932  
FOUS51 KLWX 170533  
PFMLWX  
 
POINT FORECAST MATRICES  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
133 AM EDT TUE OCT 17 2017  
 
VAZ054-172100-  
REAGAN NATIONAL AIRPORT-ARLINGTON VA  
38.86N 77.03W ELEV. 66 FT  
133 AM EDT TUE OCT 17 2017  
 
DATE TUE 10/17/17 WED 10/18/17 THU 10/19/17  
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 61 43 69 48 72  
TEMP 46 46 55 60 59 52 49 47 45 47 60 67 66 59 55 52 51 51 64 70 69 62  
DEWPT 36 36 36 35 34 37 38 39 37 39 44 43 44 45 46 45 43 44 46 46 47 48  
RH 68 68 49 39 39 56 66 74 73 74 55 42 45 60 72 77 74 77 52 42 45 60  
WIND DIR N N N N N N N N N N N N S N S SW SW SW SW SW SW S  
WIND SPD 5 6 4 1 0 0 0 0 0 0 0 0 1 0 0 0 0 2 3 3 4 3  
CLOUDS CL CL CL CL CL CL CL CL CL CL CL CL FW FW CL FW CL FW CL CL FW FW  
POP 12HR 0 0 0 0 0  
QPF 12HR 0 0 0 0 0  
SNOW 12HR 00-00 00-00 00-00  
 
DATE FRI 10/20/17 SAT 10/21/17 SUN 10/22/17 MON 10/23/17  
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 51 73 50 75 53 75 57 75  
TEMP 55 53 72 62 54 51 74 63 55 54 74 64 59 58 73 67  
DEWPT 48 47 52 51 48 47 51 53 52 51 56 57 57 56 60 60  
PWIND DIR W NW NW S S S S S  
WIND CHAR LT LT LT LT LT LT LT LT  
AVG CLOUDS FW FW CL CL CL FW FW FW SC SC SC SC SC SC SC B1  
POP 12HR 0 0 5 5 5 5 10 20  
RAIN SHWRS S S  
 

 
MDZ013-172100-  
BALTIMORE/WASHINGTON AIRPORT-ANNE ARUNDEL MD  
39.19N 76.67W ELEV. 154 FT  
133 AM EDT TUE OCT 17 2017  
 
DATE TUE 10/17/17 WED 10/18/17 THU 10/19/17  
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 60 41 69 48 71  
TEMP 42 42 53 59 58 51 47 45 43 45 59 67 66 59 55 52 51 51 63 69 69 61  
DEWPT 35 35 35 34 34 37 38 38 36 38 43 43 44 45 45 45 43 44 45 45 46 48  
RH 76 76 50 39 40 59 71 76 76 76 55 42 45 60 69 77 74 77 52 42 44 62  
WIND DIR N N N NW W SW SW N N N N SW S S S N N SW SW SW SW SW  
WIND SPD 3 3 4 3 2 1 1 0 0 0 0 1 2 1 1 0 0 2 5 5 5 4  
CLOUDS CL CL CL CL CL CL CL CL CL CL CL FW FW FW CL FW CL FW CL CL FW FW  
POP 12HR 0 0 0 0 0  
QPF 12HR 0 0 0 0 0  
SNOW 12HR 00-00 00-00 00-00  
 
DATE FRI 10/20/17 SAT 10/21/17 SUN 10/22/17 MON 10/23/17  
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 51 73 49 74 53 75 57 75  
TEMP 55 52 72 60 53 50 73 63 55 54 74 64 59 58 74 69  
DEWPT 47 47 50 50 47 46 49 51 52 51 56 56 57 56 59 59  
PWIND DIR W NW N SE S S S S  
WIND CHAR LT LT LT LT LT LT LT LT  
AVG CLOUDS FW FW CL CL CL FW FW FW FW SC SC SC SC SC SC B1  
POP 12HR 0 0 5 5 5 5 10 20  
RAIN SHWRS S S  
 

 
MDZ011-172100-  
BALTIMORE INNER HARBOR-BALTIMORE CITY MD  
39.28N 76.61W ELEV. 20 FT  
133 AM EDT TUE OCT 17 2017  
 
DATE TUE 10/17/17 WED 10/18/17 THU 10/19/17  
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 60 46 69 50 71  
TEMP 46 45 54 59 58 53 50 49 48 49 61 67 67 60 56 54 52 53 64 70 69 62  
DEWPT 35 34 34 34 34 37 39 39 38 39 43 43 44 46 46 46 44 45 45 45 46 48  
RH 65 65 46 39 40 54 66 68 68 68 51 42 43 60 69 74 74 74 50 41 44 60  
WIND DIR N N N N SW SW SW N N N N S S N N SW N SW SW SW SW SW  
WIND SPD 3 3 3 3 2 1 1 0 0 0 0 1 1 0 0 0 0 1 4 4 5 3  
CLOUDS CL CL CL CL CL CL CL CL CL CL CL CL FW FW CL FW CL FW CL CL FW FW  
POP 12HR 0 0 0 0 0  
QPF 12HR 0 0 0 0 0  
SNOW 12HR 00-00 00-00 00-00  
 
