371  
FOUS51 KLWX 190837  
PFMLWX  
 
POINT FORECAST MATRICES  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
437 AM EDT FRI OCT 19 2018  
 
VAZ054-192100-  
REAGAN NATIONAL AIRPORT-ARLINGTON VA  
38.86N 77.03W ELEV. 66 FT  
437 AM EDT FRI OCT 19 2018  
 
DATE FRI 10/19/18 SAT 10/20/18 SUN 10/21/18  
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 63 53 66 46 53  
TEMP 44 46 56 62 62 58 56 55 54 55 62 65 64 56 52 50 49 47 51 53 51 45  
DEWPT 37 37 39 43 44 46 47 50 52 53 54 51 48 48 46 43 40 37 35 32 31 33  
RH 76 71 53 50 52 64 72 83 93 93 75 60 56 74 80 77 71 68 54 44 46 62  
WIND DIR W SW S S S S SW SW SW SW W W W NW NW NW NW NW NW NW NW NW  
WIND SPD 3 5 10 12 14 13 13 12 12 10 11 12 13 12 13 13 17 16 17 19 16 11  
CLOUDS CL CL FW FW SC OV OV OV OV B2 B2 B1 SC B1 B1 B1 SC FW SC FW FW SC  
POP 12HR 0 60 10 10 0  
QPF 12HR 0 0.09 0 0 0  
SNOW 12HR 00-00 00-00 00-00  
RAIN SHWRS S S L L  
 
DATE MON 10/22/18 TUE 10/23/18 WED 10/24/18 THU 10/25/18  
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 37 56 44 64 44 59 41 56  
TEMP 40 40 55 50 47 47 63 54 48 46 58 50 45 43 55 50  
DEWPT 35 34 36 40 42 41 45 45 43 40 42 42 39 37 40 41  
PWIND DIR NW SW SW W NW NW N N  
WIND CHAR GN LT LT LT LT LT LT LT  
AVG CLOUDS FW FW FW FW FW SC SC FW FW FW FW FW FW FW SC SC  
POP 12HR 0 0 5 5 5 5 5 5  
 

 
MDZ013-192100-  
BALTIMORE/WASHINGTON AIRPORT-ANNE ARUNDEL MD  
39.19N 76.67W ELEV. 154 FT  
437 AM EDT FRI OCT 19 2018  
 
DATE FRI 10/19/18 SAT 10/20/18 SUN 10/21/18  
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 52 65 45 52  
TEMP 40 39 53 60 61 57 55 54 53 54 61 64 63 55 51 49 48 46 50 52 50 45  
DEWPT 36 36 39 42 43 46 46 49 51 51 53 51 48 49 45 43 39 37 34 31 31 33  
RH 85 89 59 51 51 67 72 83 93 90 75 63 58 80 80 80 71 71 54 44 48 62  
WIND DIR W W SW SW S S SW SW SW SW W W W W W NW NW NW NW NW NW NW  
WIND SPD 3 3 6 10 10 9 9 10 10 8 9 11 13 11 12 12 16 14 18 18 16 10  
WIND GUST 24 23 26 29 31  
CLOUDS CL CL CL FW SC OV OV OV OV OV B2 B1 SC B1 B1 B1 B1 SC SC FW FW SC  
POP 12HR 0 60 10 10 0  
QPF 12HR 0 0.07 0 0 0  
SNOW 12HR 00-00 00-00 00-00  
RAIN SHWRS S S L L  
FROST Y Y  
 
DATE MON 10/22/18 TUE 10/23/18 WED 10/24/18 THU 10/25/18  
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 37 56 44 63 44 58 40 55  
TEMP 40 40 55 50 47 47 62 54 48 46 57 49 44 42 54 49  
DEWPT 33 33 35 39 41 40 45 44 42 40 42 41 37 36 39 39  
PWIND DIR NW SW SW W NW NW N N  
WIND CHAR LT LT LT LT LT GN LT LT  
AVG CLOUDS FW FW FW FW FW SC SC FW FW FW FW FW FW FW FW SC  
POP 12HR 0 0 5 5 5 5 5 5  
 

