CRAWFORD-CARROLL-GREENE-BOONE-STORY-AUDUBON-GUTHRIE-DALLAS-CASS-
ADAIR-MADISON-WARREN-ADAMS-UNION-CLARKE-TAYLOR-RINGGOLD-DECATUR-
407 PM CDT SUN AUG 31 2014

THIS AFTERNOON AND TONIGHT…A FLASH FLOOD WATCH IS IN EFFECT FOR THE AREA. THUNDERSTORMS ARE EXPECTED THIS EVENING ACROSS THE AREA. THE PRIMARY SEVERE THREATS ARE LARGE HAIL AND HIGH WINDS…WITH AN ISOLATED TORNADO POSSIBLE. HEAVY RAINFALL IS POSSIBLE WITH SOME STORMS PRODUCING RAINFALL TOTALS OF 1 TO 3 INCHES.

MONDAY THROUGH SATURDAY…

THUNDERSTORMS WILL LINGER INTO MONDAY MORNING. ADDITIONAL ROUNDS OF THUNDERSTORMS ARE EXPECTED LATE TUESDAY NIGHT THROUGH FRIDAY. THE PROBABILITY OF SEVERE WEATHER IS LOW…WITH THE BEST CHANCE FOR SEVERE THUNDERSTORMS THURSDAY INTO FRIDAY.

.SPOTTER INFORMATION STATEMENT…

SPOTTER ACTIVATION IS LIKELY THIS EVENING INTO TONIGHT.

343 PM CDT SUN AUG 31 2014

…THUNDERSTORMS WITH HEAVY RAIN LIKELY TONIGHT…

Flash Flood Watch (Counties in green); Tornado Watch (Counties in yellow)

THUNDERSTORMS ARE EXPECTED TO BECOME WIDESPREAD THIS EVENING. THE STORMS WILL HAVE THE POTENTIAL TO PRODUCE HEAVY RAINFALL OVER A SHORT PERIOD OF TIME. IN ADDITION…SEVERAL STORMS MAY TRACK ACROSS SIMILAR AREAS AND FURTHER ENHANCE THE HEAVY RAIN THREAT.

IOWA COUNTIES: CRAWFORD-CARROLL-GREENE-BOONE-STORY-AUDUBON-GUTHRIE-DALLAS-POLK-CASS-ADAIR-MADISON-WARREN-ADAMS-UNION-CLARKE-TAYLOR-RINGGOLD-DECATUR-

FLASH FLOOD WATCH IN EFFECT FROM 7 PM CDT THIS EVENING THROUGH MONDAY MORNING…

WIDESPREAD HEAVY RAINFALL OVER THE PAST WEEK HAS RESULTED IN SATURATED SOILS AND FAVORABLE CONDITIONS FOR SIGNIFICANT RUNOFF. HEAVY RAINFALL IS POSSIBLE TONIGHT WITH THE POTENTIAL FOR WIDESPREAD 1 TO 2 INCHES OF RAIN. HEAVIER RAINFALL AMOUNTS IN EXCESS OF 3 INCHES MAY OCCUR.

FLASH FLOODING IS POSSIBLE ACROSS THE REGION. SIGNIFICANT PONDING IN URBAN AREAS IS POSSIBLE. IN ADDITION…SMALL STREAMS MAY RISE ABOVE THEIR BANKS AND CAUSE FLOODING OF LOW LYING AREAS INCLUDING ROADWAYS. FLASH FLOODING AT NIGHT IS EXTREMELY DANGEROUS. IN ADDITION…THESE RAINFALL AMOUNTS WILL CAUSE A FEW LARGER STREAMS TO NEAR FLOOD STAGE OVER THE NEXT FEW DAYS.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED.

335 PM CDT SUN AUG 31 2014

TORNADO WATCH 479 IS IN EFFECT UNTIL 900 PM CDT FOR THE FOLLOWING LOCATIONS

IOWA COUNTIES INCLUDED ARE: BUENA VISTA CHEROKEE CLAY CRAWFORD DICKINSON EMMET HARRISON IDA MILLS MONONA O’BRIEN OSCEOLA PALO ALTO PLYMOUTH POCAHONTAS POTTAWATTAMIE SAC SHELBY SIOUX WOODBURY.

EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 335 PM UNTIL 900 PM CDT.

* PRIMARY THREATS INCLUDE…A FEW TORNADOES POSSIBLE; SCATTERED LARGE HAIL LIKELY WITH ISOLATED VERY LARGE HAIL EVENTS TO 2.5 INCHES IN DIAMETER POSSIBLE; SCATTERED DAMAGING WIND GUSTS TO 70 MPH LIKELY

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG. AND 60 STATUTE MILES EAST AND WEST OF A LINE FROM 25 MILES NORTH NORTHWEST OF SPENCER IOWA TO 45 MILES SOUTHWEST OF CONCORDIA KANSAS.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

REMEMBER…A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS.

1130 AM CDT SUN AUG 31 2014

REST OF TODAY...PARTLY SUNNY. ISOLATED THUNDERSTORMS EARLY IN THE AFTERNOON…THEN SCATTERED THUNDERSTORMS LATE IN THE AFTERNOON. BREEZY. HIGH IN THE UPPER 80S. SOUTH WIND 15 TO 20 MPH. CHANCE OF THUNDERSTORMS 40 PERCENT.

TONIGHT…SHOWERS THROUGH MIDNIGHT. THUNDERSTORMS THROUGH THE NIGHT. SOME THUNDERSTORMS MAY PRODUCE DAMAGING WIND…LARGE HAIL AND HEAVY RAINFALL IN THE EVENING…THEN SOME THUNDERSTORMS MAY BE SEVERE WITH DAMAGING WIND…LARGE HAIL AND HEAVY RAINFALL. SOME THUNDERSTORMS MAY PRODUCE DAMAGING WIND…LARGE HAIL AND HEAVY RAINFALL AFTER MIDNIGHT. LOW IN THE MID 60S. SOUTH WIND 10 TO 15 MPH WITH GUSTS TO AROUND 25 MPH. CHANCE OF PRECIPITATION 90 PERCENT.

LABOR DAY…PARTLY SUNNY WITH A 20 PERCENT CHANCE OF THUNDERSTORMS UNTIL LATE AFTERNOON…THEN MOSTLY SUNNY LATE IN THE AFTERNOON. HIGH IN THE UPPER 70S. WEST WIND 5 TO 10 MPH.

MONDAY NIGHT…MOSTLY CLOUDY THROUGH MIDNIGHT…THEN PARTLY CLOUDY WITH A 20 PERCENT CHANCE OF THUNDERSTORMS AFTER MIDNIGHT. LOW IN THE UPPER 50S. NORTHWEST WIND NEAR 5 MPH.

TUESDAY…SUNNY. HIGH IN THE LOWER 80S. WEST WIND NEAR 10 MPH.

TUESDAY NIGHT AND WEDNESDAY…PARTLY CLOUDY. A 20 PERCENT CHANCE OF THUNDERSTORMS. LOW IN THE LOWER 60S. HIGH IN THE LOWER 80S.

IA COUNTIES: MONONA-HARRISON-SHELBY-POTTAWATTAMIE-MILLS-MONTGOMERY-FREMONT-PAGE…..NE COUNTIES-KNOX-CEDAR-THURSTON-ANTELOPE-PIERCE-WAYNE-BOONE-MADISON-STANTON-CUMING-BURT-PLATTE-COLFAX-DODGE-WASHINGTON-BUTLER-SAUNDERS-DOUGLAS-SARPY-SEWARD-LANCASTER-CASS-OTOE-SALINE- JEFFERSON-GAGE-JOHNSON-NEMAHA-PAWNEE-RICHARDSON-

