US Weekly Rainfall Departure		US Weekly Temperature Departure

447 PM CST Wed Jan 15 2025

...New DISCUSSION...

.DISCUSSION...
Issued at 446 PM CST Wed Jan 15 2025

An arctic air outbreak will bring dangerously cold air to the 
entire forecast area next week, and the threat for a winter 
weather event has increased as well.

Tonight through Friday: Progressive westerly flow aloft will
maintain a dry continental airmass over the forecast area as we go
through the remainder of the work week. A quick moving shortwave
trough is bringing very light rain just to our south today and a
few sprinkles could fall over the lower Pine Belt region into the
evening, but otherwise, expect seasonable temperatures with cold 
nights and cool days continuing.

Friday night through Saturday: A significant weather pattern 
change will begin to take shape as we go into the weekend. Very 
cold arctic air building at high latitudes will begin to surge 
southward as a strong anomalous ridge builds over the East 
Pacific/West Coast region. As this happens, a shortwave trough 
will zip across the lower Mississippi Valley region and bring a 
round of showers to mainly locations along and east of the I-55
corridor. While lift will be strong with this system resulting in
locally heavy downpours, the fast system speed will limit 
moisture return turn and the risk for severe weather.

Saturday night through next Thursday: Arctic air will begin to 
surge into the forecast area Saturday night, with the coldest air 
expected to arrive Sunday night and persist through the end of the
forecast. A strong pressure gradient will develop behind the 
arctic front, and this will support strong surface winds with 
dangerously low wind chill readings. We continue to message for 
the cold given high confidence in low wind chill readings and cold
daytime readings not expected to rise much if any above freezing 
for at least a couple of days. There is a question concerning how
low the temperatures will get early in the week given the 
potential for a frontal wave with cloud/precip development near 
the Gulf Coast region. Eventually, the deeper arctic air will win 
out however behind any departing systems, and this could result in
colder lows later in the week.

Concerning the winter weather potential: Forecast confidence is 
is increasing regarding the threat for a combination of
snow/ice next week, especially in the Tue-Wed time frame. While 
there is still ensemble spread in the timing/strength of a few 
shortwave troughs that will be moving within the polar stream, 
even the colder/drier (northern stream dominant) solutions point 
to at least light snow impacting the area, and the most bullish 
model solutions with stronger shortwave energy suggest that a more
impactful event could materialize with significant snow/ice 
amounts. 

We are messaging the increasing threat for winter weather to line
up with WPC probs for significant snow/sleet melted QPF of 0.25"+
(greatest roughly along/s of I-20 at this point), and we continue
to stress that just light snow/ice accumulation could cause 
significant travel issues with the degree of cold air that is 
expected. It is possible that significant amounts of freezing rain
could materialize as well, but most guidance solutions point to 
snow/sleet being the dominant precip type. Continue to monitor 
forecast updates concerning the potential scenarios. /EC/

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 TUNICA County
500 PM CST WED JAN 15 2025

GREENVILLE     CLEAR     52  34  50 N5        30.38S                  
OLIVE BRANCH   PTCLDY    45  27  49 NW5       30.37S                  
OXFORD         MOCLDY    50  27  40 CALM      30.39S                  
TUNICA         CLOUDY    44  37  74 NW6       30.40R                  

Current Temperatures, Dewpoint, RH, Wind, Regional Obs, Surface 4-Panel

---

Current Agricultural Weather Conditions in Mississippi
Based on observations at 500pm CST, Wednesday January 15, 2025

Across Mississippi...temperatures are near N/A degrees north, near 57 degrees central, and near 55 degrees south. Current sky conditions are partly cloudy north, mostly cloudy central, and mostly cloudy south. In the north, relative humidity is near N/A%, and the dew point is near N/A degrees. In the central part of the state, relative humidity is near 31%, and the dew point is near 27 degrees. In the south, relative humidity is near 41%, and the dew point is near 32 degrees. Winds are calm north, where conditions are favorable for spraying. Winds are calm central, where conditions are favorable for spraying. Winds are from the southeast at 6 mph south, where conditions are favorable for spraying. The livestock cold stress index is in the no stress category north, no stress category central, and no stress category south. Based on current available observations, the highest temperature is 59 degrees at Vicksburg and Jackson Hawkins Field. The lowest temperature is 51 degrees at Meridian Naval Air Station.

