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The Data originates at the National Weather Service, and is
made available here by the
UAlbany Department of Atmospheric and Environmental Sciences
Surface Observations
KDCA 222252Z 32006KT 10SM CLR 17/M03 A3007 RMK AO2 SLP182 T01721028=
KDCA 222352Z 33004KT 10SM CLR 16/M04 A3007 RMK AO2 SLP183 T01611044 10183 20161
53001=
KDCA 230052Z 00000KT 10SM CLR 17/M04 A3009 RMK AO2 SLP190 T01671039=
KDCA 230152Z 16005KT 10SM CLR 12/01 A3012 RMK AO2 SLP198 T01220011=
KDCA 230252Z 19005KT 10SM CLR 12/02 A3012 RMK AO2 SLP200 T01170022 51017=
KDCA 230352Z 20003KT 10SM CLR 11/02 A3013 RMK AO2 SLP202 T01110017=
KDCA 230452Z 22003KT 10SM CLR 10/02 A3013 RMK AO2 SLP202 T01000017=
KDCA 230552Z 23003KT 10SM CLR 09/02 A3013 RMK AO2 SLP201 T00940017 10167 20089
50001=
KDCA 230652Z 22004KT 10SM CLR 08/03 A3013 RMK AO2 SLP201 T00830028=
KDCA 230752Z 24003KT 10SM FEW250 08/03 A3013 RMK AO2 SLP201 T00830028=
KDCA 230852Z 25004KT 10SM FEW250 07/03 A3013 RMK AO2 SLP203 T00720033 53001=
KDCA 230952Z 24004KT 10SM FEW170 FEW200 07/03 A3015 RMK AO2 SLP207 T00670033=
KDCA 231052Z 22004KT 10SM FEW200 08/04 A3017 RMK AO2 SLP215 T00780039=
KDCA 231152Z 20004KT 10SM FEW250 09/05 A3018 RMK AO2 SLP220 T00940050 10094
20067 53018=
KDCA 231252Z 20004KT 10SM SCT250 12/04 A3018 RMK AO2 SLP219 T01220044=
KDCA 231352Z 17005KT 10SM SCT250 14/06 A3017 RMK AO2 SLP216 T01390061=
KDCA 231452Z 16008KT 10SM SCT250 17/07 A3015 RMK AO2 SLP210 T01670067 58010=
KDCA 231552Z 17008KT 10SM SCT250 19/02 A3012 RMK AO2 SLP198 T01940017=
KDCA 231652Z 17010KT 10SM FEW250 21/02 A3009 RMK AO2 SLP188 T02060017=
KDCA 231752Z 19010G19KT 10SM SCT250 21/02 A3006 RMK AO2 SLP179 T02060017 10211
20094 57031=
KDCA 231852Z 18013G22KT 10SM BKN250 21/01 A3003 RMK AO2 SLP168 T02110006=
KDCA 231952Z 21013G21KT 10SM BKN250 22/02 A2999 RMK AO2 SLP156 T02220017=
KDCA 232052Z 18013G23KT 10SM BKN250 22/02 A2996 RMK AO2 SLP147 T02220022 56031=
KDCA 232152Z 17014KT 10SM SCT250 21/05 A2995 RMK AO2 SLP142 T02110050=
KDCA 232252Z 18010KT 10SM FEW150 SCT250 19/07 A2993 RMK AO2 SLP136 T01940067=
Decoded Surface Observations
The weather observed at WASHINGTON DC, VA (KDCA) at 06:52 PM EDT was:
The skies were clear.
Temperature: 63F ( 17C) Dewpoint: 27F ( -3C) Relative Humidity: 25%
Winds from the NW (320 degs) at 7 mph.
Pressure: 1018.2 millibars. Altimeter:30.07 inches of mercury.
The prevailing visibility was 10 miles.
The weather observed at WASHINGTON DC, VA (KDCA) at 07:52 PM EDT was:
The skies were clear.
Temperature: 61F ( 16C) Dewpoint: 24F ( -4C) Relative Humidity: 24%
Winds from the NW (330 degs) at 5 mph.
Pressure: 1018.3 millibars. Altimeter:30.07 inches of mercury.
The prevailing visibility was 10 miles.
The maximum temperature in the past 6 hours was 65F.
The minimum temperature in the past 6 hours was 61F.
The weather observed at WASHINGTON DC, VA (KDCA) at 08:52 PM EDT was:
The skies were clear.
Temperature: 63F ( 17C) Dewpoint: 25F ( -4C) Relative Humidity: 23%
Winds from the CLM(CLM degs) at 0 mph.
Pressure: 1019.0 millibars. Altimeter:30.09 inches of mercury.
The prevailing visibility was 10 miles.
The weather observed at WASHINGTON DC, VA (KDCA) at 09:52 PM EDT was:
The skies were clear.
