A joint service of the UK Ag Weather Center and the National Weather Service.
422 AM CDT Sat Apr 20 2024
...New DISCUSSION...
.DISCUSSION...
Issued at 421 AM CDT Sat Apr 20 2024
Today and Tonight:
A stationary frontal boundary currently resides along a northeast
to southwest line stretching from just south of Meridian, to near
Brookhaven, to just south of both Concordia and Catahoula
Parishes on Louisiana. Behind this front, northerly winds will
allow for cooler drier air to filter south into the CWA, while
moisture pools ahead of it under southerly surface winds. For
today, a mid/upper level disturbance embedded in zonal flow aloft
will traverse the region along this boundary. This'll result in
widespread showers and scattered thunderstorms developing across
the forecast area through the day. There will be a lull in
activity this evening as the first disturbance exits the region.
However, another disturbance will again track east across the
region late tonight in early Sunday morning. This will yet again
bring widespread showers to the forecast area, as the cold front
finally pushes southeast and out of the CWA.
Although cold advection is occurring in the wake of this boundary,
the process is currently quite slow. With precipitable H2O values
across much of the CWA progged between 1.50-1.75 inches and
convection forecast to move west to east across the CWA, heavy
downpours can be expected with today's activity, and again with
tonight's as the front pushes out of the area. As a result, a
limited threat for flash flooding exists today into tonight. This
will particularly be the case over areas mainly along and north of
the Interstate 20 corridor where widespread heavy rainfall fell late
last week, & again during the middle of this week, & as today and
tonight's convection is progged to train across the same locations.
Here, 1-3 inches of rain will be possible. This could result in
further flash flooding of low-lying and poor drainages areas, as
well as further contribute to ongoing river flooding in the area.
In addition to this limited flash flooding threat, a "Marginal Risk"
for isolated severe storms will exist across the Pine Belt region
this afternoon and early evening. Here, the better combination of
instability, wind shear, and steep mid-level lapse rates will exist.
As a result, isolated severe storms capable of producing damaging
wind gusts and hail up to the size of quarters will be possible from
around 1 PM today through 7 PM this evening.
As far as temperatures are concerned through the period, a decent
spread of temperatures is expected from north to south across the
CWA due to the aforementioned stalled frontal boundary. Look for
highs to range from around 60 across the Delta region, to around 80
across the Pine Belt. Then for tonight, lows will range from the
middle 40s north to middle 50s south. /19/
Sunday through Friday:
The chance for rain will continue into the afternoon Sunday,
clearing from north to south as an upper-level shortwave trough axis
clears the region and drier surface air works into the region with
high pressure. Overnight lows have a chance to radiate a little
cooler with the surface high sliding overhead Sunday night and
Monday night, but at this time think even the cooler locations
should remain too warm for frost. That said, a brief touch of frost
cannot entirely be ruled out in those typically cold drainage
locations in northern Mississippi either night. Otherwise, the rest
of the forecast period will see a warming trend as an upper-level
ridge steadily builds and shifts eastward toward the Mississippi
River Valley by late week. Models begin to diverge with regard to
timing of a shortwave ejecting from the Southwest U.S. later in the
week, but a glancing blow from the wave could bring a chance for
showers and thunderstorms to at least northwestern parts of our
forecast area by the end of the week. /NF/
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 OKTIBBEHA County
500 AM CDT SAT APR 20 2024
GOLDN TRIANGLE CLOUDY 61 60 97 N9 30.09R
IUKA N/A 55 47 74 N13 30.16R HAZE
LOUISVILLE CLOUDY 61 61 100 N6 30.11S
STARKVILLE CLOUDY 61 61 100 NW5 30.08R
TUPELO CLOUDY 60 53 77 N13 30.12R
Current Temperatures,
Dewpoint,
RH,
Wind,
Regional Obs,
Surface 4-Panel
Current Agricultural Weather Conditions in Mississippi
Based on observations at 500am CDT, Saturday April 20, 2024
Across Mississippi...temperatures are near 60 degrees north, near 67 degrees central, and near 74 degrees south. Current sky conditions are cloudy north, cloudy central, and mostly cloudy south. In the north, relative humidity is near 77%, and the dew point is near 53 degrees. In the central part of the state, relative humidity is near 97%, and the dew point is near 66 degrees. In the south, relative humidity is near 87%, and the dew point is near 70 degrees. There is patchy fog central. Winds are from the north at 13 mph north, where conditions are not favorable for spraying due to strong winds. Winds are from the north at 8 mph central, where conditions are favorable for spraying. Winds are calm south, where conditions are favorable for spraying. Based on current available observations, the highest temperature is 74 degrees at Biloxi. The lowest temperature is 60 degrees at Tupelo.
