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DENSE FOG ADVISORY thru this afternoon (3/13) WIND ADVISORY thru this evening

Weather

March 13th, 2019 by Ric Hanson

A DENSE FOG ADVISORY remains in effect for the listening until early this afternoon. And a WIND ADVISORY is in effect from 10-a.m. today (Wednesday) until 7-p.m. Visibility of less then 1/4 of a mile or less can be expected through mid-morning. SE winds of 25-35 mph gusting up to 45 mph are expected by late this morning into the early evening hours.

The very dense fog will impact the morning commute and cause tricky travel at times. Even in daylight, please use low beam headlights and allow extra space between you and the vehicle ahead of you. Gusty winds may make travel difficult for high-profile vehicles later today, especially during the evening commute.

A Wind Advisory means that sustained winds of 30 mph or wind gusts of 45 mph or greater are expected. Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution.

Flood Warning for NE Mills & S. Central Pottawattamie County until 4:45-p.m. 3/13

Weather

March 13th, 2019 by Ric Hanson

The National Weather Service in Omaha has issued a

* Flood Warning for…Rain and Snowmelt in… Northeastern Mills County and South central Pottawattamie County....Until 445 PM CDT Wednesday.

* At 443 AM CDT, a reporting gauge near Henderson on the West Nishnabotna River was reporting stages slightly above flood stage. Flooding will likely continue in the area today.

* Some locations that will experience flooding include…Macedonia, Henderson and Old Town Park.

The Flood Warning continues for The West Nishnabotna River At Hancock. from early this morning to Friday afternoon…or until the warning is cancelled.
* At 4:15 AM Wednesday the stage was 14.1 feet…or 0.1 feet above flood stage. * Flood stage is 14.0 feet.
* Minor flooding is occurring and Record flooding is forecast.
* Forecast…The river will continue rising to near 24.3 feet by after midnight tomorrow. The river will fall below flood stage late tomorrow evening.
* Impact…at 24.0 feet…The top of the berm protecting the lagoons for the city of Hancock are overtopped.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

Turn around, don`t drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the
dangers of flooding. A Flood Warning means that flooding is imminent or occurring. All interested parties should take necessary precautions immediately.

Flood Watch info. for the listening area, 3/13/19

Weather

March 13th, 2019 by Ric Hanson

410 AM CDT Wed Mar 13 2019 …River flooding and Significant Ponding Water Likely This Week Due to Snowmelt and Expected Rainfall… .The combination of warmer temperatures and forecast total rainfall amounts of one to near two inches is going to lead to a rapid snow melt across much of central Iowa. Significant ponding of water in low lying, poor drainage is likely, potentially impacting roads and travel. Periods of rainfall are likely today into Thursday, with the highest totals occurring today into this evening. The runoff from the snowmelt and rain will lead to significant rises on area streams. Ice jam flooding may occur, creating rapid rises upstream of the jams. Minor to moderate river flooding is possible by Thursday and into the weekend.

Sac-Crawford-Carroll-Audubon-Guthrie-Dallas-Cass-Adair-Madison-Adams-Union- Taylor-Ringgold-Monona-Harrison-Shelby-Pottawattamie-Mills-Montgomery-Fremont- Page Counties: FLOOD WATCH REMAINS IN EFFECT THROUGH THURSDAY EVENING… Rapid snowmelt and rainfall is expected to lead to significant ponding of water in low lying, poor drainage areas. The added water and the potential for ice jams may lead to significant rises on rivers and streams.  PRECAUTIONARY/PREPAREDNESS ACTIONS… A Flood Watch means there is a potential for flooding based on current forecasts. If you live in ice jam flood prone areas, be aware of potential significant rises on area streams through Thursday. You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.

Nishnabotna River Flood Outlook (near Atlantic) – 3/13/19

Weather

March 13th, 2019 by Ric Hanson

359 AM CDT Wed Mar 13 2019

FLOOD WATCH until this evening. Conditions across the area are primed for flooding potential due to lingering snow pack with 1 to 2 inches or more of water continuing to melt and mostly frozen grounds unable to absorb existing water. River forecasts include observed precipitation, as well as expected precipitation over the next 48 hours. At this time there is limited confidence associated with rainfall amounts and the location of predicted rainfall. If rainfall in the basin is less than predicted, the forecast river stage may not be reached. Conversely, if rainfall is more than predicted the river may crest higher. As the forecast becomes more certain, this watch will be either upgraded to a Flood Warning or canceled.

