SEVERE THUNDERSTORM WARNING

NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA

241 PM CDT WED MAY 29 2013

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A SEVERE THUNDERSTORM WARNING FOR…CENTRAL MONTGOMERY COUNTY IN SOUTHWEST IOWA…EXTREME SOUTHEASTERN POTTAWATTAMIE COUNTY IN SOUTHWEST IOWA…UNTIL 315 PM CDT

AT 237 PM CDT…A SEVERE THUNDERSTORM WAS LOCATED NEAR RED OAK…OR 40 MILES NORTH OF TARKIO…MOVING NORTHEAST AT 35 MPH. HAZARD…60 MPH WIND GUSTS. SOURCE…RADAR INDICATED. IMPACT…EXPECT DAMAGE TO ROOFS…SIDING AND TREES.

LOCATIONS IMPACTED INCLUDE…RED OAK…STANTON…ELLIOTT AND GRANT.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A BUILDING.

NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA

145 PM CDT WED MAY 29 2013

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A FLASH FLOOD WARNING FOR…

EXTREME SOUTHERN MONTGOMERY COUNTY IN SOUTHWEST IOWA…NORTHWESTERN PAGE COUNTY IN SOUTHWEST IOWA…EASTERN FREMONT COUNTY IN SOUTHWEST IOWA… UNTIL 445 PM CDT

* AT 138 PM CDT…DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. UP TO TWO INCHES OF RAIN HAVE ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE…SHENANDOAH…ESSEX…FARRAGUT AND RIVERTON. THIS INCLUDES RIVERTON ROAD.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE

ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS

SAFELY. MOVE TO HIGHER GROUND.

1137 AM CDT WED MAY 29 2013
 
 …SIGNIFICANT WEATHER ADVISORY FOR FREMONT AND NORTHWESTERN PAGE
 COUNTIES UNTIL 1215 PM CDT…
 
 AT 1136 AM CDT…NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
 A STRONG THUNDERSTORM NEAR HAMBURG…OR 15 MILES NORTHWEST OF
 TARKIO…MOVING NORTHEAST AT 40 MPH.
 
 HAIL UP TO THE SIZE OF DIMES WILL BE POSSIBLE WITH THIS STORM.
 
 LOCATIONS IMPACTED INCLUDE…
 SHENANDOAH…SIDNEY…HAMBURG…ESSEX…FARRAGUT…RIVERTON AND
 RANDOLPH.

A FLASH FLOOD WATCH IS IN EFFECT THROUGH THURSDAY EVENING FOR MUCH OF THE STATE OF IOWA

WIDESPREAD HEAVY RAINFALL HAS IMPACTED THE STATE OVER THE  PAST 5 DAYS WITH CURRENT CONDITIONS INCLUDING SATURATED SOILS…SIGNIFICANT PONDING AND STREAMS RUNNING AT BANKFULL OR ARE CURRENTLY IN FLOOD. ONE TO THREE INCHES OF RAIN IS FORECAST FOR THE AREA THROUGH THURSDAY AFTERNOON. LOCALIZED AMOUNTS OVER 5 INCHES MAY OCCUR.

SIGNIFICANT AND LIFE THREATENING FLASH FLOODING WILL BE POSSIBLE. PERSONS LIVING IN FLOOD PRONE AREAS SHOULD BE PREPARED TO TAKE ACTION. DO NOT ATTEMPT TO CROSS FLOODED ROADWAYS! AS LITTLE AS 6 INCHES OF RUNNING WATER CAN SWEEP A VEHICLE OFF THE ROAD. IN ADDITION…SIGNIFICANT RIVER FLOODING IS POSSIBLE AFTER THIS EVENT.

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

GUTHRIE IA-GREENE IA-
 1126 AM CDT WED MAY 29 2013
 
 …A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
 GREENE AND NORTHEASTERN GUTHRIE COUNTIES UNTIL 1145 AM CDT…
 
 AT 1122 AM CDT…A SEVERE THUNDERSTORM WAS LOCATED 11 MILES SOUTH OF
 JEFFERSON…AND MOVING NORTHEAST AT 40 MPH.
 