DATE FRI 10/20/17 SAT 10/21/17 SUN 10/22/17 MON 10/23/17  
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 53 72 51 74 55 75 58 75  
TEMP 57 54 71 61 54 52 73 64 56 56 74 66 60 59 74 69  
DEWPT 48 48 50 49 47 46 48 50 52 51 55 56 57 56 59 59  
PWIND DIR W NW N SE S S S S  
WIND CHAR LT LT LT LT LT LT LT LT  
AVG CLOUDS FW FW CL CL CL FW FW FW FW SC SC SC SC SC SC B1  
POP 12HR 0 0 5 5 5 5 10 20  
RAIN SHWRS S S  
 

 
WVZ052-172100-  
MARTINSBURG AIRPORT-BERKELEY WV  
39.41N 77.98W ELEV. 558 FT  
133 AM EDT TUE OCT 17 2017  
 
DATE TUE 10/17/17 WED 10/18/17 THU 10/19/17  
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 61 35 69 41 73  
TEMP 39 39 52 59 58 48 43 40 38 40 57 67 66 55 50 47 45 45 62 71 70 59  
DEWPT 33 33 35 35 35 39 37 36 34 35 43 43 43 44 42 41 37 37 45 46 47 47  
RH 79 79 52 40 42 71 79 85 85 82 59 42 43 66 74 79 73 73 54 41 44 64  
WIND DIR NW NW NW W SW S SW SW N N N S S S S SW S SW SW SW SW SW  
WIND SPD 2 1 2 2 3 2 2 0 0 0 0 1 2 1 1 1 0 1 3 3 4 3  
CLOUDS CL CL CL CL CL CL CL CL CL CL CL FW CL FW CL FW CL CL CL FW FW FW  
POP 12HR 0 0 0 0 0  
QPF 12HR 0 0 0 0 0  
SNOW 12HR 00-00 00-00 00-00  
FROST Y Y  
 
DATE FRI 10/20/17 SAT 10/21/17 SUN 10/22/17 MON 10/23/17  
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 45 73 44 74 48 75 51 75  
TEMP 51 46 71 59 49 45 72 61 52 49 72 62 55 52 74 64  
DEWPT 45 43 49 49 45 43 50 51 48 46 55 53 52 50 58 56  
PWIND DIR W NW NW S S S S S  
WIND CHAR LT LT LT LT LT LT LT LT  
AVG CLOUDS FW FW FW CL CL FW FW SC SC SC SC SC SC SC SC B1  
POP 12HR 0 0 5 5 5 5 10 20  
RAIN SHWRS S S  
 

 
VAZ506-172100-  
WASHINGTON DULLES AIRPORT-LOUDOUN VA  
38.96N 77.45W ELEV. 321 FT  
133 AM EDT TUE OCT 17 2017  
 
DATE TUE 10/17/17 WED 10/18/17 THU 10/19/17  
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 61 37 70 44 72  
TEMP 41 40 53 59 58 49 44 42 40 42 59 68 67 57 52 49 47 48 62 70 69 60  
DEWPT 35 34 35 34 34 38 38 37 35 36 43 43 42 44 44 43 41 41 45 45 46 47  
RH 79 79 50 39 40 66 79 82 82 79 55 40 40 62 74 80 79 77 54 41 44 62  
WIND DIR N N N NW W E SW N N N N S S S S SW N SW SW SW SW S  
WIND SPD 2 2 4 3 2 1 1 0 0 0 0 1 1 0 1 0 0 1 3 2 4 3  
CLOUDS CL CL CL CL CL CL CL CL CL CL CL FW FW FW FW FW CL FW CL CL FW FW  
POP 12HR 0 0 0 0 0  
QPF 12HR 0 0 0 0 0  
SNOW 12HR 00-00 00-00 00-00  
FROST Y Y  
 
DATE FRI 10/20/17 SAT 10/21/17 SUN 10/22/17 MON 10/23/17  
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 48 73 47 75 50 76 54 75  
TEMP 53 50 71 58 51 49 73 63 55 52 75 64 58 55 73 66  
DEWPT 46 46 51 50 47 45 51 52 51 49 55 55 55 53 58 59  
PWIND DIR W NW NW S S S S S  
WIND CHAR LT LT LT LT LT LT LT LT  
AVG CLOUDS FW FW CL CL CL FW FW SC SC SC SC SC SC SC SC B1  
POP 12HR 0 0 5 5 5 5 10 20  
RAIN SHWRS S S  
 