The Flood Watch continues for The East Nishnabotna River near Atlantic, or From Troublesome Creek near Atlantic…to Indian Creek near Lewis.
* Until this evening.
* At 3:00 AM Wednesday the stage was 11.2 feet, or 7.8 feet below Flood Stage.
* Flood Stage is 19.0 feet.
* No flooding is occurring and Minor flooding is forecast.
* Forecast…rise to Flood Stage this evening. Continue rising to
19.1 feet, or 0.1 feet above Flood Stage, this evening. Then begin
falling and go below Flood Stage this evening.
* There is limited confidence in this river forecast. Forecasts may change so monitor for updated information.

Skyscan Forecast for Atlantic & the area: Wed., March 13, 2019

Weather

March 13th, 2019 by Ric Hanson

Today: *DENSE FOG ADVISORY until 1-p.m.*WIND ADVISORY 10-a.m. to 7-p.m.*FLOOD WATCH through Thursday evening; Fog this morning, Showers & scattered thunderstorms , some may produce heavy rain. High 58. S @ 15-30.

Tonight: Light rain or drizzle. Low 46. S-W @ 10-20.

Tomorrow: Light rain. High nearly steady in the 40’s. NW @ 15-30.

Friday: P/Cldy. High 41.

Saturday: P/Cldy. High 46.

Yesterday’s High in Atlantic was 45. Our Low was 37. 24-hours rainfall at KJAN (through 7-a.m. today) was .36”. Last year on this date our High was 46 and the Low was 16. The record High in Atlantic on this date was 72 in 2012. The Record Low was -11 in 1948 and 1975.

Dense Fog, Wind, and Flood Advisories posted across the region

Weather

March 12th, 2019 by Chris Parks

The National Weather Service has now posted Dense Fog, Wind, and Flood Advisories across the KJAN listening area for the next two days. Here is a look at the rundown of those latest additions to the weather situation in the Nishna Valley.

The National Weather Service in Omaha has issued a

* Flood Advisory for Rapid Rises for Rain and Snowmelt in Mills, Shelby, Monona, Pottawattamie, Montgomery, Fremont, Harrison, and Page Counties in the listening area until 7:45pm on Tuesday.
* At 141 PM CDT, emergency management and storm spotters reported
that snowmelt was causing minor flooding of both rural and urban
roads. This situation will likely become more widespread tonight
into Wednesday as rainfall increases in areal coverage and
intensity. If traveling, be alert to road closures and the
potential for water-covered sections of road. This is especially
the case at night when visibility is reduced.

Audubon-Guthrie-Cass-
…DENSE FOG ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO 7 AM
CDT WEDNESDAY…
…WIND ADVISORY IN EFFECT FROM 10 AM TO 7 PM CDT WEDNESDAY…

Crawford-Carroll-Greene-
…DENSE FOG ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO 7 AM
CDT WEDNESDAY…

Adair-Adams-Union-Taylor-Ringgold
…WIND ADVISORY IN EFFECT FROM 10 AM TO 7 PM CDT WEDNESDAY…

The National Weather Service in Des Moines has issued a Dense Fog
Advisory, which is in effect from 7 PM this evening to 7 AM CDT
Wednesday. A Wind Advisory has also been issued. This Wind
Advisory is in effect from 10 AM to 7 PM CDT Wednesday.

* TIMING…Dense fog advisory tonight, Wind Advisory through the
day Wednesday.

* WINDS…Southeast at 25 to 35 mph gusting to 45 mph Wednesday.

* VISIBILITY…Around 1/4 mile or less tonight.

* IMPACTS…With the recent rain and additional rain expected,
combined with low visibility. Water ponding on roads may be
difficult to see, especially at night. Take it slow when driving,
especially in low-lying areas and in areas of poor drainage.
Gusty winds may make travel difficult for high-profile vehicles
on Wednesday.

Flood Warning issued for West/East Nish & Nodaway Rivers beginning Wed. afternoon

Weather

March 12th, 2019 by Ric Hanson

1058 AM CDT Tue Mar 12 2019

The National Weather Service in Omaha has issued a flood warning for the following rivers in Iowa:

