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Hazardous Weather Outlook for parts of western/southwest IA 9/7/15

Weather

September 7th, 2015 by Ric Hanson

HARRISON-SHELBY-POTTAWATTAMIE-MILLS-MONTGOMERY-FREMONT-PAGE COUNTIES…
500 AM CDT MON SEP 7 2015

TODAY AND TONIGHT: SEVERE THUNDERSTORMS PRODUCING LARGE HAIL AND DAMAGING WINDS ARE POSSIBLE LATER THIS AFTERNOON AND EVENING. HEAVY RAIN IS LIKELY OVERNIGHT…WITH FLASH FLOODING POSSIBLE. A FLASH FLOOD WATCH IS POSTED.

THE COLD FRONT THAT MOVED THROUGH THE AREA AND TRIGGERED
THUNDERSTORMS SUNDAY NIGHT IS FORECAST TO LIFT BACK NORTH INTO
SOUTHEAST NEBRASKA AND SOUTHWEST IOWA LATER TODAY AND TONIGHT. HIGH INSTABILITY AND MODERATE SHEAR WILL CONTRIBUTE TO THE SEVERE STORM POTENTIAL DURING THE LATE AFTERNOON AND EVENING. ALSO…ABUNDANT ATMOSPHERIC MOISTURE COMBINED WITH EXPECTED TRAINING OF THUNDERSTORMS OVERNIGHT WILL LEAD TO HEAVY RAINFALL AND FLASH FLOODING…ESPECIALLY IN AREAS THAT RECEIVED HEAVY RAIN SUNDAY NIGHT.

TUESDAY THROUGH SUNDAY: THERE IS A CHANCE FOR THUNDERSTORMS ON TUESDAY AS AN UPPER LEVEL LOW PRESSURE SYSTEM MOVES THROUGH THE AREA. ISOLATED THUNDERSTORMS ARE AGAIN POSSIBLE TUESDAY NIGHT THROUGH WEDNESDAY NIGHT.

SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED LATER THIS AFTERNOON AND EVENING.

Flash Flood Watch/Warning updates 5-a.m. 9/7/15

Weather

September 7th, 2015 by Ric Hanson

The Flash Flood Watch that was in effect for most the KJAN listening area until 10-am today has been cancelled, with the exception of Adams Union Taylor and Ringgold Counties. A Flash Flood Watch will be in effect this evening beginning at 7 o’clock and running through 7-a.m. Tuesday, for Cass-Adair-Adams-Audubon-Guthrie-Dallas-Fremont-Harrison-Mills-Montgomery-Page-Pottawattamie-Shelby-Union-Taylor-Ringgold Counties.

Counties in dark green are under a Flash Flood Watch; Light green: Flood Warning; Counties in dark red: Flash Flood Warning.

Counties in dark green are under a Flash Flood Watch; Light green: Flood Warning; Counties in dark red: Flash Flood Warning.

The National Weather Service says showers and thunderstorms with potentially heavy flash flooding will continue early this morning, but should diminish toward midday. The overall flash flooding potential will not end by then, however. More showers and thunderstorms with heavy rain are expected again tonight. Rainfall amounts may reach one-to three-inches, with locally higher amounts possible. And, with soils already saturated in many areas, more flash flooding may occur.

A Flood Warning remains in effect until 2-a.m. Tuesday for northern Audubon, Dallas, and Guthrie Counties, along with southeastern Carroll County.

NWS forecast for Atlantic & the KJAN listening area, 9/7/15

Weather

September 7th, 2015 by Ric Hanson

A FLASH FLOOD WATCH continues until 10-a.m. today for Adair-Adams-Audubon-Cass-Dallas-Guthrie-Madison-Ringgold-Taylor and Union Counties in our listening area.  A FLOOD WARNING is in effect until 2-a.m. Tuesday for northern Guthrie, southeastern Carroll, northern Audubon and northern Dallas Counties.

Today (Labor Day): A 40 percent chance of showers and thunderstorms, mainly after 3pm. Mostly cloudy, with a high near 83. Northeast wind 6 to 10 mph becoming east southeast in the afternoon. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight: Showers and thunderstorms. Some of the storms could produce heavy rain. Low around 67. East southeast wind 3 to 7 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Tuesday: A 50 percent chance of showers and thunderstorms. Some of the storms could produce heavy rain. Mostly cloudy, with a high near 78. Light and variable wind becoming north 5 to 8 mph in the morning. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tuesday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 55. North wind around 7 mph.
Wednesday: Sunny, with a high near 76.
Thursday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 76.

