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]
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Hourly Observations For CALCASIEU Parish
500 AM CDT FRI JUL 20 2018
SOUTHWEST LOUISIANA CITY SKY/WX TMP DP RH WIND PRES REMARKS LAKE CHARLES FAIR 82 79 90 SW6 29.91S LAFAYETTE FAIR 79 77 94 SW5 29.91F PATTERSON FAIR 78 77 96 SW5 29.93S SALT POINT N/A N/A N/A N/A VRB5 29.90F NEW IBERIA FAIR 77 75 93 CALM 29.93S CHENAULT AIRPK FAIR 81 78 90 W6 29.92S
Current Agricultural Weather Conditions in Louisiana
Based on observations at 400am CDT, Friday July 20, 2018
Across Louisiana...temperatures are near 81 degrees south. Current sky condition is fair south. In the south, relative humidity is near 94%, and the dew point is near 79 degrees. The livestock heat stress category is unavailable north, unavailable central, and danger south. Winds are unavailable north. Winds are unavailable central. 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 74 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 CALCASIEU County, LA
305 PM CDT Thu Jul 19 2018 DAY ONE This Afternoon and Tonight Temperatures across interior Southeast Texas and Central Louisiana will continue warming to the upper 90s this afternoon. Combined with dew points well into the 70s, heat index values will range from 103 to 108 into this evening, and a Heat Advisory is in effect. Tonight, warm temperatures will continue with lows in the upper 70s to near along and north of Interstate 10, with lower 80s along the coastal parishes and counties. DAYS TWO THROUGH SEVEN Friday through Wednesday The heat wave continues Friday through Sunday, with afternoon highs in the mid 90s along the Interstate 10 corridor, and near 100 to lower 100s across inland Southeast Texas and Central Louisiana. Heat indices will range 105 to 112 in the afternoon and continue into the early evening. A Heat Advisory continues for late Friday morning into Friday afternoon. Some relief is possible by Tuesday as an upper low brings increased moisture from the east, with the chance of afternoon showers and thunderstorms by Tuesday and Wednesday afternoons. SPOTTER INFORMATION STATEMENT Spotter activation will not be needed.
7-Day Forecast For CALCASIEU Parish, LA
408 AM CDT Fri Jul 20 2018
TODAY TONIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY
CALCASIEU 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 Priddy5 Day Rainfall Forecast, 6 to 10 Day , 8 to 14 Day , Text, 30-Day Outook, 90-Day Outook, 120-Day Outlook
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