  • West Nishnabotna River at Hancock affecting Pottawattamie County. The Warning is in effect from Wednesday afternoon to Friday evening, or until the warning is cancelled. At 10:00 AM Tuesday the stage was 7.2 feet, or 6.8 feet below flood stage. Flood stage is 14.0 feet. Record flooding is forecast. The river is forecast to rise above flood stage by early tomorrow afternoon and continue to rise to near 26.2 feet by early Thursday morning. The river will fall below flood stage by early Friday morning.
  • –East Nishnabotna River at Red Oak affecting Montgomery County. The Warning is in effect from Wednesday afternoon to Saturday morning, or until the warning is cancelled. At 10:00 AM Tuesday the stage was 11.7 feet, or 6.3 feet below flood stage. Flood stage is 18.0 feet. Moderate flooding is forecast. The river is forecast to rise above flood stage by tomorrow afternoon and continue to rise to near 25.9 feet by early Friday morning. The river will fall below flood stage by Friday afternoon.
  • Nishnabotna River above Hamburg affecting Fremont County. The Warning is in effect from Wednesday afternoon until further notice. At 10:45 AM Tuesday the stage was 17.9 feet, or 7.1 feet below flood stage. Flood stage is 25.0 feet. Moderate flooding is forecast. The river is forecast to rise above flood stage by tomorrow afternoon and continue to rise to near 30.4 feet by early Friday afternoon.
  • West Nishnabotna River At Randolph affecting Fremont County. The Warning is in effect from Wednesday afternoon to Saturday afternoon, or until the warning is cancelled. At 10:00 AM Tuesday the stage was 15.1 feet, or 3.9 feet below flood stage. Flood stage is 19.0 feet. Record flooding is forecast. The river is forecast to rise above flood stage by tomorrow afternoon and continue to rise to near 26.4 feet by early Thursday afternoon. The river will fall below flood stage by Friday evening.
  • Nodaway River at Clarinda affecting Page County. The Warning is in effect from Wednesday morning to Thursday evening, or until the warning is cancelled. At 10:15 AM Tuesday the stage was 14.2 feet, or 8.8 feet below flood stage. Flood stage is 23.0 feet. Minor flooding is forecast. The river is forecast to rise above flood stage by late tomorrow morning and continue to rise to near 25.2 feet by tomorrow evening. The river will fall below flood stage by Thursday morning.

Do not drive cars through areas where water covers the road.  The water depth may be too great to allow your vehicle to pass safely. A Flood Watch is in effect for all of southwest Iowa from Wednesday morning through Thursday evening.

Flood watch continues from Wed. into Thu. morning

Weather

March 12th, 2019 by Ric Hanson

(Updated 4-a.m. 3/12/19) Sac-Crawford-Carroll-Audubon-Guthrie-Dallas-Cass-Adair-Madison-Adams-Union-Taylor-Ringgold Counties...A FLOOD WATCH REMAINS IN EFFECT FROM 7-A.M. WEDNESDAY THROUGH 7-P.M THURSDAY

* Rapid snowmelt and expected rainfall is expected lead to significant rises on rivers and streams and the potential for ice jams.

Monona-Harrison-Shelby-Pottawattamie-Mills-Montgomery-Fremont-
Page CountiesFLOOD WATCH IN EFFECT FROM 1-A.M. WEDNESDAY THROUGH 7-P.M. THURSDAY..

* Warmer temperatures will accompany a strong storm system which will likely produce 1 to 3 inches of rain the next several days. This will heighten the risk of river flooding due to the unusual combination of heavy rain, snowmelt, frozen ground, and thick ice cover on area rivers.

* ADDITIONAL DETAILS…Significant and rapid river level increases are possible due to excessive runoff. Ice jams could also develop which would further enhance the flood threat.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A Flood Watch means there is a potential for flooding based on current forecasts.

You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take quick action should flooding develop.

Skyscan Forecast – Tuesday, March 12th, 2019

Weather

March 12th, 2019 by Ric Hanson

Today: Mostly cloudy w/light rain. High 45. SE @ 15-25.

Tonight: Cloudy w/rain. Low 43. S @ 10-20.

Tomorrow:**FLOOD WATCH from 7-a.m. Wed. through 7-a.m. Thu.**  P/Cldy to Cldy w/showers & scattered thunderstorms. High 58. S @ 15-30.

Thursday: Mo. Cldy with light rain. High 42.

Friday: P/Cldy. High 40.

Yesterday’s High in Atlantic was 43. Our Low was 21. Last year on this date our High was 49 and the Low was 21. The record High in Atlantic on this date was 74 in 1938. The Record Low was -21 in 1998.

 

Flood Watch expanded for entire KJAN listening area

Weather

March 11th, 2019 by Chris Parks

The National Weather Service has now expanded the Flood Watch region to include the entire KJAN listening area later this week. depending on your exact location the watch will go into effect Tuesday night or Wednesday morning and continue into Thursday night.

From Wednesday morning through Thursday evening

* Rapid snowmelt and expected rainfall will lead to significant
rises on rivers and streams and the possibility of ice jams as
well.

* Favored ice jam locations include the Des Moines River around
Fort Dodge, the Raccoon River around Van Meter through Des
Moines to the confluence of the Des Moines River, and the Iowa
River around Marshalltown. Other locations are possible for ice
jam flooding. Minor to moderate river flooding from snowmelt and
rainfall is possible in some locations.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A Flood Watch means there is a potential for flooding based on
current forecasts.

You should monitor later forecasts and be alert for possible
Flood Warnings. Those living in areas prone to flooding should be
prepared to take action should flooding develop.