73 72 72 79 85 84 79 76 74 73 74 85 90 88 81
DEWPT 70 71 71 71 71 71 71 71 72 73 74 74 74 73 72 73 72 72 71 71
RH 74 67 69 82 90 93 97 97 79 67 72 85 94 97 97 97 65 56 57 72
WIND DIR NE NE E N N N N S S S SW SW SW W W W NW NW NW N
WIND SPD 4 3 3 0 0 0 0 6 8 9 9 8 6 5 5 4 6 6 5 4
CLOUDS B2 B1 B1 SC B1 B1 OV B2 OV B2 B2 SC SC SC SC FW SC SC SC SC
POP 12HR 30 50 70 10 5
QPF 12HR 0 0.04 0.27 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S C S S S L L L
TSTMS S C S S S C
HEAT INDEX 88 86 92 91 91 97 94 85
MAX HEAT 88 89 92 94 97 97
DATE TUE 08/18/26 WED 08/19/26 THU 08/20/26 FRI 08/21/26
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 67 89 70 90 66 84
TEMP 72 71 87 79 69 69 87 82 73 72 87 79 70 67 82 76
DEWPT 69 67 65 65 64 64 66 67 68 68 68 67 66 63 63 63
PWIND DIR NW NE NE S SW NW N NE
WIND CHAR LT LT LT LT LT LT LT LT
AVG CLOUDS SC SC FW FW SC FW FW FW FW SC SC B1 B1 B1 SC B1
POP 12HR 5 10 5 5 10 40 30 20
RAIN SHWRS C C S
TSTMS C S
MDZ003-152000-
HAGERSTOWN AIRPORT-WASHINGTON MD
39.71N 77.73W ELEV. 705 FT
801 AM EDT SAT AUG 15 2026
DATE SAT 08/15/26 SUN 08/16/26 MON 08/17/26
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 87 70 82 70 87
TEMP 79 85 84 79 74 73 72 72 75 79 78 76 73 72 71 73 81 86 84 78
DEWPT 66 67 67 68 67 67 68 69 70 72 73 73 73 72 71 73 73 73 71 70
RH 64 55 57 69 79 81 87 90 84 79 85 90100100100100 77 65 65 76
WIND DIR NE NE NE E SE SE S S S S S S SW W W NW NW NW NW NW
WIND SPD 2 2 3 3 3 4 6 9 11 10 8 6 5 4 5 5 9 10 9 5
CLOUDS FW SC B1 B1 B1 B2 B2 OV OV OV B2 B2 B2 B2 B1 B1 SC SC SC FW
POP 12HR 0 60 100 70 10
QPF 12HR 0 0.08 1.14 0.10 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S C L D D C L L
TSTMS S S C C C C
HEAT INDEX 88 87 86 93 89
MAX HEAT 88 89 84 93 92
DENSE FOG
DATE TUE 08/18/26 WED 08/19/26 THU 08/20/26 FRI 08/21/26
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 84 63 87 67 85 62 81
TEMP 67 67 83 77 65 66 84 80 71 70 83 77 65 65 79 74
DEWPT 66 65 64 63 61 63 67 67 67 68 69 66 63 62 63 62
PWIND DIR NW NW NW SW SW NW N N
WIND CHAR LT LT LT LT LT LT LT LT
AVG CLOUDS FW FW FW FW FW FW FW FW SC B1 SC B1 B1 B1 SC SC
POP 12HR 0 0 0 5 20 30 30 10
RAIN SHWRS S S C C
TSTMS S
MDZ017-152000-
PATUXENT RIVER NAS MD
38.29N 76.41W ELEV. 39 FT
801 AM EDT SAT AUG 15 2026
DATE SAT 08/15/26 SUN 08/16/26 MON 08/17/26
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 87 74 86 75 91
TEMP 81 85 85 80 77 76 75 77 81 84 83 78 77 77 76 78 85 89 90 84
DEWPT 73 71 70 70 72 71 71 72 71 72 72 74 75 75 75 76 76 75 74 74
RH 77 63 61 72 85 85 87 85 72 67 70 88 94 94 97 94 75 64 60 72
WIND DIR E SE E SE SE SE S S S S S S SW SW W NW NW NW NW NW
WIND SPD 5 4 4 4 6 5 5 6 11 14 16 12 10 9 8 6 9 9 6 3
CLOUDS FW SC FW B1 FW B1 B2 B2 B2 B2 B2 B2 B2 SC SC SC FW SC SC FW
POP 12HR 5 10 70 70 20
QPF 12HR 0 0 0.46 0.63 0.04
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS C C L L L S S
TSTMS C C C S S
HEAT INDEX 86 90 90 83 85 90 88 94 99 99 91
