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Lower St. Martin Parish, LA Weather and Climate Synopsis

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Weather Summary Hourly Observations Nowcast Agricultural Weather Outlook
7 Day Forecast Medium & Long Range Outlook Almanac Historical Facts

US Weekly Rainfall Departure

US Weekly Temperature Departure
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A joint service of the UK Ag Weather Center and the National Weather Service.

National Weather Service Shreveport LA
1136 PM CST Thu Dec 14 2017

VFR conditions will continue through the 15/06Z TAF period. An
extensive area of cirrus will continue to shift northeast across
much of the region overnight, with some AC cigs possible late at
the LFK terminal. These cirrus cigs may begin to temporarily clear 
portions of NE TX/SW AR Friday with the passage of a weak 
shortwave trough, before returning during the late evening as SW 
flow aloft becomes re-established over the Srn Plains ahead of a 
closed low over Wrn Old MX. Can't rule out a sct cu field now over
Ern OK/Wrn and Nrn AR spreading SE into SW AR by/after 12Z 
Friday, possibly affecting the TXK and ELD terminals, before 
thinning out during the afternoon as drier air continues to spill 
S in wake of a cold fropa over SE TX/Srn LA. N winds 5-10kts 
tonight will become NNW 5-7kts after 16Z Friday. /15/

National Ag. Weather Outlook, International Ag. Weather Summary
Current Surface Map, [2nd Source TWC]

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Regional Hourly Observations For LOWER ST. MARTIN County

SWR not available
Current Temperatures, Dewpoint, RH, Wind, Surface 4-Panel
Current Agricultural Weather Conditions in Louisiana
Based on observations at 300am CST, Friday December 15, 2017

Across Louisiana...temperatures are near 40 degrees north, near 45 degrees central, and near 53 degrees south. Current sky conditions are mostly cloudy north, cloudy central, and cloudy south. In the north, relative humidity is near 67%, and the dew point is near 30 degrees. In the central part of the state, relative humidity is near 77%, and the dew point is near 38 degrees. In the south, relative humidity is near 89%, and the dew point is near 50 degrees. Winds are coming from the north at 6 mph in the north, where conditions are favorable for spraying. Winds are coming from the north at 7 mph in the central, where conditions are favorable for spraying. Winds are coming from the north at 6 mph in the south, where conditions are favorable for spraying. The livestock cold stress index is in the no stress category north, no stress category central, and no stress category south. Based on current available observations, the highest temperature is 54 degrees at New Orleans Lakefront. The lowest temperature is 39 degrees at Manroe.

Current NOWCAST not available:
Nowcasts are not issued routinely during fair weather. Only when
precipitation or other significant weather is occuring in this Parish will these
forecasts be issued. Currently, there is no short term forecast in effect.

All NWS Radars (In near-real time), Current Livestock Heat Stress Index (LSI), Current Wind Chill Map
Hazardous Weather Outlook For LOWER ST. MARTIN County, LA

518 AM CST Thu Dec 14 2017

 DAY ONE  Today and Tonight
Isolated to scattered showers will develop late tonight in advance
of a passing cold front. This precipitation is expected to be
light and rainfall totals will be generally under a tenth of an

 DAYS TWO THROUGH SEVEN  Friday through Wednesday
Ongoing isolated to scattered showers Friday morning will diminish
by Friday afternoon as a cold front clears the area.

Showers and a few thunderstorms will develop late Saturday and
increase Sunday as an upper level trough moves across the area. A
few of these thunderstorms could be strong to severe on Sunday, 
but the overall severe weather threat is very low at this time.

Scattered showers with a few thunderstorms will be possible Monday
and Tuesday as another upper level trough approaches the region.
Severe weather is not anticipated with this precipitation.

Spotter activation is not anticipated.

NWS Severe Weather Map , Convective Outlook

7-Day Forecast For LOWER ST. MARTIN Parish, LA
324 PM CST Thu Dec 14 2017

Mostly cloudy. A 20 percent chance of showers after midnight. Lows in the mid 40s. West winds up to 5 mph shifting to the north after midnight.

Cooler, cloudy. Chance of showers in the morning, then slight chance of showers in the afternoon. Highs in the lower 50s. North winds 5 to 10 mph. Chance of showers 30 percent.

Mostly cloudy. Lows in the upper 30s. Northeast winds 5 to 10 mph.

Mostly cloudy. Highs around 60. East winds 5 to 10 mph.

Warmer. Mostly cloudy with a 20 percent chance of showers and thunderstorms. Lows in the mid 50s. Southeast winds 10 to 15 mph.

