FXUS63 KOAX 300754
AFDOAX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
254 AM CDT SAT JUL 30 2011
.DISCUSSION...
CONCERN TODAY IS SMALL PRECIP CHANCES IN EXTREME SOUTHEASTERN
NEBRASKA AND SOUTHWEST IOWA...AS THE AREA REMAINS WITHIN THE RIGHT
ENTRANCE REGION AND MOIST AXIS THAT REMAINS TRAPPED IN AN GENERAL
WEAK ZONAL RIDGE. ONE MORE VERY SUBTLE IMPULSE AS NOTED ON RECENT
WATER VAPOR IMAGERY COMING OUT OF SOUTHWEST NEBRASKA MAY STILL
TRIGGER ISOLATED SHOWERS AND THUNDERSTORMS THIS MORNING...BUT
MOST LIKELY ENDING BY THIS AFTERNOON. IN THE MEANTIME...AREAS OF
DENSE FOG HAS DEVELOPED IN THE PLATTE RIVER VALLEY...WHICH
ESSENTIALLY IS WITHIN THE RIDGE AXIS EARLY THIS MORNING. ISSUED A
RELATIVELY SMALL AREAL ADVISORY FOR NOW...AND WILL SEE IF THE
DENSE FOG CONTINUES TO EXPAND INTO NORTHEAST NEBRASKA AS THE
LATEST HRRR/RUC MODELS WOULD SUGGEST.
OTHERWISE...ATTENTION FOR SUNDAY THROUGH TUESDAY SHIFTS TO
BUILDING HEAT AS THE RIDGE REESTABLISHES ITSELF ACROSS THE PLAINS.
TEMPERATURES SHOULD WARM INTO THE LOWER TO MID 90S FOR SUNDAY...AND
95 TO 100 ON MONDAY...WITH GENERALLY DRY CONDITIONS EXPECTED. HEAT
INDEX VALUES WILL LIKELY BE AROUND 105 DURING PEAK HEATING ON
SUNDAY...AND AROUND 110 ON MONDAY...THEN AROUND 105 AGAIN ON
TUESDAY ALONG AND SOUTH OF INTERSTATE 80.
THERE IS A COLD FRONT THAT BEGINS TO ENTER THE REGION LATE
TUESDAY NIGHT...WHICH WILL BRING NUMEROUS THUNDERSTORM CHANCES
BACK TO THE AREA THROUGH THE REMAINDER OF THE WEEK...BUT ALSO WILL
PUSH THE EXCESSIVE HEAT FURTHER SOUTH AS WELL.
DEWALD
&&
.AVIATION...
TAF SITES KOFK/KOMA/KLNK
06Z TAFS
LIGHT WINDS AND AMPLE BNDRY LYR MOISTURE ALLOWING MVFR/IFR
CONDITIONS TO GRADUALLY DEVELOP OVER PARTS OF ERN NEB THIS MORNING.
BTWN 10Z-14Z...EXPECT CONDITIONS DETERIORATING TO IFR AT KOFK AND
KOMA. AT KLNK...MID LEVEL CIGS OVER SERN NEB WILL PROBABLY INHIBIT
CONDITIONS FROM GOING BELOW MVFR. OTHERWISE EXPECT VFR CONDITIONS TO
PREVAIL THE REST OF THE FCST PD.
DD
&&
.OAX WATCHES/WARNINGS/ADVISORIES...
NE...DENSE FOG ADVISORY UNTIL 9 AM CDT THIS MORNING FOR NEZ030-042-
043-050-065-078.
IA...NONE.
&&
$$