1137 AM CDT SUN AUG 31 2014

THIS AFTERNOON AND TONIGHT… ISOLATED THUNDERSTORMS WILL AFFECT PARTS OF THE AREA THROUGH EARLY AFTERNOON. THESE STORMS SHOULD REMAIN MOSTLY BELOW SEVERE LIMITS. THUNDERSTORM COVERAGE AND STRENGTH SHOULD INCREASE ACROSS THE AREA LATER THIS AFTERNOON INTO THIS EVENING. CURRENT INDICATIONS SUGGEST SEVERE STORMS COULD DEVELOP BETWEEN 4 AND 6 PM IN EASTERN NEBRASKA WITH THE HIGHEST PROBABILITIES FOR THE STRONGEST STORMS INITIALLY DEVELOPING FROM OMAHA AND TEKAMAH SOUTHWEST THROUGH LINCOLN…DAVID CITY AND COLUMBUS. HOWEVER…SEVERE STORMS REMAIN A THREAT OVER THE ENTIRE REGION. THE THUNDERSTORMS SHOULD THEN DEVELOP OR SPREAD ACROSS THE REST OF THE AREA DURING THE EVENING.

LARGE HAIL…DAMAGING WINDS AND LOCALLY HEAVY RAIN ARE ALL POSSIBLE WITH THE STRONGER STORMS AND SOME OF THE HAIL COULD BE VERY LARGE. ISOLATED TORNADOES CAN NOT BE RULED OUT WITH MORE DISCRETE STORMS THAT MANAGE TO DEVELOP…ALTHOUGH THE ACTIVITY SHOULD BEGIN TO CONSOLIDATE THROUGH EVENING WITH DAMAGING WIND THE PRIMARY THREAT.

MINOR FLOODING SHOULD CONTINUE ALONG SOME SMALL STREAMS IN SOUTHEAST NEBRASKA. THAT FLOODING MAY BE AGGRAVATED OR NEW FLOODING COULD DEVELOP TONIGHT DUE TO LOCALLY HEAVY RAIN THAT MAY FALL. THE THUNDERSTORMS WILL BE THE RESULT OF A LARGE DISTURBANCE TRACKING ACROSS THE PLAINS TODAY WHICH WILL PUSH A COLD FRONT ACROSS EASTERN NEBRASKA BY EVENING AND INTO WESTERN IOWA TONIGHT.

LABOR DAY THROUGH SATURDAY…

THERE IS A CHANCE FOR THUNDERSTORMS MONDAY AND INTO MONDAY NIGHT FOR PARTS OF THE AREA. THE CHANCE OF SEVERE STORMS IN THOSE PERIODS SEEMS LOW AT THIS TIME. THUNDERSTORMS WILL ALSO BE POSSIBLE FOR PARTS OF THE AREA TUESDAY NIGHT…WEDNESDAY NIGHT AND THEN FROM THURSDAY NIGHT INTO SATURDAY AS SEVERAL DISTURBANCES CROSS THE REGION.

SPOTTER INFORMATION STATEMENT…STORM SPOTTERS COULD BE NEEDED LATER THIS AFTERNOON AND THIS EVENING.

AREA COUNTIES: SAC-CRAWFORD-CARROLL-AUDUBON-GUTHRIE-DALLAS-CASS-ADAIR-MADISON-ADAMS-UNION-TAYLOR-RINGGOLD…430 AM CDT SUN AUG 31 2014

TODAY AND TONIGHT – THUNDERSTORMS WILL DEVELOP THIS AFTERNOON AND CONTINUE TONIGHT. SEVERE WEATHER IS POSSIBLE WEST OF U.S. HIGHWAY 169 BY LATE THIS AFTERNOON AND OVER THE AREA ENTIRE AREA THIS EVENING. STRONG WINDS AND HAIL UP TO GOLF BALL SIZE ARE POSSIBLE. AN ISOLATED TORNADO IS POSSIBLE INTO THE VERY EARLY EVENING HOURS. HEAVY RAINFALL IS POSSIBLE WITH SOME STORMS PRODUCING RAINFALL TOTALS AROUND 3 INCHES.

