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Livingston Parish, LA Weather and Climate Synopsis

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A joint service of the UK Ag Weather Center and the National Weather Service.


National Weather Service Shreveport LA
325 AM CDT Fri Jul 20 2018

.SHORT TERM.../Today through Saturday Night/

Amplified upper ridge impacting much of the wrn half of the CONUS
will continue to exercise its dominance on our region this pd.
Temps should have no problem reaching 100 degrees at most sites
today, with some areas approaching 105 degrees. Despite ample
mixing expected in swly winds this aftn, heat index readings in
excess of 110 degrees are likely at most sites. Thus an Excessive
Heat Warning remains in effect for today through 8 pm. It is 
possible that a few sites will not see 110 degree heat index 
readings due to the aforementioned mixing, but the risk for heat
related illnesses will remain nevertheless, so will keep the WWA
map as is. 

As hot as it will be today, Saturday is likely to be even hotter.
The upper ridge is fcst to continue building ewd through Saturday,
and with very little relief overnight Friday night, temperatures
exceeding 105 degrees appear to be quite reasonable for much of
the wrn half of the CWA. In addition, the approach of a weak 
front from the ne may add some compressional warming to the mix, 
which could impact temperatures even further. Will likely need an 
Excessive Heat Warning for at least some portion of the region for
Saturday /most likely the wrn half of the area/, but will wait to
see how today pans out before making a decision on which areas 
need it. Regardless, a Heat Advisory for any area not qualifying 
for the Warning is a certainty, and the message we want to convey 
is that the risk for heat-related illnesses will be in place for 
all areas. /12/

LONG TERM.../Sunday through Thursday Night/

Near record breaking heat will continue through Sunday and even on 
into Monday as well due to the unrelenting presence of an upper 
level ridge anchored over the south central U.S. For this reason, 
expect at a minimum for heat advisory headlines to be warranted and 
possibly a continuation of the current excessive heat warning today 
going out through Sunday. Triple digit temperatures are expected to 
impact nearly our entire region on Sunday with some areas eclipsing 
105 degrees, mainly over parts of east Texas. Although the ridge is 
expected to begin retrograding slightly westward to begin the new 
work week, triple digit heat will still be around on Monday over a 
good portion of the region with mid to upper 90s across our extreme 
northern and eastern zones farther removed from the retreating ridge 
axis. Although barely worth mentioning due to the ongoing heat wave, 
a weak frontal will ease on through the region Sunday through early 
Monday with the only noticeable change being winds shifting to the 
N/NE. Due to the lack of moisture, no rain is expected to generate 
along this boundary. 

As we shift ahead through the remainder of next week, expect the 
ridge to further retrograde out across the desert SW as a broad 
upper trough deepens over the eastern third of the country. This 
trough looks to remain just far enough east of our region such that 
rain chances will continue to be quite minimal with temperatures 
only easing up slightly down into the mid and upper 90s throughout 
the remainder of the extended period. This will continue to allow 
for significant drying out of soils and further degradation of our 
ongoing drought conditions across the vast majority of our region.  

/19/

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

Click here for UKAWC Point Agricultural, Lawn & Garden Forecast/Outlook in case of corrupt tables.

Regional Hourly Observations For LIVINGSTON County

SWR not available
Current Temperatures, Dewpoint, RH, Wind, Surface 4-Panel
Current Agricultural Weather Conditions in Louisiana
Based on observations at 500am CDT, Friday July 20, 2018

Across Louisiana...temperatures are near 81 degrees north, near 78 degrees central, and near 81 degrees south. Current sky conditions are fair north, fair central, and fair south. In the north, relative humidity is near 82%, and the dew point is near 75 degrees. In the central part of the state, relative humidity is near 92%, and the dew point is near 75 degrees. In the south, relative humidity is near 94%, and the dew point is near 79 degrees. The livestock heat stress category is no stress north, no stress central, and danger south. Winds are coming from the southwest at 5 mph in the north, where conditions are favorable for spraying. Winds are coming from the northwest at 6 mph in the central, where conditions are favorable for spraying. Winds are coming from the west at 8 mph in the south, where conditions are favorable for spraying. Based on current available observations, the highest temperature is 84 degrees at New Orleans Lakefront. The lowest temperature is 76 degrees at Slidell.


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 LIVINGSTON County, LA

428 AM CDT Fri Jul 20 2018

 DAY ONE  Today and Tonight

Heat index readings of 105 to 110 degrees are expected across the
region this afternoon. A heat advisory is in effect for all of
southern Mississippi and all of southeast Louisiana excluding the
immediate coast today. 

Scattered thunderstorms will be possible for areas mainly to the
east of I-55 this afternoon and early evening. Some of the storms
could turn strong and produce frequent lightning strikes, gusty
winds in excess of 30 mph, and locally heavy rainfall of 1 to 2
inches that could lead to ponding of water on low lying and poorly
drained roads. 

 DAYS TWO THROUGH SEVEN  Saturday through Thursday

Heat index readings may approach 110 degrees Saturday through
Monday during the afternoon hours. Heat Advisories are likely to 
be issued each day through Monday due to these hot temperatures.