Flood Warning until 2-a.m. Tuesday for parts of Guthrie & Audubon Counties

Weather

September 7th, 2015 by Ric Hanson

311 AM CDT MON SEP 7 2015

FLOOD WARNING FOR NORTHERN GUTHRIE COUNTYSOUTHEASTERN CARROLL COUNTY … GREENE COUNTY.. NORTHERN AUDUBON COUNTY … BOONE COUNTY… NORTHERN DALLAS COUNTY UNTIL 2-a.m. TUESDAY.

THE HEAVY RAIN HAS ENDED BUT WIDESPREAD FLOODING IS STILL BEING REPORTED…ESPECIALLY ACROSS NORTHERN GUTHRIE COUNTY.

HIGHWAY 141 IS CLOSED DUE TO FLOODING BETWEEN COON RAPIDS AND HIGHWAY 4. HIGHWAY 25 IS CLOSED AROUND BAYARD DUE TO FLOODING. DETOURS ARE IN PLACE FOR BOTH LOCATIONS.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. TURN AROUND…DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD DEATHS OCCUR IN VEHICLES.

 

Flash Flood Warning: Audubon & Guthrie Counties

Weather

September 6th, 2015 by Ric Hanson

912 PM CDT SUN SEP 6 2015

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* FLASH FLOOD WARNING FOR…

NORTHERN GUTHRIE COUNTY IN WEST CENTRAL IOWA…

SOUTHEASTERN GREENE COUNTY IN WEST CENTRAL IOWA…

NORTHERN AUDUBON COUNTY IN WEST CENTRAL IOWA…

SOUTHWESTERN BOONE COUNTY IN CENTRAL IOWA…

NORTHWESTERN DALLAS COUNTY IN CENTRAL IOWA…

* UNTIL 315 AM CDT MONDAY

* AT 910 PM CDT…DOPPLER RADAR AND AUTOMATED RAIN GAUGES INDICATED THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. UP TO THREE INCHES OF RAIN HAVE ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY. 3.1 INCHES OF RAIN HAS FALLEN IN COON RAPIDS SINCE AROUND AN HOUR.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE…

PERRY…AUDUBON…LAKE PANORAMA…BAYARD…MINBURN…BAGLEY…

RIPPEY…YALE…JAMAICA…DAWSON…GRAY…BERKLEY…SPRINGBROOK

STATE PARK…PERRY MUNICIPAL AIRPORT AND LAKIN SLOUGH GAME

MANAGEMENT AREA. THE FOLLOWING STREAMS AND CREEKS WILL BE

AFFECTED AS WELL…WILLOW CREEK…BRUSHY CREEK…AND BEAVER CREEK.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. TURN AROUND…DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD DEATHS OCCUR IN VEHICLES.

 

Shelby County Thunderstorm warning update

Weather

September 6th, 2015 by Ric Hanson

650 PM CDT SUN SEP 6 2015

…A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM CDT FOR SHELBY COUNTY…

AT 650 PM CDT…A SEVERE THUNDERSTORM WAS LOCATED OVER IRWIN…OR 14 MILES NORTHWEST OF AUDUBON…MOVING NORTHEAST AT 30 MPH.

HAZARD…60 MPH WIND GUSTS AND QUARTER SIZE HAIL.

SOURCE…RADAR INDICATED.

IMPACT…HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO ROOFS…SIDING AND TREES.

LOCATIONS IMPACTED INCLUDE…

HARLAN…SHELBY…EARLING…IRWIN…DEFIANCE…PANAMA…PORTSMOUTH…

WESTPHALIA…TENNANT…KIRKMAN…NISHNA BEND RECREATION AREA…ELK HORN CREEK RECREATION AREA AND PRAIRIE ROSE STATE PARK. THIS INCLUDES HIGHWAY 59 IN IOWA BETWEEN MILE MARKERS 67 AND 89.