Temperature: 54F ( 12C) Dewpoint: 34F ( 1C) Relative Humidity: 47%
Winds from the SSE(160 degs) at 6 mph.
Pressure: 1019.8 millibars. Altimeter:30.12 inches of mercury.
The prevailing visibility was 10 miles.
The weather observed at WASHINGTON DC, VA (KDCA) at 10:52 PM EDT was:
The skies were clear.
Temperature: 53F ( 12C) Dewpoint: 36F ( 2C) Relative Humidity: 52%
Winds from the S (190 degs) at 6 mph.
Pressure: 1020.0 millibars. Altimeter:30.12 inches of mercury.
The prevailing visibility was 10 miles.
The weather observed at WASHINGTON DC, VA (KDCA) at 11:52 PM EDT was:
The skies were clear.
Temperature: 52F ( 11C) Dewpoint: 36F ( 2C) Relative Humidity: 54%
Winds from the SSW(200 degs) at 3 mph.
Pressure: 1020.2 millibars. Altimeter:30.13 inches of mercury.
The prevailing visibility was 10 miles.
The weather observed at WASHINGTON DC, VA (KDCA) at 12:52 AM EDT was:
The skies were clear.
Temperature: 50F ( 10C) Dewpoint: 36F ( 2C) Relative Humidity: 58%
Winds from the SW (220 degs) at 3 mph.
Pressure: 1020.2 millibars. Altimeter:30.13 inches of mercury.
The prevailing visibility was 10 miles.
The weather observed at WASHINGTON DC, VA (KDCA) at 01:52 AM EDT was:
The skies were clear.
Temperature: 49F ( 9C) Dewpoint: 35F ( 2C) Relative Humidity: 59%
Winds from the SW (230 degs) at 3 mph.
Pressure: 1020.1 millibars. Altimeter:30.13 inches of mercury.
The prevailing visibility was 10 miles.
The maximum temperature in the past 6 hours was 62F.
The minimum temperature in the past 6 hours was 48F.
The weather observed at WASHINGTON DC, VA (KDCA) at 02:52 AM EDT was:
The skies were clear.
Temperature: 46F ( 8C) Dewpoint: 37F ( 3C) Relative Humidity: 71%
Winds from the SW (220 degs) at 5 mph.
Pressure: 1020.1 millibars. Altimeter:30.13 inches of mercury.
The prevailing visibility was 10 miles.
The weather observed at WASHINGTON DC, VA (KDCA) at 03:52 AM EDT was:
The skies were mostly clear.
Temperature: 46F ( 8C) Dewpoint: 37F ( 3C) Relative Humidity: 71%
Winds from the SW (240 degs) at 3 mph.
Pressure: 1020.1 millibars. Altimeter:30.13 inches of mercury.
The prevailing visibility was 10 miles.
The weather observed at WASHINGTON DC, VA (KDCA) at 04:52 AM EDT was:
The skies were mostly clear.
Temperature: 45F ( 7C) Dewpoint: 38F ( 3C) Relative Humidity: 76%
Winds from the WSW(250 degs) at 5 mph.
Pressure: 1020.3 millibars. Altimeter:30.13 inches of mercury.
The prevailing visibility was 10 miles.
The weather observed at WASHINGTON DC, VA (KDCA) at 05:52 AM EDT was:
The skies were mostly clear.
Temperature: 45F ( 7C) Dewpoint: 37F ( 3C) Relative Humidity: 76%
Winds from the SW (240 degs) at 5 mph.
Pressure: 1020.7 millibars. Altimeter:30.15 inches of mercury.
The prevailing visibility was 10 miles.
The weather observed at WASHINGTON DC, VA (KDCA) at 06:52 AM EDT was:
The skies were mostly clear.
Temperature: 46F ( 8C) Dewpoint: 39F ( 4C) Relative Humidity: 76%
Winds from the SW (220 degs) at 5 mph.
Pressure: 1021.5 millibars. Altimeter:30.17 inches of mercury.
The prevailing visibility was 10 miles.
The weather observed at WASHINGTON DC, VA (KDCA) at 07:52 AM EDT was:
The skies were mostly clear.
Temperature: 49F ( 9C) Dewpoint: 41F ( 5C) Relative Humidity: 74%
Winds from the SSW(200 degs) at 5 mph.
Pressure: 1022.0 millibars. Altimeter:30.18 inches of mercury.
The prevailing visibility was 10 miles.
The maximum temperature in the past 6 hours was 49F.
The minimum temperature in the past 6 hours was 44F.
The weather observed at WASHINGTON DC, VA (KDCA) at 08:52 AM EDT was:
The skies were partly cloudy.
Temperature: 54F ( 12C) Dewpoint: 39F ( 4C) Relative Humidity: 58%
Winds from the SSW(200 degs) at 5 mph.
