Daily Forecasts

Sunday, December 4, 2016

Space Weather Forecast Discussion

:Product: Forecast Discussion
:Issued: 2016 Dec 04 1230 UTC
# Prepared by the DOC, NOAA, Space Weather Prediction Center
#
Solar Activity

.24 hr Summary...
Solar activity increased to low level activity due to a pair of
impulsive C1/Sf flares observed at 04/0251 UTC and 04/0723 UTC from
Region 2615 (S07W14, Dai/beta). Region 2615 continued its minor growth
phase in its intermediate and trailer spot areas and exhibited some weak
magnetic mixing within its intermediate spots. Region 2612 (N09W69,
Cao/beta) displayed penumbra decay in its trailer spot while Regions
2614 (N06W43) and 2616 (N18W41) decayed to plage. No Earth-directed
CMEs were observed in available coronagraph imagery.

.Forecast...
Solar activity is expected to continue at very low levels, with a chance
for C-class and a slight for M-class flare activity, over the next three
days (04-06 Dec).

Area Forecast Discussion

000  
FXUS61 KLWX 040838
AFDLWX

Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
338 AM EST Sun Dec 4 2016

.SYNOPSIS...
High pressure will remain overhead today. An upper-level
disturbance will pass through the area tonight and high pressure
will briefly return for Monday. Coastal low pressure will impact
the area Tuesday before high pressure briefly returns for
Wednesday. A potent cold front will move through late next week.

Climate Report

286  
CDUS41 KLWX 040522
CLIDCA


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1222 AM EST SUN DEC 4 2016


...................................

...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR DECEMBER 3 2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2016


WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
..................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 51 139 PM 71 2012 51 0 53
MINIMUM 42 1159 PM 15 1976 36 6 42
AVERAGE 47 43 4 48

PRECIPITATION (IN)
YESTERDAY 0.00 1.83 1901 0.11 -0.11 0.00
MONTH TO DATE 0.14 0.33 -0.19 1.07
SINCE DEC 1 0.14 0.33 -0.19 1.07
SINCE JAN 1 29.23 37.02 -7.79 41.25

SNOWFALL (IN)
YESTERDAY 0.0 1.0 1907 0.0 0.0
MONTH TO DATE 0.0 0.1 -0.1
SINCE JUL 1 0.0 0.6 -0.6
SNOW DEPTH 0

Saturday, December 3, 2016

7-Day Forecast

Tonight: Partly cloudy, with a low around 35°. Northwest wind 6 to 10 mph.

Space Weather Forecast Discussion

:Product: Forecast Discussion
:Issued: 2016 Dec 03 1230 UTC
# Prepared by the DOC, NOAA, Space Weather Prediction Center
#
Solar Activity

.24 hr Summary...
Solar activity was very low and only background flare activity was
observed. Region 2615 (S07W01, Dao/beta) exhibited intermediate and
trailer spot growth. Regions 2614 (N06W28, Bxo/beta) and 2616 (N18W27,
Axx/alpha) showed decay while Region 2612 (N09W56, Dao/beta) remained
unchanged. No Earth-directed CMEs were observed in available
coronagraph imagery.

.Forecast...
Solar activity is expected to continue at very low levels, with a chance
for C-class flare activity and a slight chance for M-class flare
activity, over the next three days (03-05 Dec).

Area Forecast Discussion

000  
FXUS61 KLWX 030829
AFDLWX

Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
329 AM EST Sat Dec 3 2016

.SYNOPSIS...
High pressure will gradually move into the region through Sunday.
An upper-level disturbance will pass through the area Sunday night
and high pressure will briefly return for Monday. Coastal low
pressure will impact the area Tuesday before high pressure briefly
returns for Wednesday. A potent cold front will move through late
next week.

Climatological Reports