COUNTIES: PAGE-MILLS -HARRISON-MONTGOMERY-POTTAWATTAMIE-FREMONT
1126 AM CDT TUE SEP 9 2014
AT 1125 AM CDT…DOPPLER RADAR WAS TRACKING A LINE OF STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 7 MILES NORTH OF SCHUYLER, NE TO NEAR PACIFIC JUNCTION, IA…AND MOVING EAST AT 30 MPH. DIME SIZE HAIL AND WINDS IN EXCESS OF 30 MPH WILL BE POSSIBLE WITH SOME OF THESE STORMS.
LOCATIONS IMPACTED INCLUDE…
OMAHA…COUNCIL BLUFFS…BELLEVUE…FREMONT…PAPILLION…LA VISTA…
TREYNOR AND FORT CALHOUN.
THESE STORMS MAY INTENSIFY…SO BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS…AS WELL AS LOCAL CABLE TV OUTLETS…FOR ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.
958 AM CDT TUE SEP 9 2014
THIS HAZARDOUS WEATHER OUTLOOK IS FOR MOST OF EASTERN NEBRASKA AND
PARTS OF SOUTHWEST IOWA.
THIS AFTERNOON AND TONIGHT…SEVERE THUNDERSTORMS ARE LIKELY THIS AFTERNOON AND THIS EVENING AS A POTENT STORM SYSTEM MOVES INTO THE CENTRAL PLAINS. SEVERAL
SURFACE BOUNDARIES WILL ADD TO THE COMPLEXITY IN STORM DEVELOPMENT TODAY. THE MAIN FOCUS FOCUS FOR POSSIBLE TORNADOES IS A WARM FRONT THAT IS EXPECTED TO BE LOCATED ACROSS SOUTHEAST NEBRASKA AND SOUTHWEST IOWA THIS AFTERNOON AND EARLY EVENING.
ABUNDANT LOW LEVEL MOISTURE…INSTABILITY AND STRONG SHEAR WILL BE IN PLACE CREATING A FAVORABLE ENVIRONMENT FOR SEVERE STORMS. A COLD FRONT WILL ALSO MOVE INTO THE AREA FROM THE NORTHWEST AND BE ANOTHER FOCAL POINT FOR THUNDERSTORMS THIS EVENING.
THUNDERSTORMS ARE EXPECTED TO INCREASE IN COVERAGE THIS AFTERNOON. THE THREAT OF STORMS WILL CONTINUE INTO THE EVENING. ISOLATED TORNADOES…LARGE HAIL…DAMAGING WINDS AND HEAVY RAIN WILL BE THE MAIN THREATS.
In a update late this (Tuesday) morning, officials with the National Weather Service in Des Moines said “MAJOR rainfall likely for many tonight!” A widespread 2″ to 4″ of rain is likely for much of Iowa. This may lead to flash flooding and river flooding at many Iowa locations this evening into tomorrow morning. Locations from Atlantic eastward could see anywhere from 3-to 5-inches of rain during the period.
Most flash flood fatalities occur at night because people cannot gauge the depth of the water. When in doubt, remember to turn around, don’t drown. A Flash Flood Watch is in effect for all but the far west and southwestern counties in Iowa, from 7-p.m. through early Wednesday morning.
AREA COUNTIES: SAC-CRAWFORD-CARROLL-GREENE-AUDUBON-
749 AM CDT TUE SEP 9 2014
…FOG IS DEVELOPING ACROSS THE REGION THIS MORNING…
FOG…DENSE AT TIMES…IS DEVELOPING OVER PORTIONS OF WESTERN AND NORTHWESTERN IOWA EARLY TODAY. THE FOG MAY PERSIST FOR SEVERAL HOURS THIS MORNING BEFORE SOME IMPROVEMENT IS NOTED. VISIBILITY HAS DROPPED TO ONE QUARTER MILE OR LESS AT TIMES OVER FAR NORTHWEST IOWA. PERSONS TRAVELING ACROSS THE REGION EARLY TODAY SHOULD ALLOW FOR EXTRA TRAVEL TIME…EXTRA DISTANCE BETWEEN YOU AND THE VEHICLE IN FRONT OF YOU…AND USE LOW BEAM HEADLIGHTS. ALSO BE ESPECIALLY CAUTIOUS NEAR INTERSECTIONS AND RAILROAD CROSSINGS AS TRAINS AND VEHICLES MAY BE HIDDEN FROM VIEW BY THE FOG.
