Flash Flood Warning 8, NWS Omaha, NE

000 
WGUS73 KOAX 260622
FFSOAX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
121 AM CDT SAT AUG 26 2006

NEC147-260631-
RICHARDSON NE-
INCLUDING THE CITY OF FALLS CITY
121 AM CDT SAT AUG 26 2006

...THE FLASH FLOOD WARNING WILL EXPIRE AT 130 AM CDT FOR RICHARDSON
COUNTY...

ALTHOUGH THUNDERSTORMS CONTINUE OVER THE COUNTY...THE HEAVIEST 
RAINFALL IS NOW OVER AND THE THREAT OF FLASH FLOODING HAS ENDED. 
ABOUT A QUARTER OF AN INCH OF ADDITIONAL RAINFALL CAN BE EXPECTED 
THROUGH 230 AM.

LAT...LON 4002 9581 3999 9531 4004 9541 4011 9540
      4021 9549 4026 9555 4026 9592

$$

GRIFFIS

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
250 PM CDT FRI AUG 25 2006

.DISCUSSION...
MAIN FORECAST CHALLENGES OVER THE NEXT FEW DAYS WILL AREAL PLACEMENT
OF PRECIPITATION AND TEMPERATURE TRENDS.

IN THE SHORT TERM...OUR RAIN CHANCES WILL BE TIED TO THE NEARLY
STATIONARY FRONT THAT WAS POISED FROM CENTRAL KANSAS NORTHEASTWARD
THROUGH CENTRAL IOWA. EXPECT THIS FRONT TO REMAIN RATHER STAGNANT
ACROSS EASTERN PORTIONS OF KANSAS TONIGHT AND SATURDAY. UPPER LEVEL
IMPULSES WILL RIDE ALONG THE FRONT EJECTING FROM EASTERN COLORADO
AND PROVIDE A CONTINUED CHANCE OF THUNDERSTORMS ALONG AND JUST NORTH
OF THE FRONT. ANOTHER WEAK UPPER IMPULSE WAS MOVING THROUGH WESTERN
NEBRASKA AND WAS GENERATING SOME LIGHT SHOWERS IN THE CENTRAL PART
OF THE STATE...BUT THOSE WON/T AFFECT US TONIGHT. HAVE CONFINED POPS
TO AREAS SOUTH OF I80 THROUGH TOMORROW WITH THE HIGHEST POPS...IN
THE LIKELY CATEGORY...ALONG THE KANSAS AND MISSOURI BORDERS. THERE
COULD BE A FAIRLY TIGHT GRADIENT TO THE NORTHERN EDGE OF THE PRECIP
WITH THE KLNK AND KOMA VICINITIES RIGHT ON THE EDGE.

SHOULD BE PLENTY OF CLOUDS AROUND...ESPECIALLY NEAR THE FRONT...AND
WITH MID TO UPPER CLOUDS STREAMING OVERHEAD FURTHER NORTH. BASED ON
SURFACE TRAJECTORIES...LOWS TONIGHT WILL RANGE FORM THE UPPER 50S IN
NORTHEAST NEBRASKA TO THE UPPER 60S IN SOUTHEAST NEBRASKA...ALSO
WHERE MORE CLOUDS WILL EXIST. HIGHS SATURDAY SHOULD BE HELD A FEW
DEGREES BELOW NORMAL DUE TO CLOUDS AND THERMAL TROUGH ACROSS THE
REGION WITH READINGS IN THE UPPER 70S TO NEAR 80.