 
MDZ011-192100-  
BALTIMORE INNER HARBOR-BALTIMORE CITY MD  
39.28N 76.61W ELEV. 20 FT  
437 AM EDT FRI OCT 19 2018  
 
DATE FRI 10/19/18 SAT 10/20/18 SUN 10/21/18  
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 53 65 46 52  
TEMP 45 47 56 61 61 58 56 55 54 55 61 64 63 56 52 50 48 47 50 52 50 45  
DEWPT 36 36 38 41 43 46 47 49 52 52 53 50 48 48 46 43 40 37 34 30 31 32  
RH 70 65 51 48 51 64 72 80 93 90 75 60 58 74 80 77 74 68 54 43 48 60  
WIND DIR W W SW SW S S SW SW SW SW W W W W W NW NW NW NW NW NW NW  
WIND SPD 4 4 6 10 10 9 8 9 10 8 9 11 13 10 12 12 16 13 18 18 14 10  
WIND GUST 24 23 28 31  
CLOUDS CL CL CL FW SC OV OV OV OV B2 B1 B1 SC B1 B2 B1 B1 SC SC FW FW SC  
POP 12HR 0 60 10 10 0  
QPF 12HR 0 0.06 0 0 0  
SNOW 12HR 00-00 00-00 00-00  
RAIN SHWRS S S L L  
FROST Y Y  
 
DATE MON 10/22/18 TUE 10/23/18 WED 10/24/18 THU 10/25/18  
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 38 56 45 63 45 58 40 56  
TEMP 41 41 55 51 47 48 62 54 49 47 57 49 44 42 55 49  
DEWPT 33 33 36 39 41 40 44 43 41 40 41 40 37 35 39 38  
PWIND DIR NW SW SW W NW NW N N  
WIND CHAR LT LT LT GN LT GN LT LT  
AVG CLOUDS FW FW FW FW FW SC SC FW FW FW FW FW FW FW FW SC  
POP 12HR 0 0 5 5 5 5 5 5  
 

 
WVZ052-192100-  
MARTINSBURG AIRPORT-BERKELEY WV  
39.41N 77.98W ELEV. 558 FT  
437 AM EDT FRI OCT 19 2018  
 
DATE FRI 10/19/18 SAT 10/20/18 SUN 10/21/18  
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 50 62 42 49  
TEMP 35 34 51 60 61 56 54 53 52 52 58 61 60 52 48 46 45 43 47 49 47 41  
DEWPT 32 32 38 42 45 46 47 49 50 48 49 47 45 45 42 39 37 35 34 30 31 32  
RH 89 92 61 51 56 69 77 86 93 86 72 60 58 77 80 76 73 73 60 48 53 70  
WIND DIR SW SW S S S S S SW SW SW W W W W W NW NW NW NW NW NW NW  
WIND SPD 3 3 4 8 9 8 6 6 6 5 9 11 12 9 9 10 13 12 16 16 13 8  
WIND GUST 27 26  
CLOUDS CL CL CL FW SC OV OV OV OV B2 B1 B1 SC B1 B2 B2 SC SC B1 SC FW SC  
POP 12HR 0 60 30 20 5  
QPF 12HR 0 0.08 0.05 0.01 0  
SNOW 12HR 00-00 00-00 00-00  
RAIN SHWRS C C L L S S C C S S  
FREEZE W W  
 
DATE MON 10/22/18 TUE 10/23/18 WED 10/24/18 THU 10/25/18  
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 33 56 41 61 40 56 37 53  
TEMP 36 36 54 49 44 44 60 51 44 42 55 47 41 39 52 46  
DEWPT 31 30 36 38 36 37 44 42 38 37 40 38 35 33 38 37  
PWIND DIR W SW SW W NW NW NW N  
WIND CHAR LT LT LT LT LT LT LT LT  
AVG CLOUDS SC FW FW FW FW SC SC SC SC FW FW FW FW FW SC SC  
POP 12HR 0 0 5 5 5 5 5 5  
 

