St. Helena Parish Weather and Climate Synopsis



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Medium & Long Range Outlook

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US Weekly Rainfall Departure		US Weekly Temperature Departure

Also see:
Current Soil Moisture Map All NWS Radars NWS Watch/Warning Maps UKAWC Regional Degree Day Maps 7-Day Dep. from Normal Rainfall Map 7-Day Dep. from Normal Temp. Map	Desktop Severe Weather Info US Weather at a Glance Southern Regional Climate Center State Crop/Weather Reports Crop Moisture Index (JAWF) Palmer Drought Index(NOAA) Louisiana State Climatology Office

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


National Weather Service Shreveport LA
1244 PM CDT Fri Apr 19 2024

...New AVIATION...

.UPDATE...
Issued at 1048 AM CDT Fri Apr 19 2024

Very diffuse frontal boundary late this morning is slowly
backdooring itself southward across Northern Louisiana and Deep
East Texas attm. Latest progs confirm that this boundary will
continue its slow southward drift through the day and may be a sfc
trigger for isolated showers/storms across our far southern zones
later today. Further north, going to hold onto slight chance pops
as well as latest CAMS and HRRR suggests that we could see some 
post frontal development and this is certainly possible given the 
fact that the 850mb boundary remains north of our region attm. All
this to say no changes to the pop forecast for the remainder of 
the day. 

Did however raise temps slightly across the I-20 Corridor of N LA
as 15z temps were within a couple degrees of forecast highs even
through the frontal boundary drifting southward should slow the 
warming trend. All other areas are in the ballpark so no
additional changes were necessary. 

13

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

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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 1200pm CDT, Friday April 19, 2024

Across Louisiana...temperatures are near 82 degrees south. Current sky condition is partly sunny south. In the south, relative humidity is near 69%, and the dew point is near 71 degrees. Winds are unavailable north. Winds are unavailable central. Winds are coming from the southwest at 3 mph in the south, where conditions are favorable for spraying. Based on current available observations, the highest temperature is 82 degrees at Slidell, N.O. INTL ARPT, and Baton Rouge. The lowest temperature is 82 degrees at Slidell, N.O. INTL ARPT, 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
Hazardous report currently not available
NWS Severe Weather Map , Convective Outlook

7-Day Forecast For ST. HELENA Parish, LA
420 AM CDT Fri Apr 19 2024 TODAY
Patchy fog this morning. Mostly sunny. Highs in the upper 80s. Southwest winds around 5 mph.
TONIGHT
Partly cloudy in the evening, then becoming mostly cloudy. Patchy fog after midnight. Lows in the upper 60s. South winds around 5 mph.
SATURDAY
Mostly cloudy. Patchy fog in the morning. A chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the lower 80s. Northeast winds around 5 mph. Chance of rain 40 percent.
SATURDAY NIGHT
Mostly cloudy with a slight chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Cooler with lows in the upper 50s. Northeast winds 5 to 10 mph. Chance of rain 70 percent.
SUNDAY
Showers likely, mainly in the morning. Much cooler with highs in the mid 60s. North winds 5 to 10 mph. Chance of rain 70 percent.
SUNDAY NIGHT
Partly cloudy with a slight chance of showers in the evening, then mostly clear after midnight. Cooler with lows in the upper 40s. Chance of rain 20 percent.
MONDAY THROUGH TUESDAY
Mostly clear. Highs in the upper 70s. Lows in the upper 40s.
TUESDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 50s.
WEDNESDAY
Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 20 percent.
WEDNESDAY NIGHT AND THURSDAY
Partly cloudy. Lows in the upper 50s. Highs in the mid 80s.
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
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 APR 24-28 APR 26-MAY 2 JUN JUN-AUG ----------- ----------- -------- --------- Temperature: Precipitation: .... 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 April 19, 2024 the 110th Day of Year --------------------------------------------------- SUN Declination 11.710000 Distance 0.999719 AU Rise 07:34 EDT Set 20:41 EDT Transit Meridian 14:06 EDT Civil Twilight Begins 07:09 EDT Ends 21:05 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

APRIL 19TH HISTORIC WEATHER EVENTS ...1775... The first engagement of the Revolutionary War took place under clear crisp weather at Lexington-Concord. (Sandra and TI Richard Sanders - 1987) ...1941... The temperature at Sodus NY soared to 95 degrees. The next day Albany NY reported a record for April of 93 degrees. (The Weather Channel) ...1973... Glenrock WY received 41 inches of snow in just 24 hours, and a storm total of 58 inches, to establish two state records. (18th-20th) (David Ludlum) (The Weather Channel) ...1976... The northeastern U.S. was in the midst of an early season heat wave, and the Boston Marathon took place in 90 degree heat. At Providence RI the mercury hit 98 degrees. (David Ludlum)

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