 
VAZ037-172100-  
CHARLOTTESVILLE AIRPORT-ALBEMARLE VA  
38.14N 78.45W ELEV. 640 FT  
133 AM EDT TUE OCT 17 2017  
 
DATE TUE 10/17/17 WED 10/18/17 THU 10/19/17  
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 62 35 70 41 74  
TEMP 40 41 54 60 59 49 43 41 39 40 58 68 67 56 50 47 45 46 63 72 71 60  
DEWPT 36 35 36 35 36 38 38 37 34 34 42 42 43 44 43 41 37 38 44 44 46 46  
RH 85 79 50 39 42 66 82 85 82 79 55 39 42 64 77 79 73 73 50 37 41 60  
WIND DIR N N N NE SE E NW N N N N S S N N N N SW SW SW SW SW  
WIND SPD 2 2 3 2 2 1 1 0 0 0 0 2 2 0 0 0 0 2 3 2 3 3  
CLOUDS CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL FW CL FW CL CL FW FW  
POP 12HR 0 0 0 0 0  
QPF 12HR 0 0 0 0 0  
SNOW 12HR 00-00 00-00 00-00  
 
DATE FRI 10/20/17 SAT 10/21/17 SUN 10/22/17 MON 10/23/17  
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 45 75 47 76 49 76 52 76  
TEMP 51 47 72 58 51 49 74 61 53 51 74 61 55 53 75 66  
DEWPT 44 42 50 51 47 45 52 52 50 47 54 54 53 52 59 59  
PWIND DIR W W W SW S S S SW  
WIND CHAR LT LT LT LT LT LT LT LT  
AVG CLOUDS FW FW CL CL CL FW FW SC SC SC SC SC SC SC B1 B1  
POP 12HR 0 0 5 5 5 5 10 30  
RAIN SHWRS C C  
 

 
MDZ003-172100-  
HAGERSTOWN AIRPORT-WASHINGTON MD  
39.71N 77.73W ELEV. 705 FT  
133 AM EDT TUE OCT 17 2017  
 
DATE TUE 10/17/17 WED 10/18/17 THU 10/19/17  
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 60 39 68 43 71  
TEMP 40 39 52 58 57 50 46 43 42 43 58 66 65 56 51 48 46 47 61 69 68 60  
DEWPT 33 33 35 34 35 38 38 37 36 37 43 42 43 44 43 42 39 40 45 45 46 46  
RH 76 79 52 40 43 63 73 79 79 79 57 42 45 64 74 80 76 76 56 42 45 60  
WIND DIR N N NW W SW S S SW N N N S S S S S N SW SW SW SW SW  
WIND SPD 2 2 2 3 3 2 2 0 0 0 0 1 2 1 0 1 0 2 4 4 5 3  
CLOUDS CL CL CL CL CL CL CL CL CL CL CL CL CL FW CL FW CL FW CL FW FW FW  
POP 12HR 0 0 0 0 0  
QPF 12HR 0 0 0 0 0  
SNOW 12HR 00-00 00-00 00-00  
FROST Y Y  
 
DATE FRI 10/20/17 SAT 10/21/17 SUN 10/22/17 MON 10/23/17  
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 48 71 46 73 50 74 52 74  
TEMP 53 49 69 59 51 47 71 59 54 51 73 63 56 53 72 65  
DEWPT 46 45 47 47 45 43 48 50 48 48 54 53 53 51 57 57  
PWIND DIR W NW NW SW S S S S  
WIND CHAR LT LT LT LT LT LT LT LT  
AVG CLOUDS FW FW FW CL CL FW FW SC SC SC SC SC SC SC SC B1  
POP 12HR 0 0 5 5 5 5 10 20  
RAIN SHWRS S S  
 

 
MDZ017-172100-  
PATUXENT RIVER NAS MD  
38.29N 76.41W ELEV. 39 FT  
133 AM EDT TUE OCT 17 2017  
 
DATE TUE 10/17/17 WED 10/18/17 THU 10/19/17  
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 58 44 67 51 70  
TEMP 48 47 54 57 56 51 48 47 46 47 59 65 65 59 56 54 53 54 64 69 68 63  
DEWPT 38 37 36 36 36 39 39 41 41 42 44 43 44 47 47 48 47 48 49 48 49 51  
RH 68 68 50 45 47 63 71 79 83 83 57 45 46 64 72 80 80 80 58 47 51 65  
WIND DIR N N N N N NE W NW NW NW NW S S S S SW W SW SW SW SW SW  
WIND SPD 12 11 10 9 5 2 2 1 2 2 2 1 2 1 2 2 2 2 5 4 5 5  
CLOUDS CL CL CL CL CL CL CL CL CL CL CL CL FW FW CL FW CL FW CL CL FW FW  
POP 12HR 0 0 0 0 0  
QPF 12HR 0 0 0 0 0  
SNOW 12HR 00-00 00-00 00-00  
 