Today – Scattered showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then showers and thunderstorms likely after 4pm. Some of the storms could produce heavy rain. Increasing clouds, with a high near 83. South wind 7 to 13 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Tonight – **FLASH FLOOD WATCH 7-pm to 7-a.m Wed.** Showers and thunderstorms, mainly before 4am. Some of the storms could produce heavy rain. Low around 63. Southeast wind 10 to 14 mph becoming west after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 100%. New rainfall amounts between 2 and 3 inches possible.
Wednesday – A chance of showers and thunderstorms before 7am, then a slight chance of showers between 7am and 1pm. Cloudy, with a temperature falling to around 58 by 4pm. Windy, with a northwest wind 14 to 23 mph, with gusts as high as 31 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night – Mostly cloudy, with a low around 45. Breezy, with a north northwest wind 10 to 17 mph, with gusts as high as 24 mph.
Thursday – Partly sunny, with a high near 60. North wind 9 to 11 mph.
Thursday Night – A 40 percent chance of showers. Mostly cloudy, with a low around 44. New precipitation amounts between a tenth and quarter of an inch possible.
Friday – A 40 percent chance of showers. Mostly cloudy, with a high near 56.
COUNTIES IN THE KJAN LISTENING AREA: SAC-CRAWFORD-CARROLL-AUDUBON-GUTHRIE-DALLAS-CASS-ADAIR-MADISON-ADAMS-UNION-TAYLOR-RINGGOLD
356 AM CDT TUE SEP 9 2014
FLASH FLOOD WATCH IN EFFECT FROM 7-P.M. THIS EVENING THROUGH 7-A.M. WEDNESDAY.
WIDESPREAD RAINFALL AMOUNTS OF 1 TO 2 INCHES CAN BE EXPECTED ACROSS CENTRAL IOWA TONIGHT…WITH LOCALLY HIGHER AMOUNTS OF 3 INCHES OR MORE POSSIBLE.
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.
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.
1155 AM CDT MON SEP 8 2014
…THUNDERSTORMS WITH STRONG WIND GUSTS AND BRIEF MODERATE TO
HEAVY RAINFALL POSSIBLE THROUGH EARLY AFTERNOON…
A LINE OF THUNDERSTORMS MOVING INTO WEST CENTRAL IOWA FROM JUST
SOUTH OF SPENCER TO TEMPLETON IS MOVING VERY SLOWLY TO THE EAST
SOUTHEAST. THESE STORMS HAVE THE CAPABILITY OF PRODUCING HEAVY
RAINFALL…AT A RATE OF THREE QUARTERS OF AN INCH TO AN INCH IN AN
HOUR. STRONG WIND GUSTS OF 35 TO 50 MPH ARE ALSO POSSIBLE WITH
AREA COUNTIES: SAC-CRAWFORD-CARROLL-GREENE-
1026 AM CDT MON SEP 8 2014
…STRONG WIND GUSTS POSSIBLE THROUGH NOON…
AN AREA OF DECAYING THUNDERSTORMS ACROSS NORTHERN IOWA…MAINLY ALONG AND NORTH OF HIGHWAY 20…IS PRODUCING WIND GUSTS OF 35 TO 50 MPH. SMALL OR LOOSE OBJECTS CAN BE BLOWN AROUND FROM WIND GUSTS OF THESE MAGNITUDES. FURTHER WEST AND SOUTH ARE SCATTERED THUNDERSTORMS. THE STORMS WILL ALSO BE CAPABLE OF PRODUCING 35 TO
50 MPH WIND GUSTS ALONG WITH MODERATE RAINFALL. RAINFALL RATES OF A HALF TO THREE QUARTERS OF AN INCH IN A HALF HOUR ARE POSSIBLE.
817 AM CDT MON SEP 8 2014
…SIGNIFICANT WEATHER ADVISORY FOR MONONA COUNTY UNTIL 900 AM CDT…
AT 814 AM CDT…DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
SMITHLAND…OR 28 MILES SOUTHWEST OF IDA GROVE…MOVING SOUTHEAST AT
WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH THIS STORM.
LOCATIONS IMPACTED INCLUDE…
RODNEY…KENNEBEC AND LEWIS AND CLARK STATE PARK.