Old Res Weather

Lexington, Massachusetts, USA

54°F
5/15/2021 6:53am 
  • Lexington Conditions: Clear
  • Temperature: 54.0°F / 12.2°CWarmer 1.7°F than last hour.
  • Dew Point: 45.1°FIncreased 1.6°Fsince last hour.
  • Relative Humidity: 72
  • Wind: Calm, 10-min avg: Calm, gust: None
  • Barometer: 30.21 in Steady
  • Visibility: 10 miles
  • Rain Today: 0.00 in
  • UV Index: $VPuv None
  •   

National Short Range Forecast Discussion

Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
322 AM EDT Sat May 15 2021

Valid 12Z Sat May 15 2021 - 12Z Mon May 17 2021

...There is a Slight Risk of severe thunderstorms over parts of the
Central/Southern High Plains through Sunday morning...

...There is a Critical Risk of fire weather over parts of the Great
Basin/Southwest through Sunday morning...

A quasi-stationary front extends from Middle Mississippi Valley westward
to the Central/Southern High Plains, then into the Great Basin through
Monday morning. Moisture from the Western Gulf of Mexico will stream
northward over the Plains and the Mississippi Valley that will help
produce showers and thunderstorms over parts of the Central/Southern
Plains and Middle/Lower Mississippi Valley through Monday.  Additionally,
the showers and thunderstorms will also develop over parts of the
Northern/Central Rockies into the Great Basin.  The SPC has issued a
Slight Risk of severe thunderstorms over parts of the Central/Southern
High Plains on Saturday.  The main threats from the severe thunderstorms
are frequent lightning, severe thunderstorm wind gust, hail, and a few
tornadoes.

Meanwhile, upper-level energy over the Upper Midwest will produce rain
over the area through Saturday night.  On Saturday, rain will develop over
parts of the Great Lakes and the Northeast. On Sunday, the light rain will
expand into parts of the Mid-Atlantic.  An upper-level low will develop
over parts of California on Saturday into Sunday that will move into parts
of the Southwest/Great Basin overnight Sunday into Monday.  The energy
will produce scattered rain over parts of California.  Additionally, as
the upper-level low develops, dry conditions and gusty winds have led to a
Critical Risk of fire weather over parts of the Great Basin/Southwest
through Sunday morning.

Ziegenfelder

Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php