Current NOWCAST not available:
Nowcasts are not issued routinely during fair weather. Only when
precipitation or other significant weather is occuring in this county will these
forecasts be issued. Currently, there is no short term forecast in effect.
US Radar,
All NWS Radars (In near-real time),
Current Livestock Heat Stress Index (LSI),
Current Wind Chill Map
Hazardous Weather Outlook For OKTIBBEHA County
Hazardous report currently not available
NWS Severe Weather Map , Convective Outlook
7-Day Forecast For OKTIBBEHA County, MS
328 AM CDT Sat Apr 20 2024
TODAY
Mostly cloudy. Numerous showers this afternoon. Much
cooler. Near steady temperature in the lower 60s. North winds
5 to 10 mph. Chance of rain 70 percent.
TONIGHT
Cloudy. Scattered showers in the evening, then
widespread showers after midnight. Lows in the mid 40s. North
winds around 5 mph. Gusts up to 20 mph after midnight. Chance of
rain 90 percent.
SUNDAY
Mostly cloudy with numerous showers in the morning,
then mostly sunny in the afternoon. Highs in the lower 60s. North
winds 5 to 10 mph. Chance of rain 70 percent.
SUNDAY NIGHT
Mostly clear. Lows in the lower 40s. North winds
5 to 10 mph.
MONDAY
Sunny. Highs in the upper 60s. North winds 5 to 10 mph.
MONDAY NIGHT AND TUESDAY
Mostly clear. Lows in the lower 40s.
Highs in the mid 70s.
TUESDAY NIGHT
Mostly clear. Not as cool with lows in the lower
50s.
WEDNESDAY THROUGH THURSDAY NIGHT
Partly cloudy. Highs in the
mid 70s. Lows in the mid 50s.
FRIDAY
Partly sunny. Highs in the lower 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
Medium & Long Range Outlook For Mississippi
MISSISSIPPI
---------------------------------------------
6 TO 10 DAY 8 TO 14 DAY 30 DAY 90 DAY
APR 25-29 APR 27-MAY 3 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
Saturday April 20, 2024 the 111th Day of Year
---------------------------------------------------
SUN
Declination 12.040000
Distance 0.999719 AU
Rise 07:25 EDT Set 20:35 EDT
Transit Meridian 13:59 EDT
Civil Twilight Begins 07:00 EDT Ends 20:59 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 20TH
HISTORIC WEATHER EVENTS
...1901...
A spring storm produced unusally heavy snow in northeast Ohio. Warren
received 35.5 inches in thirty-six hours, and 28 inches fell at Green Hill.
Akron OH established April records of 15.6 inches in 24 hours, and 26.6
inches for the month. Pittsburgh PA established April records of 12.7
inches in 24 hours, and 13.5 inches for the month. (David Ludlum) (The
Weather Channel)
...1920...
Tornadoes in Mississippi and Alabama killed 219 persons. (David Ludlum)
...2002...
An unseasonably warm and moist air mass had settled across eastern Kentucky
leading to record breaking temperatures at the Jackson Weather Office and the
London Corbin Airport between the 16th and 21st of April. Jackson saw several
days in a row with record high temperatures as well as maximum low records. On
the 19th the mercury soared to a record high of 89 degrees at Jackson and a
record tying 87 degrees at London. The low temperature at Jackson was a balmy 69
degrees good enough for a daily as well as a monthly maximum low temperature
record. (NWS Jackson)
Ag Weather Center, Department of Biosystems & Agricultural Engineering, University of Kentucky
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