(Source: NWS/Des Moines) Counties in IA: SAC-CRAWFORD-CARROLL-AUDUBON-GUTHRIE-DALLAS-CASS-ADAIR-MADISON-ADAMS-UNION-TAYLOR-RINGGOLD

TODAY (TUESDAY): THUNDERSTORM CHANCES WILL INCREASE ACROSS THE AREA FROM WEST TO EAST BY MID TO LATE AFTERNOON INTO TONIGHT. THERE IS A SLIGHT RISK OF SEVERE STORMS…WITH LARGE HAIL AND DAMAGING WINDS THE MAIN THREATS. AN ISOLATED TORNADO WILL BE POSSIBLE NORTH OF HIGHWAY 30. LOCALLY HEAVY RAINFALL WILL BE POSSIBLE WITH THE STRONGEST STORMS.

ADDITIONAL THUNDERSTORMS ARE POSSIBLE THURSDAY AFTERNOON AND NIGHT SOUTH OF INTERSTATE 80. THE THREAT FOR SEVERE WEATHER IS LOW AT THIS TIME.

SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON INTO TONIGHT.

(Source: NWS/Valley, NE) IA Counties: MONONA-HARRISON-SHELBY-POTTAWATTAMIE-MILLS-MONTGOMERY-FREMONT-PAGE.

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

THIS AFTERNOON AND TONIGHT:  ALTHOUGH THERE IS A CHANCE OF THUNDERSTORMS ACROSS MUCH OF THE AREA THIS AFTERNOON…MORNING CONVECTION HAD PUSHED AN OUTFLOW BOUNDARY THROUGH SOUTHEAST NEBRASKA AND SOUTHWEST IOWA AND CREATED  SOME STABILIZATION OF THE ATMOSPHERE. HOWEVER…HEATING THROUGH THIS AFTERNOON COMBINED WITH A COLD FRONT PUSHING INTO NORTHEAST NEBRASKA WILL LIKELY BRING NEW DEVELOPMENT…ESPECIALLY BY LATE AFTERNOON IN NORTHEAST NEBRASKA.

THESE THUNDERSTORMS COULD BECOME SEVERE WITH THE AMOUNT OF SHEAR EXPECTED AND FORECAST INSTABILITY…WITH LARGE HAIL AND DAMAGING WINDS POSSIBLE. A FEWOF THE STORMS COULD ALSO DROP HEAVY RAIN. THE ACTIVITY WOULD LIKELY BUILD AND DEVELOP SOUTHEAST ACROSS MUCH OF THE AREA THROUGH THIS EVENING.

STORM SPOTTER ACTIVATION MAY BE REQUIRED LATER TODAY…ESPECIALLY
FROM LATE THIS AFTERNOON INTO THIS EVENING.

The Severe Storms Prediction Center (SPC) in Norman, OK., has cancelled the Severe Thunderstorm Watch which had been in effect until Noon today for parts of Nebraska and Iowa.

SEVERE THUNDERSTORM WATCH 473 REMAINS VALID UNTIL NOON CDT TODAY
FOR THE FOLLOWING AREAS… IN IOWA THIS WATCH INCLUDES 6 COUNTIES:

FREMONT               MILLS                 MONTGOMERY
PAGE                  POTTAWATTAMIE         SHELBY

THIS INCLUDES THE CITIES OF…CLARINDA…COUNCIL BLUFFS…
FARRAGUT…GLENWOOD…HAMBURG…HARLAN…RED OAK…SHENANDOAH…
SIDNEY AND TABOR.

Harrison and Monona Counties are no longer included in the watch.

741 AM CDT TUE AUG 6 2013

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A
   
    * SEVERE THUNDERSTORM WARNING FOR…
      SOUTHWESTERN SHELBY COUNTY IN SOUTHWEST IOWA…
      SOUTHEASTERN HARRISON COUNTY IN SOUTHWEST IOWA…
      POTTAWATTAMIE COUNTY IN SOUTHWEST IOWA…

* UNTIL 815 AM CDT

* AT 740 AM CDT…A SEVERE THUNDERSTORM WAS LOCATED 7 MILES SOUTHEAST  OF MISSOURI VALLEY…OR 17 MILES NORTHEAST OF OMAHA…MOVING EAST  AT 35 MPH.

HAZARD…60 MPH WIND GUSTS.

SOURCE…RADAR INDICATED.