Scattered thunderstorms will return to the area Tuesday through
Thursday. A few of these storms could turn strong and produce
frequent lightning strikes, gusty winds in excess of 30 mph, and
locally heavy downpours that could lead to ponding of water on low
lying and poorly drained roads. 

 SPOTTER INFORMATION STATEMENT  

Spotter activation is not anticipated.

NWS Severe Weather Map , Convective Outlook


7-Day Forecast For LIVINGSTON Parish, LA
420 AM CDT Fri Jul 20 2018


HEAT ADVISORY IN EFFECT FROM 11 AM THIS MORNING TO 8 PM CDT THIS EVENING

TODAY
Partly cloudy with a 20 percent chance of showers and thunderstorms. Highs in the upper 90s. West winds to 10 mph. Heat index readings around 110 in the afternoon.

TONIGHT
Mostly clear. Lows in the mid 70s. West winds to 5 mph.

SATURDAY
Sunny in the morning then becoming partly cloudy. Highs in the upper 90s. West winds to 10 mph. Heat index readings 108 to 114.

SATURDAY NIGHT
Partly cloudy. Lows in the upper 70s. Southwest winds 5 to 10 mph. Heat index readings 108 to 109 in the evening.

SUNDAY
Partly cloudy. Highs in the upper 90s. West winds 5 to 15 mph. Heat index readings 108 to 114.

SUNDAY NIGHT
Partly cloudy. Lows in the upper 70s.

MONDAY
Partly cloudy with a 20 percent chance of showers and thunderstorms. Highs in the upper 90s.

MONDAY NIGHT
Partly cloudy with a 20 percent chance of showers and thunderstorms. Lows in the mid 70s.

TUESDAY
Partly cloudy with a 20 percent chance of showers and thunderstorms. Highs in the lower 90s.

TUESDAY NIGHT
Partly cloudy with a 20 percent chance of showers and thunderstorms. Lows in the mid 70s.

WEDNESDAY
Partly cloudy with a 30 percent chance of showers and thunderstorms. Highs in the lower 90s.

WEDNESDAY NIGHT
Partly cloudy with a 30 percent chance of showers and thunderstorms. Lows in the mid 70s.

THURSDAY
Mostly cloudy with a 50 percent chance of showers and thunderstorms. Highs in the lower 90s.

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


LIVINGSTON 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

                            LOUISIANA                                                                     
                 ---------------------------------------------
                 6 TO 10 DAY  8 TO 14 DAY   30 DAY    90 DAY 
                   JUL 25-29 JUL 27-AUG 2    JUL       JUL-SEP                      
                 -----------  -----------  --------  ---------
   Temperature:      Below        Below      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 July 20, 2018 the 201th Day of Year

---------------------------------------------------
SUN
Declination 20.470000
Distance 0.999716 AU
Rise 07:17 EDT Set 21:12 EDT
Transit Meridian 14:14 EDT
Civil Twilight Begins 06:50 EDT Ends 21:38 EDT

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

////////////////////////
JULY 20TH...HISTORIC WEATHER EVENTS
...1930...
The temperature at Washington D.C. soared to an all-time record of 106
degrees. The next day Millsboro reached 110 degrees to set a record for the
state of Delaware. July 1930 was one of the hottest and driest summers in
the U.S., particularly in the Missouri Valley where severe drought
conditions developed. Toward the end of the month state records were set
for Kentucky with 114 degrees, and Mississippi with 115 degrees. (David
Ludlum)
...1934...
The temperature at Keokuk IA soared to 118 degrees to establish a state
record. (The Weather Channel)
...1953...
Twenty-two inches of hail reportedly fell northeast of Dickinson ND. (The
Weather Channel)
...1986...
The temperature at Charleston SC hit 104 degrees for the second day in a
row to tie their all-time record high. (The Weather Channel)
...1987...
Thunderstorms produced severe weather across Minnesota, Wisconsin and
Michigan. Thunderstorms produced wind gusts to 87 mph at Mosinee WI, and
strong thunderstorm winds capsized twenty-six boats on Grand Traverse Bay
drowning two women. Thunderstorms produced nine inches of rain at Shakopee
MN, with 7.83 inches reported in six hours at Chaska MN. Thunderstorms in
north central Nebraska produced hail as large as golf balls in southwestern
Cherry County, which accumulated to a depth of 12 inches. (The National
Weather Summary) (Storm Data)
...1988...
The temperature at Redding CA soared to an all-time record high of 118
degrees. Showers and thunderstorms produced much needed rains from New
England to southern Texas. Salem IN was deluged with 7.2 inches of rain
resulting in flash flooding. (The National Weather Summary)
...1989...
Showers and thunderstorms in the Middle Atlantic Coast Region soaked
Wilmington DE with 2.28 inches of rain, pushing their total for the period
May through July past the previous record of 22.43 inches. Heavy rain over
that three month period virtually wiped out a 16.82 inch deficit which had
been building since drought conditions began in 1985. Thunderstorms in
central Indiana deluged Lebanon with 6.50 inches of rain in twelve hours,
and thunderstorms over Florida produced wind gusts to 84 mph at Flagler
Beach. (The National Weather Summary) (Storm Data)

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