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St. Thammany Parish, LA Weather and Climate Synopsis

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36 Hr. Forecast Map
All Radar images NOAA/UKAWC
Satellite images from NOAA

Weather Summary Hourly Observations Nowcast Agricultural Weather Outlook
7 Day Forecast Medium & Long Range Outlook Almanac Historical Facts





US Weekly Rainfall Departure



US Weekly Temperature Departure
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A joint service of the UK Ag Weather Center and the National Weather Service.


National Weather Service Shreveport LA
630 PM CDT Thu Apr 18 2024

...New AVIATION...

.UPDATE...
Issued at 354 PM CDT Thu Apr 18 2024

Zone update just sent to account for SVR Watch #126 that is in
effect through 04Z this evening for McCurtain County OK and the
Nrn sections of SW AR. This threat remains conditional and
primarily frontal driven within the very moist and unstable air
mass in place, and given the lack of strong overall forcing 
aloft, is expected to diminish later this evening with reduced 
heating/instability. 

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. THAMMANY County

SWR not available
Current Temperatures, Dewpoint, RH, Wind, Surface 4-Panel
Current Agricultural Weather Conditions in Louisiana
Based on observations at 700pm CDT, Thursday April 18, 2024

Across Louisiana...temperatures are near 79 degrees south. Current sky condition is mostly cloudy south. In the south, relative humidity is near 79%, and the dew point is near 72 degrees. Winds are unavailable north. Winds are unavailable central. Winds are coming from the southeast at 7 mph in the south, where conditions are favorable for spraying. Based on current available observations, the highest temperature is 81 degrees at New Orleans Lakefront and Baton Rouge. The lowest temperature is 79 degrees at Slidell and N.O. INTL ARPT.


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. THAMMANY County
Hazardous report currently not available
NWS Severe Weather Map , Convective Outlook

Current FORECAST not available 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. THAMMANY 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

Thursday April 18, 2024 the 109th Day of Year

---------------------------------------------------
SUN
Declination 11.360000
Distance 0.999719 AU
Rise 07:35 EDT Set 20:40 EDT
Transit Meridian 14:07 EDT
Civil Twilight Begins 07:11 EDT Ends 21:04 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 18TH
HISTORIC WEATHER EVENTS
...1880...
More than two dozen tornadoes were reported from Kansas and Arkansas to
Wisconsin and Michigan. More than 100 persons were killed, including 65
persons at Marshfield MO. (David Ludlum)
...1906...
A severe earthquake shook San Francisco, and unusual easterly winds spread
fires destroying the city. (David Ludlum)
...1944...
California experienced its worst hailstorm of record. Damage mounted to two
million dollars as two consecutive storms devastated the Sacramento Valley
destroying the fruit crop. (The Weather Channel)
...1957...
A dust devil near Dracut MA lifted a small child three feet into the air,
and rolled two other children on the ground. Fortunately none of the three
were hurt. The dust devil was accompanied by a loud whistling sound as it
moved westward. (The Weather Channel)
...1970...
Rapid City SD received a record 22 inches of snow in 24 hours. (17th-18th)
(The Weather Channel)


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