IMPACT…EXPECT DAMAGE TO ROOFS…SIDING AND TREES.

* LOCATIONS IMPACTED INCLUDE…
MISSOURI VALLEY…OAKLAND…UNDERWOOD…SHELBY…MINDEN…PERSIA…
NEOLA…CRESCENT…HANCOCK…MCCLELLAND…TENNANT…ARROWHEAD
PARK…HISTORICAL VILLAGE WELCOME CENTER AND HITCHCOCK NATURE
CENTER.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

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

HARRISON IA-WASHINGTON NE-
739 AM CDT TUE AUG 6 2013

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* URBAN AND SMALL STREAM FLOOD ADVISORY FOR…
SOUTHWESTERN HARRISON COUNTY IN SOUTHWEST IOWA…
CENTRAL WASHINGTON COUNTY IN EAST CENTRAL NEBRASKA…

* UNTIL 945 AM CDT

* AT 730 AM CDT…DOPPLER RADAR INDICATED HEAVY RAIN THAT WILL CAUSE
URBAN AND SMALL STREAM FLOODING IN THE ADVISORY AREA. UP TO AN
INCH AND A HALF OF RAIN HAS FALLEN IN THE PAST HOUR.

* SOME LOCATIONS THAT WILL EXPERIENCE MINOR FLOODING INCLUDE
BLAIR.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE…TURN AROUND…DONT DROWN.

717 AM CDT TUE AUG 6 2013

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR…
SOUTHERN HARRISON COUNTY IN SOUTHWEST IOWA…
NORTHWESTERN POTTAWATTAMIE COUNTY IN SOUTHWEST IOWA…
NORTHEASTERN WASHINGTON COUNTY IN EAST CENTRAL NEBRASKA…

* UNTIL 745 AM CDT

* AT 712 AM CDT…A SEVERE THUNDERSTORM WAS LOCATED NEAR BLAIR…OR
19 MILES NORTH OF OMAHA…MOVING EAST AT 35 MPH.

HAZARD…70 MPH WIND GUSTS.

SOURCE…TRAINED WEATHER SPOTTERS.

IMPACT…EXPECT CONSIDERABLE TREE DAMAGE. DAMAGE IS LIKELY TO MOBILE
HOMES…ROOFS AND OUTBUILDINGS.

* LOCATIONS IMPACTED INCLUDE…
BLAIR…MISSOURI VALLEY…LOGAN…MODALE…NEOLA…HISTORICAL
VILLAGE WELCOME CENTER AND DESOTO BEND NATIONAL WILDLIFE REFUGE.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

THIS IS A DANGEROUS SITUATION. THIS STORM IS PRODUCING WIND DAMAGE
NEAR BLAIR. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

BULLETIN – IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 473
NWS STORM PREDICTION CENTER NORMAN OK
625 AM CDT TUE AUG 6 2013

SEVERE THUNDERSTORM WATCH 473 IS IN EFFECT UNTIL 1200 PM CDT
FOR THE FOLLOWING  IOWA COUNTIES…

FREMONT              HARRISON            MILLS
MONONA               MONTGOMERY          PAGE
POTTAWATTAMIE        SHELBY

AREA COUNTIES: SAC-CRAWFORD-CARROLL-AUDUBON-GUTHRIE-CASS-ADAIR-ADAMS-UNION-TAYLOR-RINGGOLD;   537 AM CDT TUE AUG 6 2013

…LOCALLY DENSE FOG AT TIMES THROUGH MORNING…

AREAS OF FOG WILL PERSIST ACROSS THE AREA THROUGH THE EARLY
MORNING HOURS. VISIBILITIES WILL GENERALLY BE AROUND OR GREATER
THAN ONE MILE. HOWEVER…PATCHY DENSE FOG IS POSSIBLE WITH
VISIBILITIES LESS THAN ONE MILE…DOWN TO ONE QUARTER OF A MILE AT
TIMES…ESPECIALLY IN LOW LYING AREAS. DUE TO THE PATCHY NATURE OF
THE MOST RESTRICTED VISIBILITIES…USE EXTRA CAUTION WHILE
TRAVELING. SLOW DOWN…USE YOUR HEADLIGHTS AND LEAVE PLENTY OF
DISTANCE AHEAD OF YOU.

Here’s the Freese-Notis (podcast) forecast for Atlantic & the KJAN listening area, and weather information for Atlantic from KJAN News Director Ric Hanson…

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