 
VAZ506-192100-  
WASHINGTON DULLES AIRPORT-LOUDOUN VA  
38.96N 77.45W ELEV. 321 FT  
437 AM EDT FRI OCT 19 2018  
 
DATE FRI 10/19/18 SAT 10/20/18 SUN 10/21/18  
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 50 64 43 51  
TEMP 37 36 52 60 61 56 54 53 52 52 59 63 61 54 50 47 46 44 48 50 49 43  
DEWPT 35 35 39 42 44 46 47 49 51 51 53 50 46 46 44 42 38 36 35 31 31 33  
RH 92 96 61 51 53 69 77 86 96 96 80 62 58 74 80 83 73 73 60 48 50 67  
WIND DIR W SW S S S S S SW SW SW W W W NW NW NW NW NW NW NW NW NW  
WIND SPD 2 3 6 9 11 10 10 9 10 8 9 11 12 10 10 12 16 13 17 17 14 9  
WIND GUST 25 27  
CLOUDS CL CL CL FW SC OV OV OV OV B2 B1 B1 SC B1 B1 B1 SC FW SC FW FW SC  
POP 12HR 0 60 20 10 0  
QPF 12HR 0 0.09 0 0 0  
SNOW 12HR 00-00 00-00 00-00  
RAIN SHWRS C C L L S S  
FROST Y Y  
 
DATE MON 10/22/18 TUE 10/23/18 WED 10/24/18 THU 10/25/18  
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 34 56 41 63 42 57 38 55  
TEMP 38 37 54 49 44 44 61 53 46 44 56 48 42 40 54 48  
DEWPT 33 32 36 38 39 38 45 44 41 39 41 40 37 34 39 39  
PWIND DIR W SW SW W NW NW N N  
WIND CHAR LT LT LT LT LT LT LT LT  
AVG CLOUDS FW FW FW FW FW SC SC SC FW FW FW FW FW FW SC SC  
POP 12HR 0 0 5 5 5 5 5 5  
 

 
VAZ037-192100-  
CHARLOTTESVILLE AIRPORT-ALBEMARLE VA  
38.14N 78.45W ELEV. 640 FT  
437 AM EDT FRI OCT 19 2018  
 
DATE FRI 10/19/18 SAT 10/20/18 SUN 10/21/18  
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 51 66 43 52  
TEMP 39 38 54 62 62 58 55 54 53 53 61 65 63 55 50 48 46 44 49 51 50 43  
DEWPT 35 36 42 43 45 47 49 50 52 52 53 50 47 46 44 41 37 35 32 30 30 33  
RH 85 92 64 50 54 67 80 86 96 96 75 58 56 72 80 77 71 70 52 44 46 67  
WIND DIR W SW S S S S SW SW SW SW W W W W W NW NW NW NW NW NW NW  
WIND SPD 2 2 5 9 10 8 8 8 8 6 8 10 10 8 6 9 11 10 12 12 10 5  
CLOUDS CL CL CL FW SC OV OV OV OV B2 B1 B1 SC SC B1 SC CL FW FW FW FW FW  
POP 12HR 0 60 20 10 0  
QPF 12HR 0 0.08 0.01 0 0  
SNOW 12HR 00-00 00-00 00-00  
RAIN SHWRS S S L L S S  
FROST Y Y  
 
DATE MON 10/22/18 TUE 10/23/18 WED 10/24/18 THU 10/25/18  
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 34 57 43 65 42 59 40 56  
TEMP 38 37 55 50 46 46 63 54 47 44 58 50 44 42 55 49  
DEWPT 32 31 35 39 39 38 45 44 41 39 42 41 39 36 41 40  
PWIND DIR W SW SW W NW N N N  
WIND CHAR LT LT LT LT LT LT LT LT  
AVG CLOUDS FW CL FW FW FW SC SC SC FW FW FW FW FW SC SC SC  
POP 12HR 0 0 5 5 5 5 5 10  
 

