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Washington County, AR Weather and Climate Synopsis

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Weather Summary for Arkansas
National Weather Service Little Rock AR
925 PM CDT Thu Jul 19 2018

Another hot day was seen across the Natural State as quite a few
locations topped 100 degrees with most locations seeing heat index
values well over 100 degrees. This evening a strong line of
showers and thunderstorms moved into northern Arkansas. This line
of storms originated in Kansas and continued to push south through
Missouri before making its way into northern Arkansas before
sunset. This storm produced strong winds and knocked down trees
and power lines across northern portions of the state. This storm
system will continue to weaken through the evening and overnight
hours tonight.

In the coming days, high pressure aloft is forecast to strengthen 
over the region. This will result in diminishing rain chances for 
most areas, along with hotter temperatures. Highs Friday, will 
range from the mid 90s to around 103 degrees. 

Afternoon heat index values will range from 105 to 110 degrees in 
many areas Friday afternoon, with Heat Advisories already posted 
for part of Arkansas. Remember to drink plenty of water, stay in 
an air-conditioned room if possible, stay out of the sun, and 
check up on relatives, neighbors and pets.

 

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Regional Hourly Observations For WASHINGTON County
300 AM CDT FRI JUL 20 2018


NORTHWEST ARKANSAS
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
FAYETTEVILLE   CLOUDY    79  69  71 W3        29.88S                  
FORT SMITH     CLOUDY    80  73  79 NE7       29.84R                  
HARRISON       MOCLDY    69  67  93 SE3       29.89S                  
BENTONVILLE    CLOUDY    78  69  73 S5        29.89S                  
ROGERS         MOCLDY    77  68  73 S7        29.88F                  
SILOAM SPGS    CLOUDY    80  71  74 S3        29.88R                  

Current Temperatures, Dewpoint, RH, Wind, Regional Obs, Surface 4-Panel


Current Agricultural Weather Conditions in Arkansas
Based on observations at 300am CDT, Friday July 20, 2018

Across Arkansas...temperatures are near 68 degrees north, near 82 degrees central, and near 82 degrees south. Current sky conditions are cloudy north, cloudy central, and fair south. In the north, relative humidity is near 100%, and the dew point is near 68 degrees. In the central part of the state, relative humidity is near 96%, and the dew point is near 81 degrees. The heat index is near 95 degrees central. In the south, relative humidity is near 76%, and the dew point is near 74 degrees. The heat index is near 88 degrees south. The livestock heat stress category is no stress north, danger central, and no stress south. Winds are calm north, where conditions are favorable for spraying. Winds are from the southwest at 3 mph central, where conditions are favorable for spraying. Winds are from the southwest at 6 mph south, where conditions are favorable for spraying. Based on current available observations, the highest temperature is 84 degrees at Hot Springs. The lowest temperature is 68 degrees at Mountain Home.


NOWCAST For WASHINGTON County: 0-6 Hour Forecast
Issued at 106 AM CDT Fri Jul 20 2018

.NOW...
At 106 am...National Weather Service doppler radars indicated 
scattered showers and a few thunderstorms mainly north of 
Interstate 40 in northeast Oklahoma and northwest Arkansas. This 
activity was spreading to the southeast at 40 mph.
Through 3 am...scattered showers and a few thunderstorms will 
continue to spread to the southeast into southeast Oklahoma and 
west central Arkansas. The strongest storms will produce locally 
moderate to heavy rainfall and cloud to ground lightning. 

US Radar, All NWS Radars (In near-real time), Current Livestock Heat Stress Index (LSI), Current Wind Chill Map


Hazardous Weather Outlook For WASHINGTON County,AR

904 PM CDT Thu Jul 19 2018

   EXCESSIVE HEAT AND HUMIDITY CONTINUE FRIDAY  

This Outlook is for Northwest and West Central Arkansas as well as
much of Eastern Oklahoma.

 DAY ONE  Tonight.

SEVERE THUNDERSTORM.
RISK  Limited.
AREA  Far Northeast Oklahoma and Far Northwest Arkansas.
ONSET  Ongoing.

DISCUSSION  
Isolated to scattered thunderstorms may redevelop tonight across 
portions of far northeast Oklahoma  far northwest Arkansas  and 
adjacent portions of Kansas and Missouri. If these storms develop,
they would have a limited potential for damaging winds.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT  
Local Spotter Activation May Be Needed.

 DAYS TWO THROUGH SEVEN  Friday through Wednesday.
FRIDAY AND SATURDAY  Dangerous Heat Potential.
SUNDAY  No Hazards.
MONDAY  Dangerous Heat Potential.
TUESDAY AND WEDNESDAY  No Hazards.

EXTENDED DISCUSSION  
Intense heat and humidity will continue into Friday, with heat
index values above 110 degrees possible for some areas. A weak 
cold front will push through the area by Saturday, bringing 
somewhat cooler conditions, although heat index values will likely
still exceed 105 in some places this weekend into early next 
week.

EMERGENCY MANAGEMENT PLANNING STATEMENT  
An increase in heat related responses is likely through Friday. 
Local heat response plans may experience an uptick in activation 
levels.

weather.gov/tulsa contains additional information.

NWS Severe Weather Map , Convective Outlook


7-Day Forecast For WASHINGTON County, Arkansas
355 AM CDT Fri Jul 20 2018


HEAT ADVISORY IN EFFECT FROM NOON TODAY TO 9 PM CDT THIS EVENING

TODAY
Partly cloudy. Slight chance of showers and thunderstorms early in the morning. Slight chance of showers and thunderstorms in the afternoon. Highs in the upper 90s. Southwest winds 10 to 15 mph. Chance of precipitation 20 percent. Heat index readings 100 to 110.

TONIGHT
Partly cloudy with a 20 percent chance of showers and thunderstorms. Lows in the mid 70s. South winds up to 10 mph in the evening becoming light. Heat index readings 100 to 107 in the evening.

SATURDAY
Mostly sunny. Highs in the lower 90s. North winds up to 10 mph.

SATURDAY NIGHT
Mostly clear. Lows in the upper 60s. Light winds. Gusts up to 15 mph in the evening.

SUNDAY
Mostly sunny. Highs in the lower 90s. Light winds becoming north around 10 mph in the afternoon.

SUNDAY NIGHT
Mostly clear. Lows in the upper 60s.

MONDAY
Mostly sunny. Highs in the upper 80s.

MONDAY NIGHT
Partly cloudy. Lows in the upper 60s.

TUESDAY
Mostly sunny. Highs in the upper 80s.

TUESDAY NIGHT
Mostly clear. Lows in the upper 60s.

WEDNESDAY
Mostly sunny. Highs around 90.

WEDNESDAY NIGHT
Mostly clear. Lows in the upper 60s.

THURSDAY
Mostly sunny. Highs around 90.

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


Medium & Long Range Outlook For Arkansas
                             ARKANSAS                                                                     
                 ---------------------------------------------
                 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:     Normal        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 07:11 EDT Set 21:20 EDT
Transit Meridian 14:15 EDT
Civil Twilight Begins 06:43 EDT Ends 21:47 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