A joint service of the UK Ag Weather Center and the National Weather Service.
National Weather Service Shreveport LA 632 PM CDT Fri Jul 20 2018 .AVIATION... VFR conditions will continue through the 21/00Z TAF period. Areas of thin cirrus will diminish this evening, but increase late tonight from the NNW from sct convection that develops over SE KS/NE OK/Nrn and Cntrl AR around the stout Srn Plains/Lower MS Valley upper ridge. Some AC cigs will be possible as well over portions of SW AR/N LA near and just prior to 12Z Saturday, before these AC and cirrus cigs eventually scatter out by midday and into the afternoon. S winds 5-8kts tonight will become WSW around 10kts after 15Z Saturday, near and ahead of a weak sfc front that will sink S into extreme NE TX to along the AR/LA border by mid to late afternoon. /15/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 ST. HELENA County
SWR not available
Current Temperatures, Dewpoint, RH, Wind, Surface 4-Panel
Current Agricultural Weather Conditions in Louisiana
Based on observations at 700pm CDT, Friday July 20, 2018
Across Louisiana...temperatures are near 92 degrees south. Current sky condition is fair south. In the south, relative humidity is near 63%, and the dew point is near 78 degrees. The heat index is near 107 degrees south. The livestock heat stress category is unavailable north, unavailable central, and emergency south. Winds are unavailable north. Winds are unavailable central. Winds are coming from the southwest at 6 mph in the south, where conditions are favorable for spraying. Based on current available observations, the highest temperature is 92 degrees at New Orleans Lakefront and N.O. INTL ARPT. The lowest temperature is 91 degrees at Slidell and Baton Rouge.
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 ST. HELENA County, LA
425 PM CDT Fri Jul 20 2018 DAY ONE Rest of this afternoon and tonight Heat index readings of 105 to 110 degrees are expected across the region for the rest of this afternoon. A heat advisory is in effect for all of southern Mississippi and all of southeast Louisiana excluding the immediate coast through tonight. Isolated 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 have been issued for all of southern Mississippi and all of southeast Louisiana excluding the immediate coast Saturday and Sunday. 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.
7-Day Forecast For ST. HELENA Parish, LA
344 PM CDT Fri Jul 20 2018
TONIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY
ST. HELENA 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 26-30 JUL 28-AUG 3 JUL JUL-SEP ----------- ----------- -------- --------- Temperature: Above Above 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