 HAZARD…QUARTER SIZE HAIL.
 
 SOURCE…RADAR INDICATED.
 
 IMPACT…DAMAGE TO VEHICLES AND CROPS IS EXPECTED.
 
 LOCATIONS IMPACTED INCLUDE…
 RIPPEY AND GRAND JUNCTION.
 
 PRECAUTIONARY/PREPAREDNESS ACTIONS…
 
 FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
 BUILDING.

DES MOINES, Iowa (AP) – This spring is now the wettest on record in Iowa. State Climatologist Harry Hillaker says statewide average rainfall of 16.4 inches as of Tuesday morning is the most rain in March, April and May in 141 years of records. The previous record was 15.5 inches in 1892 and normal is just over 10 inches.  That explains why Iowa rivers are overflowing shutting down roads, flooding basements, and sending emergency managers into flood planning mode.
 
The worry is another storm system is bearing down on Iowa bringing the potential for heavy rain. One factor that may have prevented a devastating flood so far is last year’s drought but that benefit has faded and Iowa is at a tipping point for major flooding if heavy rain comes in the wrong places.

BULLETIN – IMMEDIATE BROADCAST REQUESTED
 SEVERE THUNDERSTORM WARNING
 NATIONAL WEATHER SERVICE DES MOINES IA
 1111 AM CDT WED MAY 29 2013
 
 THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
 
 * SEVERE THUNDERSTORM WARNING FOR…
   SOUTHEASTERN GREENE COUNTY IN WEST CENTRAL IOWA…
   NORTHEASTERN GUTHRIE COUNTY IN WEST CENTRAL IOWA…
 
 * UNTIL 1145 AM CDT
 
 * AT 1106 AM CDT…A SEVERE THUNDERSTORM WAS LOCATED NEAR PANORA…
   AND MOVING NORTH AT 35 MPH.
 
   HAZARD…QUARTER SIZE HAIL.
 
   SOURCE…RADAR INDICATED.
 
   IMPACT…DAMAGE TO VEHICLES AND CROPS IS EXPECTED.
 
 * LOCATIONS IMPACTED INCLUDE…
   JEFFERSON…BAGLEY…JAMAICA…RIPPEY AND GRAND JUNCTION.
 
 PRECAUTIONARY/PREPAREDNESS ACTIONS…
 
 FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
 BUILDING.

SCATTERED THUNDERSTORMS WILL AGAIN BE POSSIBLE OVER THE AREA  TODAY. FROM THIS EVENING THROUGH TONIGHT PERIODS OF MORE WIDESPREAD  AND STRONGER THUNDERSTORMS ARE EXPECTED. A FEW STORMS MAY BE  SEVERE WITH LARGE HAIL AND DAMAGING THUNDERSTORM WINDS THE MAIN  THREAT. AN ISOLATED TORNADO IS ALSO POSSIBLE.

THE THUNDERSTORMS WILL ALSO BE CAPABLE OF PRODUCING LOCALLY HEAVY RAIN AND FLOODING LATER THIS EVENING AND OVERNIGHT TONIGHT. THIS MAY LEAD TO FLASH
 FLOODING OR AREAL FLOODING…ESPECIALLY OVER AREAS THAT HAVE
 ALREADY SEEN FLOODING THIS WEEK.

The National Weather Service in Des Moines says a stronger storm system will arrive later this (Wednesday) afternoon and tonight across the region. This will lead to several periods of thunderstorms today and this evening and again overnight and Thursday. The combination of repeated rainfall may lead to additional flooding across the region especially over areas that have already seen heavy rainfall the past several days. In addition severe weather is a possibility as this stronger system moves northeast across Iowa tonight and Thursday. Monitor forecasts for the latest updates on this upcoming storm system.

Here’s the Freese-Notis (podcast) weather forecast for Atlantic and the KJAN listening area, and weather information for Atlantic….

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