---

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

---

7-Day Forecast For TUNICA County, MS
213 PM CST Wed Jan 15 2025

TONIGHT
Mostly clear. Lows in the lower 30s. West winds around 5 mph.

THURSDAY
Sunny. Highs in the mid 50s. West winds 10 to 15 mph.

THURSDAY NIGHT
Mostly clear. Patchy fog. Cold with lows in the lower 30s. West winds around 5 mph, becoming south after midnight.

FRIDAY
Mostly sunny in the morning, then becoming mostly cloudy. Highs in the upper 50s. South winds 10 to 15 mph with gusts up to 25 mph.

FRIDAY NIGHT
Cloudy. Showers, mainly in the evening. Not as cool. Near steady temperature in the upper 40s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 80 percent.

SATURDAY
Mostly cloudy. A slight chance of showers in the morning. Breezy with highs in the lower 50s. Temperature falling into the mid 40s in the afternoon. Chance of rain 20 percent.

SATURDAY NIGHT
Mostly cloudy. Much colder with lows in the mid 20s.

SUNDAY
Mostly sunny. Much cooler with highs in the lower 30s.

SUNDAY NIGHT
Mostly clear. Cold with lows 15 to 20.

MARTIN LUTHER KING JR DAY
Mostly sunny. Cold with highs in the upper 20s.

MONDAY NIGHT
Mostly cloudy. Cold with lows 15 to 20.

TUESDAY
Partly sunny. Cold with highs in the upper 20s.

TUESDAY NIGHT
Partly cloudy. Cold with lows 15 to 20.

WEDNESDAY
Mostly sunny. Highs in the lower 30s.

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 
                   JAN 21-25    JAN 23-29    JUN       JUN-AUG                      
                 -----------  -----------  --------  ---------
   Temperature:      Below        Below                                            
 Precipitation:      Above        Above                                            

....  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

---

Historical Weather And Climate Facts For Today

JANUARY 15TH
HISTORICAL WEATHER FACTS
...1852...
Between January 15th and February 24th a total of 1378 railroad cars were
drawn by horses across the frozen Susquehanna River to engines waiting at
Havre De Grace MD. (The Weather Channel)
...1932...
Up to two inches of snow whitened the Los Angeles basin of California. The
Los Angeles Civic Center reported an inch of snow, and even the beaches of
Santa Monica were whitened with snow, in what proved to be a record
snowstorm for Los Angeles. (David Ludlum) (The Weather Channel)
...1952...
A six day snowstorm was in progress in the western U.S. The storm produced
44 inches of snow at Marlette Lake NV, 52 inches at Sun Valley ID, and 149
inches at Tahoe CA, establishing single storm records for each of those
three states. In addition, 24 hour snowfall totals of 22 inches at the
University of Nevada, and 26 inches at Arco ID, established records for
those two states. The streamliner, 'City of San Francisco' was snowbound in
the Sierra Nevada Range, near Donner Summit. (David Ludlum)
...1987...
A powerful storm over the Southern Plateau and the Southern Rockies
produced 24 inches of snow at Colorado Springs CO, including 22 inches in
24 hours, a January record. High winds in the southwestern U.S. gusted to
65 mph in the Yosemite Valley of California. (National Weather Summary)
(Storm Data)
...1988...
A small storm over the Atlantic Ocean produced heavy snow along the coast
of North Carolina. The five inch total at Wilmington NC was their third
highest for any storm in January in 117 years of records. (National Weather
Summary)
...1989...
A storm in the northwestern U.S. produced up to 14 inches of snow in the
Cascade Mountain Range. Light snow in the north central U.S. was just
enough to push the snowfall total for January at Fargo ND past their
previous all-time monthly record of 30.7 inches.
...1990...
While one Pacific storm crossed the Central Rockies, another approached the
west coast. The northern mountains of Utah were buried under 17 to 35
inches of snow while the mountains of southern Utah received another 12 to
16 inches. Eighteen cities in the central U.S. reported record high
temperatures for the date as readings warmed into the 50s and 60s. Wichita
KS reported a record high of 68 degrees. (National Weather Summary) (Storm
Data)

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