DATE FRI 10/20/17 SAT 10/21/17 SUN 10/22/17 MON 10/23/17  
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 55 72 54 73 57 74 60 76  
TEMP 58 56 71 61 56 56 73 63 59 59 74 65 63 62 76 68  
DEWPT 51 51 53 53 52 52 51 54 55 55 58 59 60 59 62 62  
PWIND DIR W NW N SE S S S S  
WIND CHAR LT LT LT LT LT LT GN GN  
AVG CLOUDS FW FW CL CL CL FW FW FW FW SC SC SC SC SC SC SC  
POP 12HR 0 0 5 5 5 5 5 10  
 

 
WVZ502-172100-  
PETERSBURG WV  
38.99N 79.15W ELEV. 963 FT  
133 AM EDT TUE OCT 17 2017  
 
DATE TUE 10/17/17 WED 10/18/17 THU 10/19/17  
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 64 38 71 42 73  
TEMP 36 37 53 62 61 51 46 43 41 43 60 69 68 57 51 48 46 46 62 71 70 59  
DEWPT 33 32 36 36 36 37 37 37 34 34 41 39 40 42 41 40 37 37 45 44 43 44  
RH 89 82 52 38 39 59 71 79 76 70 49 33 36 57 68 74 71 71 54 38 38 57  
WIND DIR W W N NW NW W W W W W N SE SE S SW SW W SW W W W W  
WIND SPD 2 2 1 2 2 1 2 1 1 1 0 1 2 1 1 1 2 2 3 3 4 2  
CLOUDS CL CL CL FW FW CL CL CL CL CL CL CL FW CL CL CL CL CL CL FW FW FW  
POP 12HR 0 0 0 0 0  
QPF 12HR 0 0 0 0 0  
SNOW 12HR 00-00 00-00 00-00  
FREEZE W W  
 
DATE FRI 10/20/17 SAT 10/21/17 SUN 10/22/17 MON 10/23/17  
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 45 74 45 77 49 77 53 75  
TEMP 51 46 70 58 49 46 73 59 52 49 74 61 56 54 73 63  
DEWPT 44 43 49 48 45 43 50 50 48 46 51 51 52 52 56 56  
PWIND DIR SW NW S S S S S SW  
WIND CHAR LT LT LT LT LT LT LT LT  
AVG CLOUDS FW FW FW CL FW FW FW SC SC SC SC SC SC SC B1 B1  
POP 12HR 0 0 5 5 5 5 10 30  
RAIN SHWRS C C  
 

 
MDZ014-172100-  
ANNAPOLIS MD  
38.99N 76.49W ELEV. 7 FT  
133 AM EDT TUE OCT 17 2017  
 
DATE TUE 10/17/17 WED 10/18/17 THU 10/19/17  
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 59 47 67 51 70  
TEMP 46 46 54 58 58 53 51 50 49 50 60 66 65 59 56 54 53 54 64 69 68 62  
DEWPT 40 39 38 37 37 39 40 41 39 41 45 45 47 48 48 47 46 47 48 48 49 50  
RH 79 76 54 45 45 59 66 71 68 71 58 47 52 67 74 77 77 77 56 47 51 65  
WIND DIR N N N N NW SW SW W W W W SW S S S SW SW SW SW SW SW SW  
WIND SPD 8 6 8 5 3 1 2 1 2 1 1 2 2 1 2 2 2 3 5 5 6 4  
CLOUDS CL CL CL CL CL CL CL CL CL CL CL CL FW FW CL FW CL FW CL CL FW FW  
POP 12HR 0 0 0 0 0  
QPF 12HR 0 0 0 0 0  
SNOW 12HR 00-00 00-00 00-00  
 
DATE FRI 10/20/17 SAT 10/21/17 SUN 10/22/17 MON 10/23/17  
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 54 72 53 73 56 73 60 74  
TEMP 57 56 71 63 55 54 72 64 58 57 72 66 63 61 73 68  
DEWPT 50 50 52 52 50 49 51 53 54 53 57 58 59 58 61 61  
PWIND DIR W NW N SE S S S S  
WIND CHAR LT LT LT LT LT LT LT GN  
AVG CLOUDS FW FW CL CL CL FW FW FW FW SC SC SC SC SC SC B1  
POP 12HR 0 0 5 5 5 5 5 10  
 

 
 
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