 
MDZ003-192100-  
HAGERSTOWN AIRPORT-WASHINGTON MD  
39.71N 77.73W ELEV. 705 FT  
437 AM EDT FRI OCT 19 2018  
 
DATE FRI 10/19/18 SAT 10/20/18 SUN 10/21/18  
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 50 61 41 49  
TEMP 39 39 52 58 59 55 53 52 51 52 57 60 59 51 47 45 44 42 46 48 47 41  
DEWPT 31 32 37 40 44 45 47 48 49 48 49 47 45 45 42 39 36 35 32 30 30 32  
RH 73 76 56 51 57 69 80 86 93 86 75 62 60 80 83 79 73 76 58 49 51 70  
WIND DIR SW SW S S S S S SW SW SW W W W NW NW NW NW NW NW NW NW NW  
WIND SPD 3 4 6 9 9 9 8 8 9 6 9 12 13 9 9 10 14 12 17 17 14 8  
WIND GUST 29 28  
CLOUDS CL CL CL FW SC OV OV OV OV B2 B1 B1 B1 B1 B2 B2 SC SC SC SC FW SC  
POP 12HR 0 60 30 30 5  
QPF 12HR 0 0.06 0.05 0.02 0  
SNOW 12HR 00-00 00-00 00-00  
RAIN SHWRS C C L L S S C C C C  
FROST Y Y  
 
DATE MON 10/22/18 TUE 10/23/18 WED 10/24/18 THU 10/25/18  
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 33 55 41 60 40 55 36 52  
TEMP 36 36 53 48 44 44 59 50 44 42 54 46 40 38 51 45  
DEWPT 31 30 36 37 36 37 43 41 38 37 39 38 34 33 36 36  
PWIND DIR W SW SW W NW NW NW N  
WIND CHAR LT LT LT LT LT LT LT LT  
AVG CLOUDS SC FW FW FW SC SC SC SC SC FW FW FW FW FW SC SC  
POP 12HR 0 0 5 5 5 5 5 5  
 

 
MDZ017-192100-  
PATUXENT RIVER NAS MD  
38.29N 76.41W ELEV. 39 FT  
437 AM EDT FRI OCT 19 2018  
 
DATE FRI 10/19/18 SAT 10/20/18 SUN 10/21/18  
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 56 68 48 55  
TEMP 43 42 55 62 63 60 58 58 57 58 64 67 66 58 54 52 51 49 53 55 53 49  
DEWPT 39 40 42 44 44 47 49 52 53 55 57 55 54 52 48 46 44 40 38 37 37 37  
RH 86 93 61 52 50 62 72 80 86 90 78 65 65 80 80 80 77 71 57 51 54 63  
WIND DIR W W SW S S S SW SW SW SW W W W W NW NW NW NW NW NW NW NW  
WIND SPD 5 5 8 11 12 12 14 14 13 13 12 12 12 11 18 17 23 20 23 21 19 14  
WIND GUST 23 25 25 24 28 32 34 33 25  
CLOUDS CL CL CL FW FW OV OV OV OV OV OV B1 B1 B1 SC B1 B1 SC SC FW FW FW  
POP 12HR 0 60 20 10 5  
QPF 12HR 0 0.13 0 0 0  
SNOW 12HR 00-00 00-00 00-00  
RAIN SHWRS S S L L S S  
FROST Y Y  
 
DATE MON 10/22/18 TUE 10/23/18 WED 10/24/18 THU 10/25/18  
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 42 57 49 65 50 59 46 57  
TEMP 45 44 56 53 51 51 64 58 53 51 58 53 49 48 56 53  
DEWPT 37 36 38 41 44 44 46 48 47 44 44 43 43 41 41 42  
PWIND DIR NW SW SW W NW N N N  
WIND CHAR GN LT GN GN GN GN GN GN  
AVG CLOUDS FW FW FW FW FW SC SC SC FW FW FW FW FW FW SC SC  
POP 12HR 0 0 5 5 5 5 5 5  
 