Pressure: 1021.9 millibars. Altimeter:30.18 inches of mercury.
The prevailing visibility was 10 miles.
The weather observed at WASHINGTON DC, VA (KDCA) at 09:52 AM EDT was:
The skies were partly cloudy.
Temperature: 57F ( 14C) Dewpoint: 43F ( 6C) Relative Humidity: 59%
Winds from the S (170 degs) at 6 mph.
Pressure: 1021.6 millibars. Altimeter:30.17 inches of mercury.
The prevailing visibility was 10 miles.
The weather observed at WASHINGTON DC, VA (KDCA) at 10:52 AM EDT was:
The skies were partly cloudy.
Temperature: 62F ( 17C) Dewpoint: 44F ( 7C) Relative Humidity: 52%
Winds from the SSE(160 degs) at 9 mph.
Pressure: 1021.0 millibars. Altimeter:30.15 inches of mercury.
The prevailing visibility was 10 miles.
The weather observed at WASHINGTON DC, VA (KDCA) at 11:52 AM EDT was:
The skies were partly cloudy.
Temperature: 66F ( 19C) Dewpoint: 36F ( 2C) Relative Humidity: 32%
Winds from the S (170 degs) at 9 mph.
Pressure: 1019.8 millibars. Altimeter:30.12 inches of mercury.
The prevailing visibility was 10 miles.
The weather observed at WASHINGTON DC, VA (KDCA) at 12:52 PM EDT was:
The skies were mostly clear.
Temperature: 70F ( 21C) Dewpoint: 36F ( 2C) Relative Humidity: 28%
Winds from the S (170 degs) at 12 mph.
Pressure: 1018.8 millibars. Altimeter:30.09 inches of mercury.
The prevailing visibility was 10 miles.
The weather observed at WASHINGTON DC, VA (KDCA) at 01:52 PM EDT was:
The skies were partly cloudy.
Temperature: 69F ( 21C) Dewpoint: 35F ( 2C) Relative Humidity: 28%
Winds from the S (190 degs) at 12 mph.
Pressure: 1017.9 millibars. Altimeter:30.06 inches of mercury.
The prevailing visibility was 10 miles.
The maximum temperature in the past 6 hours was 70F.
The minimum temperature in the past 6 hours was 49F.
The weather observed at WASHINGTON DC, VA (KDCA) at 02:52 PM EDT was:
The skies were mostly cloudy.
Temperature: 70F ( 21C) Dewpoint: 34F ( 1C) Relative Humidity: 26%
Winds from the S (180 degs) at 15 mph.
Pressure: 1016.8 millibars. Altimeter:30.03 inches of mercury.
The prevailing visibility was 10 miles.
The weather observed at WASHINGTON DC, VA (KDCA) at 03:52 PM EDT was:
The skies were mostly cloudy.
Temperature: 72F ( 22C) Dewpoint: 36F ( 2C) Relative Humidity: 27%
Winds from the SW (210 degs) at 15 mph.
Pressure: 1015.6 millibars. Altimeter:29.99 inches of mercury.
The prevailing visibility was 10 miles.
The weather observed at WASHINGTON DC, VA (KDCA) at 04:52 PM EDT was:
The skies were mostly cloudy.
Temperature: 72F ( 22C) Dewpoint: 36F ( 2C) Relative Humidity: 27%
Winds from the S (180 degs) at 15 mph.
Pressure: 1014.7 millibars. Altimeter:29.96 inches of mercury.
The prevailing visibility was 10 miles.
The weather observed at WASHINGTON DC, VA (KDCA) at 05:52 PM EDT was:
The skies were partly cloudy.
Temperature: 70F ( 21C) Dewpoint: 41F ( 5C) Relative Humidity: 35%
Winds from the S (170 degs) at 16 mph.
Pressure: 1014.2 millibars. Altimeter:29.95 inches of mercury.
The prevailing visibility was 10 miles.
The weather observed at WASHINGTON DC, VA (KDCA) at 06:52 PM EDT was:
The skies were partly cloudy.
Temperature: 66F ( 19C) Dewpoint: 45F ( 7C) Relative Humidity: 46%
Winds from the S (180 degs) at 12 mph.
Pressure: 1013.6 millibars. Altimeter:29.93 inches of mercury.
The prevailing visibility was 10 miles.
Short Range Forecast
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Zone Forecast
DCZ001-240300-
District of Columbia-
Including the city of Washington
731 PM EDT Tue Apr 23 2024
.TONIGHT...Partly cloudy this evening, then becoming mostly
cloudy. A chance of showers after midnight. Lows in the mid 50s.
South winds 10 to 15 mph. Chance of rain 50 percent.
.WEDNESDAY...Mostly cloudy with a chance of showers in the
morning, then mostly sunny in the afternoon. Highs around 70.