MAX HEAT 91 92 90 91 99 101
DATE TUE 08/18/26 WED 08/19/26 THU 08/20/26 FRI 08/21/26
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 74 87 72 87 75 89 71 83
TEMP 76 76 85 80 75 74 85 82 78 77 86 82 75 73 81 78
DEWPT 71 70 69 67 67 68 69 70 71 72 72 71 68 67 68 66
PWIND DIR N N S S S NW N NE
WIND CHAR LT LT LT LT GN GN GN GN
AVG CLOUDS FW FW FW FW FW FW FW FW FW SC SC B1 B1 B1 SC B1
POP 12HR 5 5 0 5 10 40 40 30
RAIN SHWRS C C C S C
TSTMS S S
WVZ502-152000-
PETERSBURG WV
38.99N 79.15W ELEV. 963 FT
801 AM EDT SAT AUG 15 2026
DATE SAT 08/15/26 SUN 08/16/26 MON 08/17/26
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 68 87 70 87
TEMP 77 83 81 76 72 70 70 70 79 84 85 79 74 72 71 71 80 85 86 79
DEWPT 72 72 73 72 70 69 68 70 72 73 72 72 71 70 69 70 73 72 70 70
RH 85 70 77 87 93 97 93100 79 70 65 79 90 93 93 97 79 65 59 74
WIND DIR N E E SE S S S S SW W W SW W W W W NW NW NW NW
WIND SPD 1 1 1 1 1 2 3 4 5 6 6 5 4 3 2 2 3 6 6 3
WIND GUST 17
CLOUDS SC B1 B1 B1 SC B1 B2 OV B2 B1 SC B1 B1 B1 B1 B1 SC SC SC SC
POP 12HR 50 70 80 50 20
QPF 12HR 0.04 0.24 0.28 0.01 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S C C S C D C C C C S S S S
TSTMS C C S S C C C S S
HEAT INDEX 88 86 90 91 84 91 91
MAX HEAT 88 86 90 92 91 93
DENSE FOG
DATE TUE 08/18/26 WED 08/19/26 THU 08/20/26 FRI 08/21/26
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 59 90 66 86 60 82
TEMP 67 65 85 75 62 63 87 81 69 68 83 76 64 62 79 73
DEWPT 66 64 63 63 61 61 65 67 65 65 68 66 63 61 63 62
PWIND DIR NW NW W SW SW NW N NE
WIND CHAR LT LT LT LT LT LT LT LT
AVG CLOUDS SC FW FW FW FW FW FW FW B1 B1 SC B1 B1 SC SC B1
POP 12HR 10 5 0 5 30 30 30 30
RAIN SHWRS C C S C C S C
TSTMS S C S S
MDZ014-152000-
ANNAPOLIS MD
38.99N 76.49W ELEV. 7 FT
801 AM EDT SAT AUG 15 2026
DATE SAT 08/15/26 SUN 08/16/26 MON 08/17/26
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 87 74 83 74 89
TEMP 82 87 86 83 78 76 75 76 81 83 81 78 76 76 75 77 86 89 89 85
DEWPT 70 68 66 67 70 71 71 71 71 72 72 73 74 74 74 74 74 74 73 73
RH 67 53 51 59 76 85 87 85 72 70 74 85 94 94 97 90 68 61 59 67
WIND DIR NE E E SE SE S S S S S S S SW W W NW NW NW NW NW
WIND SPD 6 5 5 1 5 5 5 6 12 14 16 12 10 8 6 6 10 11 9 4
WIND GUST 26
CLOUDS FW FW FW SC SC B1 B2 OV B2 B2 B2 B2 B2 B1 B1 SC SC SC SC FW
POP 12HR 5 20 80 80 10
QPF 12HR 0 0.02 0.83 0.41 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS C D C D D S S
TSTMS S C C C S
HEAT INDEX 86 91 88 86 85 88 85 94 98 97 92
MAX HEAT 91 91 83 88 88 98 98
DATE TUE 08/18/26 WED 08/19/26 THU 08/20/26 FRI 08/21/26
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 74 86 71 89 74 90 70 84
TEMP 76 75 86 81 73 73 87 82 76 76 87 82 73 73 82 78
DEWPT 70 68 65 66 66 67 69 69 70 71 72 69 66 65 66 64
PWIND DIR N N SW S S NW N NE
WIND CHAR LT LT LT LT LT GN LT LT
AVG CLOUDS SC FW FW FW FW FW CL FW FW SC SC B1 B1 B1 SC B1
POP 12HR 5 0 0 5 20 40 40 30
RAIN SHWRS S C C S S C
TSTMS S S
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