817
FXUS63 KGID 172027
AFDGID
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HASTINGS NE
227 PM CST SUN NOV 17 2024
KEY MESSAGES
- 80-100% CHANCE OF RAIN MONDAY WITH AMOUNTS RANGING BETWEEN
0.5- 1.5" AND LOCALLY HIGHER AMOUNTS (2"+) IN A FEW SOUTH AND
EAST SPOTS CLOSER TO THE SYSTEM CENTER.
- RAIN CHANCES START MAINLY 3-7AM FOR AREAS SOUTH OF THE STATE BORDER
AND 6-10AM NORTH OF THE BORDER WITH A BULK OF PRECIPITATION
FALLING BEFORE 1-4PM AS THE WIDESPREAD UNIFORM SHOWERS SLOWLY
TRANSITION TO A MORE SCATTERED COVERAGE PATTERN ON THE SYSTEMS
BACKSIDE.
- COLDER TEMPERATURES (40S TO LOWER 50S) RETAIN THROUGH THE REST
OF THE WEEK FROM AN ESTABLISHED COLD AIR ADVECTION BEHIND THE
SYSTEM.
- STRONG AND GUSTY NORTHWEST WINDS 15-25 MPH GUSTING UP TO 35
MPH TUESDAY AND 20-35 MPH GUSTING UP TO 45 MPH WEDNESDAY.
DISCUSSION
ISSUED AT 225 PM CST SUN NOV 17 2024
TONIGHT...
A RELATIVELY QUIET EVENING TONIGHT AHEAD OF AN ANTICIPATED MID-
LATITUDE SYSTEM ON TRACK TO REACH THE REGION MONDAY. TEMPERATURES
ARE ON PACE TO PEAK IN THE MID TO UPPER 50S TODAY, LIKELY THE
WARMEST DAY IN THE NEXT WEEK. LOWS WILL RANGE TONIGHT FROM THE LOWER
30S IN NORTHWEST PORTIONS UP THROUGH THE LOW TO MID 40S IN SOUTHEAST
PORTIONS OF THE AREA. WINDS STARTING SOUTH WILL SWIVEL EAST AND THEN
NORTH BY MORNING AHEAD OF THE APPROACHING MID-LATITUDE CYCLONE.
THIS SYSTEM, CURRENTLY MATURING UNDER THE DOWNSTREAM SIDE OF A
WESTERN U.S. TROUGH ACROSS THE DESERT SOUTHWEST, IS ON ITS JOURNEY
TOWARDS SOUTHEAST NEBRASKA. STRONG SOUTHWESTERLY UPPER LEVEL JET
WINDS MIXED WITH A LIFTING TROUGH WILL SLINGSHOT THE SYSTEM
NORTHEAST OVERNIGHT TOWARDS OUR REGION WITH PRECIPITATION CHANCES
STARTING IN THE EARLY MORNING HOURS FOR NORTH CENTRAL KANSAS AND
EVENTUALLY TO ALL PARTS OF THE AREA.
MONDAY...
WIDESPREAD PRECIPITATION CHANCES (80-100%) WILL BE POSSIBLE AS EARLY
AS 3-7AM FOR AREAS SOUTH OF STATE BORDER AND BETWEEN 6-10AM FOR
AREAS NORTH OF THE BORDER. THE GREATEST CHANCES WILL GENERALLY LIE
EAST WHERE THE SYSTEM CENTER IS EXPECTED TO CROSS. OVERALL, A FAIRLY
CONSISTENT 12 TO 18 HOUR WINDOW OF UNIFORM RAIN SHOWERS WILL BE
POSSIBLE WITH THE BULK OF THE PRECIPITATION FALLING BEFORE THE 1-4PM
TIMEFRAME WHEN THE RAIN COVERAGE PATTERN IS EXPECTED TO BE AT ITS
GREATEST EXTENT. THE COVERAGE THEREAFTER WILL GRADUALLY BECOME MORE
SCATTERED ON THE BACKSIDE OF THE SYSTEM.
PLENTY OF MOISTURE IS ANTICIPATED TO CATCH A RIDE UP THE WARM SECTOR
SIDE OF THE SYSTEM, FEEDING IN RICH GULF BASED MOISTURE INTO THE
CYCLONE. PWAT VALUES RANGING BETWEEN 1.0-1.5 HIGHLIGHT THE WELL
ABOVE AVERAGE MOISTURE CONTENT EXPECTED TO BE AVAILABLE FOR NOVEMBER
STANDARDS. DESPITE THE EXCESSIVE MOISTURE, THE QUICK PACE OF THE
SYSTEM GENERALLY WILL LIMIT RAINFALL AMOUNTS TO BETWEEN 0.5 TO 1.5
FOR A MAJORITY OF THE AREA WITH POTENTIALLY HIGHER AMOUNT (2"+) FOR
A FEW SOUTHEASTERN SPOTS FAVORED BY THE SWATH OF THE RAIN BANDS
CLOSEST TO THE SYSTEM CENTER. IN ALL THE COVERAGE PATTERN WILL
NATURALLY CREATE A SHARP GRADIENT DROP IN PRECIPITATION AMOUNTS
FURTHER AWAY FROM THE CENTER TOWARDS THE NORTH AND WEST PORTIONS OF
THE AREA.