 

Severe Thunderstorm Warning: Shelby County

Weather

September 6th, 2015 by Ric Hanson

630 PM CDT SUN SEP 6 2015

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR SHELBY COUNTY UNTIL 715 PM CDT

* AT 630 PM CDT…A SEVERE THUNDERSTORM WAS LOCATED NEAR HARLAN…OR 20 MILES WEST OF AUDUBON…MOVING NORTHEAST AT 25 MPH.
HAZARD…60 MPH WIND GUSTS AND QUARTER SIZE HAIL.
SOURCE…RADAR INDICATED.
IMPACT…HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE
TO ROOFS…SIDING AND TREES.

* LOCATIONS IMPACTED INCLUDE…
HARLAN…SHELBY…EARLING…IRWIN…DEFIANCE…PANAMA…
PORTSMOUTH…WESTPHALIA…TENNANT…KIRKMAN…NISHNA BEND
RECREATION AREA…ELK HORN CREEK RECREATION AREA AND PRAIRIE ROSE STATE PARK.
THIS INCLUDES HIGHWAY 59 IN IOWA BETWEEN MILE MARKERS 67 AND 89.

Severe Thunderstorm Watch for Cass & area Counties until 1-a.m. Monday

Weather

September 6th, 2015 by Ric Hanson

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 504 IN EFFECT UNTIL 1 AM CDT MONDAY FOR THE FOLLOWING COUNTIES: ADAIR-ADAMS-AUDUBON-CASS-CARROLL-CRAWFORD- GUTHRIE-MADISON-RINGGOLD-SAC-TAYLOR AND UNION.

PROBABILITY TABLE:
PROB OF 2 OR MORE TORNADOES : 10%
PROB OF 1 OR MORE STRONG /F2-F5/ TORNADOES : 02%
PROB OF 10 OR MORE SEVERE WIND EVENTS : 40%
PROB OF 1 OR MORE WIND EVENTS 75 MPH : 10%
PROB OF 10 OR MORE SEVERE HAIL EVENTS : 60%
PROB OF 1 OR MORE HAIL EVENTS 2 INCHES : 30%
PROB OF 6 OR MORE COMBINED SEVERE HAIL/WIND EVENTS : 80%
MAX HAIL /INCHES/ : 2.0
MAX WIND GUSTS SURFACE /MPH/ : 70

NWS forecast for Atlantic & the KJAN listening area, Sun. 9/6/15

Weather

September 6th, 2015 by Ric Hanson

Today: A 40 percent chance of showers and thunderstorms, mainly after 3pm. Partly sunny, with a high near 91. Heat index values as high as 101. Breezy, with a south wind 13 to 17 mph, with gusts as high as 23 mph. New rainfall amounts between a quarter and half of an inch possible.

**Flash Flood Watch in effect from 7-p.m. Sunday until 10-a.m. Monday**

Tonight: Showers and thunderstorms. Some of the storms could produce heavy rain. Low around 69. South wind 5 to 8 mph becoming light and variable in the evening. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

Labor Day: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 81. Light and variable wind becoming east northeast 5 to 8 mph in the morning. New rainfall amounts between a half and three quarters of an inch possible.

Monday Night: Showers and thunderstorms. Some of the storms could produce heavy rain. Low around 66. East southeast wind 3 to 7 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.

Tuesday: Showers and thunderstorms likely. Mostly cloudy, with a high near 78. East northeast wind 3 to 8 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Tuesday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 57.

Wednesday: Sunny, with a high near 77.

FLASH FLOOD WATCH issued for parts of west central/central Iowa

Weather

September 6th, 2015 by Ric Hanson

AREA COUNTIES: AUDUBON; GUTHRIE; DALLAS; CASS; ADAIR; MADISON; ADAMS; UNION; TAYLOR AND RINGGOLD.

Counties in green are included in a Flash Flood  Watch.

Counties in green are included in a Flash Flood Watch.

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A FLASH FLOOD WATCH FROM THIS EVENING THROUGH MONDAY MORNING. NUMEROUS THUNDERSTORMS PRODUCING WIDESPREAD 1 TO 3 INCHES OF RAINFALL ARE EXPECTED WITH LOCALLY HIGHER AMOUNTS IN EXCESS OF 5 INCHES POSSIBLE.

THE HEAVY RAINFALL MAY LEAD TO FLASH FLOODING DUE TO RAPID RISES ALONG SMALL STREAMS AND CREEKS. IN ADDITION…SIGNIFICANT PONDING OF WATER MAY OCCUR.

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.