AREA COUNTIES: MONONA-HARRISON-SHELBY-POTTAWATTAMIE-MILLS-MONTGOMERY-FREMONT-PAGE…

TODAY AND TONIGHT – ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS SHOULD AFFECT PARTS OF THE AREA THROUGH EARLY AFTERNOON. THESE WILL PROBABLY REMAIN MOSTLY BELOW SEVERE LIMITS.

MORE THUNDERSTORMS ARE FORECAST FOR LATER THIS AFTERNOON AND THIS EVENING. CURRENT INDICATIONS SUGGEST SEVERE STORMS COULD DEVELOP BETWEEN 3 AND 5 PM IN EASTERN NEBRASKA. THE HIGHEST PROBABILITIES IN THAT TIME ARE ACROSS NORTHEAST NEBRASKA. STORMS SHOULD THEN DEVELOP OR SPREAD ACROSS THE REST OF THE AREA DURING THE LATE AFTERNOON AND EVENING.

LARGE HAIL…DAMAGING WINDS AND LOCALLY HEAVY RAIN SHOULD BE THE PRIMARY HAZARDS BUT ISOLATED TORNADOES CAN NOT BE RULED OUT.

Today – Scattered showers and thunderstorms, mainly after 1pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 86. Breezy, with a south wind 7 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight – Showers and thunderstorms, mainly before 4am. Some storms could be severe, with large hail, damaging winds, and heavy rain. Low around 66. South southeast wind 10 to 13 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.
Labor Day – A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 78. West southwest wind around 9 mph becoming northwest in the afternoon.
Monday Night – A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 58. North northwest wind around 6 mph becoming calm after midnight.
Tuesday – Mostly sunny, with a high near 82. West wind 3 to 8 mph.
Wednesday – Mostly sunny, with a high near 85.

(click on image to enlarge) Area in yellow indicates a “Slight” risk of severe weather.

The National Weather Service in Des Moines reports thunderstorms are expected to develop during peak heating of the day Sunday along a cold front through the Missouri River Valley and then move into Iowa during the late afternoon and early evening hours. Some of the storms may be severe with heavy, potentially flooding rains. Large hail, damaging winds and a few tornadoes are all possible.

Many people will likely have outdoor plans this Labor Day weekend. Keep a close eye on the weather, have your safety plan in place and be ready to seek shelter if threatening weather approaches.

200 PM CDT SAT AUG 30 2014

REST OF TODAY…MOSTLY SUNNY. HIGH IN THE LOWER 80S. WEST WIND AROUND 5 MPH.

TONIGHT...MOSTLY CLEAR. LOW IN THE MID 60S. SOUTH WIND NEAR 5 MPH.

SUNDAY…MOSTLY SUNNY. A 50 PERCENT CHANCE OF THUNDERSTORMS LATE IN THE AFTERNOON. BREEZY. HIGH IN THE UPPER 80S. SOUTH WIND 5 TO 15 MPH INCREASING TO 15 TO 20 MPH IN THE AFTERNOON.

SUNDAY NIGHT…THUNDERSTORMS. LOW IN THE MID 60S. SOUTH WIND 5 TO 15 MPH. GUSTS UP TO 25 MPH THROUGH MIDNIGHT. CHANCE OF THUNDERSTORMS 80 PERCENT.

LABOR DAY...MOSTLY CLOUDY IN THE MORNING THEN BECOMING MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS. HIGH AROUND 80. WEST WIND 5 TO 10 MPH.

MONDAY NIGHT…PARTLY CLOUDY. LOW IN THE UPPER 50S.

TUESDAY AND TUESDAY NIGHT…PARTLY CLOUDY. A 20 PERCENT CHANCE OF THUNDERSTORMS. HIGH AROUND 80. LOW AROUND 60.

WEDNESDAY…MOSTLY SUNNY. HIGH IN THE MID 80S.

The (podcast) KJAN listening area forecast & weather information for Atlantic.

Podcast: Play in new window | Download (1.0MB)

Subscribe: RSS