THOUGH AN ISOLATED RUMBLE OR TWO OF THUNDER IS POSSIBLE, THE SYSTEM
SHOULD REMAIN MAJORLY RAIN SHOWERS. THE ABOVE FREEZING LOW-LEVEL
THERMAL ENVIRONMENT WILL KEEP ANY FROZEN PRECIP TYPE OUT OF THE
DISCUSSION FOR THIS EVENT.
TUESDAY & WEDNESDAY....
MONDAY NIGHT, THE EXITING SYSTEM TIED TO THE LIFTING UPPER LEVEL
TROUGH WILL BE EXPECTED TO MERGE WITH AN ONCOMING SECONDARY TROUGH
MOVING THROUGH THE NORTHERN ROCKIES. THIS MERGING OF THE UPPER LEVEL
FLOW WILL WIDEN THE EXTENT OF THE NOW NORTHERN PLAINS LOW PRESSURE
CENTER, TRAPPING COLD AIR UNDERNEATH IN THE PROCESS. NORTHWEST
ORIENTED SURFACE WINDS WILL POOL IN COOLER TEMPERATURES OVER THE
NEXT COUPLE DAYS, LIMITING HIGHS TO THE 40S AND LOWER 50S FOR THE
REMAINDER OF THE WEEK. THE COLDEST DAY OF THE WEEK WILL LIKELY FALL
WEDNESDAY AS REGIONAL HIGHS WILL LIKELY NOT BE ABLE TO ESCAPE THE
40S.
OTHER THAN A FEW CLOUDS MIDWEEK WITH LIMITED POPS (<15%), WINDS WILL
TAKE PRECEDENT. WINDS TUESDAY OUT OF THE NORTHWEST WILL RANGE 15-25
MPH WITH GUSTS AS HIGH AS 35 MPH AND BETWEEN 20-35 MPH WEDNESDAY
WITH GUSTS UP TO 45 MPH. THE GUSTIEST OF WINDS WILL FALL MAINLY
NORTH OF INTERSTATE 80.
THURSDAY AND BEYOND...
A TRANSITION TO A RIDGING PATTERN LATER IN THE WEEK WILL SUPPRESS
PRECIPITATION CHANCES AS WELL AS LAY THE SCENE FOR THE CONTINUATION
OF NEAR SEASONAL TEMPERATURES (40S TO LOW 50S) WITH OVERNIGHT LOWS
AS LOW AS THE LOWER 20S TOWARDS THE END OF THE WEEK. A SLIVER OF
HIGH PRESSURE WORKING ITSELF INTO THE CENTRAL PLAINS WILL CALM THE
WINDS DOWN TO BECOME MORE LIGHT AND VARIABLE. UNCERTAINTY LIES WITH
WHEN THE NEXT TRUE SYSTEM WILL TAKE PLACE AS ONLY A WEAK SIGNAL LIES
IN SOME LONG RANGE DETERMINISTIC GUIDANCE FOR EARLY NEXT WEEK. THE
JET STREAM LOOKS TO TREND TOWARDS ZONAL FLOW, A RELATIVELY MORE
STABLE PATTERN. THE GUESS OF WHEN THE FIRST SNOWFALL FOR THE SEASON
REMAINS A MYSTERY AT THIS TIME, THOUGH TEMPERATURES CONTINUE TO
TREND MORE FAVORABLE.
AVIATION /18Z TAFS THROUGH 18Z MONDAY/
ISSUED AT 1114 AM CST SUN NOV 17 2024
FOR KGRI/KEAR AIRPORTS:
VFR CONDITIONS EXPECTED TO LAST AT LEAST OVER THE NEXT 18 HOURS
(UNTIL MORNING). MINIMAL CLOUD CLOVER THROUGH THE REST OF THE
DAY TODAY WITH BUILDING COVERAGE OVERNIGHT. AFTER 12Z, THERE IS
80% CHANCE FOR MVFR CONDITIONS, 70% FOR IFR CONDITIONS & 20%
LIFR CONDITIONS AS A SYSTEM APPROACHES. RAIN COULD START AS
EARLY AS 12Z (40% CHANCE) WITH A 80% CHANCE OF RAIN BY 18Z.
WINDS TODAY WILL STAY LIGHT AND OUT OF THE SOUTH, TURNING EAST
AND THEN NORTHEAST OVERNIGHT. NORTH WINDS WILL PICK UP STARTING
TOMORROW MORNING.
GID WATCHES/WARNINGS/ADVISORIES
NE...NONE.
KS...NONE.
DISCUSSION...STUMP
AVIATION...STUMP
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