Friday, May 25, 2018

7-Day Forecast


Air Quality Alert

Today: Sunny, with a high near 88°. Light south wind increasing to 6 to 11 mph in the morning.

Tonight: Partly cloudy, with a low around 70°. South wind 7 to 9 mph.

Area Forecast Discussion

977  
FXUS61 KLWX 250127 AAA
AFDLWX

Area Forecast Discussion...UPDATED
National Weather Service Baltimore MD/Washington DC
927 PM EDT Thu May 24 2018

.SYNOPSIS...
Surface high pressure across the Mid-Atlantic tonight will move
offshore on Friday. Weak disturbances will cross the area over
the weekend into early next week, before a potential low
pressure system approaches later in the week.

Space Weather Forecast Discussion

:Product: Forecast Discussion
:Issued: 2018 May 25 0030 UTC
# Prepared by the DOC, NOAA, Space Weather Prediction Center
#
Solar Activity

.24 hr Summary...
Solar activity decreased to low levels. Region 2710 (N17E25, Axx/alpha)
re-intensified just enough to reform an umbral spot in its trailing,
positive polarity magnetic field. Despite the spot reemergence, the
overall magnetic field gradient and shear remained very weak. This was,
however, the source region for the largest flare of the period, a B9/Sf
flare at 24/1230 UTC. Region 2711 (N06W41, Cai/beta) was in a decay
phase early in the period, but underwent magnetic flux intensification
as the period progressed and redevelopment of trailer and intermediate
spots occurred. Even so, the regions magnetic gradient and shear were
minor and it was inactive. Region 2712 (N13E75, Cso/beta) was assigned
to an active region and associated spots that rotated onto the visible
disk. The region produced multiple B-class enhancements and an optical
subflare during the reporting period.

No CMEs were observed in available SOHO/LASCO coronagraph imagery.

.Forecast...
Solar activity is expected to remain very low, with a decreasing chance
of C-class flares all three days (25-27 May) based on activity trends
(persistence), and lack of magnetic shear and loose magnetic gradients
in all three regions. Even though severe foreshortening prevents a more
detailed analysis of region 2712 at this time, it seems likely from
optical observatories reports and SDO/HMI imagery that the region may
be a simple bipolar group; the low amount and level of flare activity
seems to support this; and probabilities for this region were decreased
slightly.


Climate Report

000  
CDUS41 KLWX 242123
CLIDCA


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
523 PM EDT THU MAY 24 2018


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

...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR MAY 24 2018...
VALID TODAY AS OF 0500 PM LOCAL TIME.

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2018


WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE
VALUE (LST) VALUE VALUE FROM
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 87 257 PM 92 1964 78 9
1884
MINIMUM 63 505 AM 41 1905 59 4
AVERAGE 75 68 7

PRECIPITATION (IN)
TODAY 0.00 1.97 1897 0.13 -0.13
MONTH TO DATE 7.37 3.07 4.30
SINCE MAR 1 12.88 9.61 3.27
SINCE JAN 1 18.61 15.04 3.57

SNOWFALL (IN)
TODAY 0.0 MM MM 0.0 0.0
MONTH TO DATE 0.0 0.0 0.0
SINCE JUL 1 7.8 15.4 -7.6
SNOW DEPTH 0

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