PRECIPITATION CHANCES BEGIN TO FADE SATURDAY NIGHT INTO SUNDAY AS
THE STALLED FRONTAL BOUNDARY EDGES FURTHER SOUTH OR BECOMES LESS
DEFINED. HOWEVER...FOCUS SHIFTS TO THE CLOSED UPPER LOW THAT IS
CURRENTLY ACROSS THE WESTERN UNITED STATED. THERE IS ACTUALLY VERY
GOOD MODEL AGREEMENT WITH THE EASTWARD PROGRESSION OF THE UPPER
LOW...MOVING THROUGH THE CENTRAL ROCKIES AND ONTO THE PLAINS ON
MONDAY. FEEL THAT SCATTERED SHOWERS WILL MOVE BACK INTO AREA SUNDAY
NIGHT AND WILL CONTINU MONDAY. THE INSTABILITY SEEMS LIMITED WITH
THIS NEXT SYSTEM WITH NO REAL SURFACE FRONTS TO WORK WITH THUS JUST
MENTIONED SHOWERS WITH ISOLATED THUNDERSTORMS. NEVERTHELESS...IT
SHOULD CONTRIBUTE TO COOLER CONDITIONS WITH CONSIDERABLE CLOUDINESS
AROUND ON MONDAY WITH HIGHS STILL IN THE UPPER 70S. THERE IS SOME
QUESTION IF THE PRECIP MIGHT LINGER INTO MONDAY NIGHT AS MODELS TEND
TO EJECT THESE CLOSED LOWS TOO FAR EAST TOO FAST.

IN THE EXTENDED FORECAST PERIOD...WILL KEEP THE FORECAST DRY TUESDAY
THROUGH FRIDAY AS THE UPPER RIDGE BUILDS BACK ACROSS THE AREA BUT
WOULD NOT BE SURPRISED IF FUTURE MODEL RUNS LINGER THE PRECIP EVEN
INTO TUESDAY. SLOW WARMING TREND THE PERIOD AS HIGHS WARM FROM THE
LOWER 80S BACK INTO THE MID TO UPPER 80S BY FRIDAY.

&&

.OAX WATCHES/WARNINGS/ADVISORIES...
NE...NONE.
IA...NONE.
&&

DEWALD

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
1132 PM CDT FRI AUG 25 2006

IAZ043-055-056-069-NEZ011-012-015>018-030>034-042>045-050>053-261100-
ANTELOPE-BOONE-BURT-BUTLER-CEDAR-COLFAX-CUMING-DODGE-DOUGLAS-
HARRISON IA-KNOX-MADISON-MONONA IA-PIERCE-PLATTE-POTTAWATTAMIE IA-
SARPY-SAUNDERS-SHELBY IA-STANTON-THURSTON-WASHINGTON-WAYNE-
1132 PM CDT FRI AUG 25 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PARTS OF EASTERN NEBRASKA AND
SOUTHWEST IOWA.

.DAY ONE...TONIGHT AND SATURDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

ISOLATED THUNDERSTORMS ARE POSSIBLE SUNDAY AND SUNDAY NIGHT.  NO
SEVERE STORMS ARE EXPECTED AS INSTABILITY WILL BE LIMITED.

.SPOTTER INFORMATION STATEMENT...

STORM SPOTTER ACTIVATION WILL NOT BE NEEDED TONIGHT OR SATURDAY.

IAZ079-080-090-091-NEZ065>068-078-088>093-261100-
CASS-FREMONT IA-GAGE-JEFFERSON-JOHNSON-LANCASTER-MILLS IA-
MONTGOMERY IA-NEMAHA-OTOE-PAGE IA-PAWNEE-RICHARDSON-SALINE-SEWARD-
1132 PM CDT FRI AUG 25 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PARTS OF EASTERN NEBRASKA AND
SOUTHWEST IOWA.

.DAY ONE...TONIGHT AND SATURDAY

HIT AND MISS THUNDERSTORMS ARE POSSIBLE OVERNIGHT IN SOUTHEAST
NEBRASKA AND SOUTHWEST IOWA. SEVERE STORMS ARE NOT EXPECTED.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

ISOLATED THUNDERSTORMS ARE POSSIBLE SUNDAY AND SUNDAY NIGHT.  NO
SEVERE STORMS ARE EXPECTED AS INSTABILITY WILL REMAIN LIMITED.

.SPOTTER INFORMATION STATEMENT...

STORM SPOTTER ACTIVATION SHOULD NOT BE NEEDED TONIGHT OR SATURDAY.

DERGAN