 
WVZ502-192100-  
PETERSBURG WV  
38.99N 79.15W ELEV. 963 FT  
437 AM EDT FRI OCT 19 2018  
 
DATE FRI 10/19/18 SAT 10/20/18 SUN 10/21/18  
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 67 51 59 39 46  
TEMP 37 34 54 64 65 59 56 54 53 52 56 58 57 49 45 43 42 40 44 46 44 39  
DEWPT 32 32 37 39 44 48 49 50 51 49 48 46 43 44 41 38 35 34 31 29 29 33  
RH 82 92 52 40 46 67 77 86 93 89 74 64 59 83 86 82 76 79 60 51 55 79  
WIND DIR W SW S S S S SW SW SW SW W W W W W NW NW NW NW NW NW NW  
WIND SPD 2 2 2 4 4 5 5 5 6 6 8 10 11 9 10 10 11 11 12 12 9 5  
CLOUDS CL CL CL FW SC OV OV OV B2 B2 B1 B1 SC B2 B2 B2 B2 B1 SC SC FW SC  
POP 12HR 0 60 40 40 5  
QPF 12HR 0 0.13 0.09 0.11 0  
SNOW 12HR 00-00 00-00 00-00  
RAIN SHWRS C C L L C C C C C C C C  
SNOWSHWRS C C  
FREEZE W W  
 
DATE MON 10/22/18 TUE 10/23/18 WED 10/24/18 THU 10/25/18  
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 32 61 41 61 37 57 35 55  
TEMP 35 36 59 51 45 44 60 49 42 40 56 46 40 38 54 47  
DEWPT 30 29 34 38 36 37 43 43 38 35 40 39 35 33 38 39  
PWIND DIR W SW SW W W NW W E  
WIND CHAR LT LT LT LT LT LT LT LT  
AVG CLOUDS SC FW FW FW SC SC SC SC SC FW FW FW FW SC SC SC  
POP 12HR 0 0 5 5 5 5 5 10  
 

 
MDZ014-192100-  
ANNAPOLIS MD  
38.99N 76.49W ELEV. 7 FT  
437 AM EDT FRI OCT 19 2018  
 
DATE FRI 10/19/18 SAT 10/20/18 SUN 10/21/18  
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 53 66 48 53  
TEMP 44 44 55 61 61 58 56 55 54 55 62 65 64 57 54 52 50 49 51 53 51 47  
DEWPT 38 37 39 43 45 47 48 50 52 53 54 52 49 49 46 44 41 38 36 34 33 35  
RH 79 76 55 51 56 67 74 83 93 93 75 63 58 75 74 74 71 66 56 48 50 63  
WIND DIR W W SW S S S SW SW SW SW W W W W NW NW NW NW NW NW NW NW  
WIND SPD 5 4 8 11 12 12 12 11 12 10 9 11 13 11 14 14 19 17 20 19 18 12  
WIND GUST 21 23 21 27 32 32 32 29 23  
CLOUDS CL CL CL FW FW OV OV OV OV OV B2 B1 SC B1 B1 B1 B1 SC SC FW FW SC  
POP 12HR 0 60 10 5 0  
QPF 12HR 0 0.07 0 0 0  
SNOW 12HR 00-00 00-00 00-00  
RAIN SHWRS S S L L  
FROST Y Y  
 
DATE MON 10/22/18 TUE 10/23/18 WED 10/24/18 THU 10/25/18  
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 40 56 47 63 47 58 43 56  
TEMP 43 42 55 52 49 49 62 55 50 49 57 51 46 45 55 50  
DEWPT 34 35 37 41 42 43 46 46 43 42 42 42 39 38 40 40  
PWIND DIR NW SW SW W NW NW N N  
WIND CHAR GN LT GN GN GN GN LT LT  
AVG CLOUDS FW FW FW FW FW SC SC FW FW FW FW FW FW FW SC SC  
POP 12HR 0 0 5 5 5 5 5 5  
 

 
 
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