West winds 10 to 15 mph, becoming northwest in the afternoon.
Chance of rain 30 percent.
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 40s. North
winds around 10 mph.
.THURSDAY...Mostly sunny. Highs in the lower 60s. Northeast winds
5 to 10 mph.
.THURSDAY NIGHT...Mostly clear. Lows in the lower 40s. East winds
around 5 mph.
.FRIDAY...Mostly sunny. Highs in the mid 60s.
.FRIDAY NIGHT...Partly cloudy. Lows in the mid 40s.
.SATURDAY...Mostly cloudy. Highs in the mid 60s.
.SATURDAY NIGHT...Mostly cloudy. Lows in the mid 50s.
.SUNDAY...Mostly sunny. Highs in the lower 80s.
.SUNDAY NIGHT...Partly cloudy. Lows in the lower 60s.
.MONDAY...Mostly sunny. Hot with highs in the mid 80s.
.MONDAY NIGHT...Partly cloudy. Lows in the mid 60s.
.TUESDAY...Mostly sunny with a chance of showers and
thunderstorms. Hot with highs in the mid 80s. Chance of rain
40 percent.
State Forecast
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State Forecast Discussion
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GFS Short-Range Model Output Statistics (MOS) Forecast
KDCA GFS MOS GUIDANCE 4/23/2024 1800 UTC
DT /APR 24 /APR 25 /APR 26
HR 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 12 18
N/X 56 74 46 62 45
TMP 65 61 60 58 59 65 71 71 65 58 52 48 49 55 59 61 57 52 48 48 63
DPT 39 43 44 46 48 49 45 42 41 40 36 33 31 27 27 29 30 33 33 35 35
CLD BK BK OV OV OV BK BK BK SC BK OV OV BK FW SC FW FW CL CL CL CL
WDR 17 18 20 21 22 26 30 31 34 36 36 01 02 02 02 02 07 12 15 07 14
WSP 12 10 11 07 08 12 14 16 15 14 13 13 12 08 07 06 08 05 04 05 09
P06 0 18 15 0 3 4 2 1 0 0 0
P12 18 20 6 2 1
Q06 0 0 0 0 0 0 0 0 0 0 0
Q12 0 0 0 0 0
T06 0/ 3 0/ 3 1/ 0 0/14 2/ 0 1/ 0 0/ 0 0/ 0 0/ 0 0/ 3
T12 3/ 4 4/14 1/ 1 0/ 0 0/ 6
POZ 0 0 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
POS 0 0 0 0 0 0 0 0 0 2 6 9 14 13 0 0 0 0 0 0 0
TYP R R R R R R R R R R R R R R R R R R R R R
SNW 0 0
CIG 8 8 8 7 6 8 7 8 8 7 6 6 7 8 8 8 8 8 8 8 8
VIS 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7
OBV N N N N N N N N N N N N N N N N N N N N N
GFS Long-Range Model Output Statistics (MOS) Forecast
KDCA GFSX MOS GUIDANCE 4/23/2024 1200 UTC
FHR 24 36| 48 60| 72 84| 96 108|120 132|144 156|168 180|192
WED 24| THU 25| FRI 26| SAT 27| SUN 28| MON 29| TUE 30|WED CLIMO
N/X 56 73| 47 62| 44 66| 48 63| 56 80| 65 84| 65 82| 63 47 70
TMP 59 65| 50 58| 48 60| 50 59| 59 74| 68 76| 67 74| 66
DPT 47 40| 33 31| 36 39| 41 47| 55 59| 61 59| 59 58| 57
CLD OV OV| PC CL| CL CL| OV OV| OV PC| CL PC| PC OV| PC
WND 12 15| 14 11| 8 10| 10 8| 7 9| 7 9| 7 9| 8
P12 24 8| 4 2| 2 0| 21 36| 18 17| 9 16| 25 28| 20 22 24
P24 29| 4| 3| 36| 32| 20| 41| 33
Q12 0 0| 0 0| 0 0| 0 1| 0 0| 0 0| |
Q24 0| 0| 0| 0| 0| 0| |
T12 1 3| 2 0| 0 0| 0 7| 4 7| 3 12| 9 21| 9
T24 | 3 | 0 | 7 | 7 | 7 | 18 | 26
PZP 0 0| 1 3| 0 0| 0 0| 0 0| 1 1| 0 0| 0
PSN 0 0| 0 0| 0 1| 1 0| 0 0| 0 0| 0 0| 0
PRS 0 0| 6 8| 1 0| 0 1| 1 1| 0 1| 0 1| 1
TYP R R| R R| R R| R R| R R| R R| R R| R
SNW 0| 0| 0| 0| 0| 0| |
NGM Model Output Statistics (MOS) Forecast
Climatological Summary
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Watch and Warning Statment
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Park/Ski Recreation Report/Forecast
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