Warmer. Showers and thunderstorms. Highs in the mid 70s. Chance of precipitation 90 percent.

Showers and thunderstorms likely. Lows in the lower 60s. Chance of precipitation 70 percent.

Showers and thunderstorms likely. Highs in the lower 70s. Chance of precipitation 70 percent.

Showers and thunderstorms likely. Lows in the upper 50s. Chance of precipitation 60 percent.

Partly sunny with a 40 percent chance of showers. Highs around 70.

Partly cloudy with a 20 percent chance of showers. Lows in the lower 50s.

Mostly sunny with a 20 percent chance of showers. Highs in the mid 60s.

Partly cloudy with a 20 percent chance of showers. Lows in the lower 50s.

Mostly sunny with a 20 percent chance of showers. Highs in the lower 70s.

12-48 Hr Surface Forecast Maps, TWC 4-Panel Surface Forecast, Fire Danger, Day 1 Precip, Day 2 Precip, Days 1-5 Precip, Severe Weather Pot.-Day 1, Day 2

LOWER ST. MARTIN County, Louisiana Agriculture, Lawn & Garden Weather Advisory

Current Weather Advisory is NOT available

Ag. Weather Forecast Parameter Maps:Spraying Conditions , Dewpoint Temperatures, Livestock Heat Stress

Medium & Long Range Outlook For Louisiana

                 6 TO 10 DAY  8 TO 14 DAY   30 DAY    90 DAY 
                   DEC 20-24    DEC 22-28    DEC       DEC-FEB                      
                 -----------  -----------  --------  ---------
   Temperature:      Above       Normal      Above      Above                      
 Precipitation:      Above        Above      Below      Below                      

....  Medium and long range outlooks provided by NCEP/K. Thomas Priddy
5 Day Rainfall Forecast, 6 to 10 Day , 8 to 14 Day , Text, 30-Day Outook, 90-Day Outook, 120-Day Outlook
Almanac Information

Friday December 15, 2017 the 349th Day of Year

Declination -23.310000
Distance 0.999725 AU
Rise 08:01 EST Set 18:06 EST
Transit Meridian 13:03 EST
Civil Twilight Begins 07:35 EST Ends 18:32 EST

Calculations made for central point in the state.
Time in ET -- and will vary due to location and
elevation -- Priddy

Historical Weather And Climate Facts For Today

The first of triple storms hit Massachusetts Bay. The storm produced whole
gales, and more than 20 inches of snow in interior New England. There was
great loss of life at Gloucester MA. (David Ludlum)
An intense cold front swept across the eastern U.S. The cold front produced
heavy rain in Louisiana, and heavy snow in the northeastern U.S. (David
A record December snowstorm buried Buffalo NY under 36.6 inches of snow,
with unofficial totals south of the city ranging up to 70 inches. Travel
was brought to a halt by the storm. (14th-17th) (The Weather Channel)
A major winter storm hit the Great Lakes Region, intensifying explosively
as it crossed northern Illinois. High winds and heavy snow created blizzard
conditions in southeastern Wisconsin. Winds gusted to 73 mph, and snowfall
totals ranged up to 17 inches at LaFarge. The barometric pressure at
Chicago IL dropped three quarters of an inch in six hours to 28.96 inches,
a record low reading for December. Up to a foot of snow blanketed northern
Illinois, and winds in the Chicago area gusted to 75 mph. O'Hare Airport in
Chicago was closed for several hours, for only the fourth time in twenty
years. High winds derailed train cars at Avon IN. Light winds and partly
sunny skies were reported near the center of the storm, a feature typical
of tropical storms. (The National Weather Summary) (Storm Data)
High pressure in the Pacific Northwest and low pressure in the southwestern
U.S. combined to produced high winds from Utah to California. Winds gusting
to 70 mph in the San Francisco area left nearly 300,000 residents without
electricity. Winds in Utah gusted to 105 mph at Centerville. (The National
Weather Summary) (Storm Data)
A couple of low pressure systems spread heavy snow across the northeastern
U.S. Up to two feet of snow was reported along Lake Erie in northeastern
Ohio, and up to ten inches was reported in Connecticut. Heavy snow squalls
developed over Michigan for the third day in a row. Three Oaks MI reported
25 inches of snow in two days. Twenty-six cities in the north central U.S.
reported record low temperatures for the date. The low of 10 degrees below
zero at Wichita KS was a December record for that location. (The National
Weather Summary) (Storm Data)

Ag Weather Center, Department of Biosystems & Agricultural Engineering, University of Kentucky