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Linn County, IA Weather and Climate Synopsis

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Weather Summary for Iowa
National Weather Service Des Moines IA
453 PM CST Mon Feb 19 2018

A wintery mix of precipitation was noted across Iowa this afternoon.
Dense fog and some light rain was reported over east central Iowa
while periods of rain occurred over the southeast third to half of 
the state. across the northwest, periods of light freezing rain was 
reported. Temperatures ranged from the lower to mid 20s across the 
west and north to the mid to upper 40s across the southeast. A west to
northwest wind at 10 to 15 mph was common across the state. 

The region will remain in an active pattern for this week. Round two
of the storm system impacting the region today will come tonight and
Tuesday. Showers and thunderstorms with heavy rain will occur across
southeast portions of the Upper Midwest while further northwest,
periods of freezing rain or drizzle will be the main impact to the
area depositing up to a quarter inch of ice and making for treacherous
travel and some potential for broken tree limbs and downed power lines
in the heavier ice accumulations.  

A brief break will come on Wednesday before another system impacts
the region on Wednesday night and Thursday bringing another chance for
freezing rain or freezing drizzle and some snow to northern areas.
Then after a brief break Friday, another system will move across the
area Friday night and Saturday. Highs will be on the cool side with
20sand 30s expected although late in the week, some moderation into 
the 30s and 40s will be possible. Lows will be in the single digits 
and teens moderating into the upper teens to lower 30s. 

National Ag. Weather Outlook, International Ag. Weather Summary
Current Surface Map, [2nd Source TWC]

Precision Agriculture Weather Forecast For LINN County


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Regional Hourly Observations For LINN County
Issued at 900 PM CST MON FEB 19 2018

   NORTHEAST IOWA
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CEDAR RAPIDS   FOG       36  35  96 W10       29.77R VSB 1   WCI  28  
CHARLES CITY * CLOUDY    32  32 100 N12       29.77R FOG     WCI  23  
CLINTON *      LGT RAIN  45  45 100 MISG        N/A  VSB 1/4          
DECORAH *      FOG       36  36 100 N6        29.74R VSB 1/2 WCI  31  
DUBUQUE        FOG       37  36  96 SW7       29.74R VSB 1/4 WCI  32  
MONTICELLO *   FOG       39  39 100 SW7       29.76R VSB 1/4 WCI  34  
OELWEIN *      FOG       34  34 100 SW8       29.76R VSB 1/4 WCI  27  
WATERLOO       FOG       33  33 100 W5        29.77R VSB 1   WCI  29  

Current Temperatures, Dewpoint, RH, Wind, Regional Obs, Surface 4-Panel


Current Agricultural Weather Conditions in Iowa
Based on observations at 900pm CST, Monday February 19, 2018

Across Iowa...temperatures are near 19 degrees west, near 28 degrees central, and near 47 degrees east. Current sky conditions are cloudy west, cloudy central, and cloudy east. In the west, relative humidity is near 88%, and the dew point is near 16 degrees. In the central part of the state, relative humidity is near 92%, and the dew point is near 26 degrees. In the east, relative humidity is near 90%, and the dew point is near 44 degrees. There is patchy fog central. Winds are from the north at 12 mph west, where conditions are favorable for spraying. The wind chill is near 7 degrees west. Winds are from the northwest at 13 mph central, where conditions are not favorable for spraying due to strong winds. The wind chill is near 17 degrees central. Winds are from the west at 10 mph east, where conditions are favorable for spraying. The livestock cold stress index is in the no stress category west, no stress category central, and no stress category east. Based on current available observations, the highest temperature is 51 degrees at Quad Cities. The lowest temperature is 18 degrees at Estherville.


Current NOWCAST not available:
Nowcasts are not issued routinely during fair weather. Only when
precipitation or other significant weather is occuring in this county will these
forecasts be issued. Currently, there is no short term forecast in effect.

US Radar, All NWS Radars (In near-real time), Current Livestock Heat Stress Index (LSI), Current Wind Chill Map
Hazardous Weather Outlook For LINN County,IA

550 PM CST Mon Feb 19 2018

 DAY ONE  TONIGHT

Showers and isolated thunderstorms will continue through the
overnight hours. The strongest storms will produce heavy rain and
possibly some small hail. Ponding water and flooding along small 
streams are also possible due to the frozen ground. 

Dense fog with visibilities less than one quarter mile will 
linger over east central Iowa into northwest Illinois overnight 
and a dense fog advisory is in effect. 

Freezing rain is expected tonight northwest of a line from 
Manchester to Belle Plaine. Ice accumulations up to one tenth of 
an inch will be possible and a winter weather advisory is in 
effect. 

 DAYS TWO THROUGH SEVEN  TUESDAY THROUGH SUNDAY

There will be a potential for more freezing rain Tuesday morning 
northwest of a line from Manchester to Belle Plaine.

Locally heavy rainfall is possible Tuesday. The area most at risk
is along and east of the Mississippi River. Flooding along streams
and water on roads from rain filled ditches is possible. River
flooding is possible along the Rock River this week, and a flood
watch is in effect at Moline, Joslin, and Como.

Tuesday afternoon and night rain will change to snow and end from
northwest to southeast. A period of freezing rain or sleet is
expected during the transition to snow.

 SPOTTER INFORMATION STATEMENT  

Spotter activation is not expected tonight. However reports of 
rainfall amounts greater than one inch, minor flooding, and 
freezing rain are appreciated.

NWS Severe Weather Map , Convective Outlook


7-Day Forecast For LINN County, IA
757 PM CST Mon Feb 19 2018


DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CST TUESDAY

TONIGHT
Scattered rain showers early in the evening, then periods of rain showers in the late evening and overnight. Widespread dense fog through the night. Low in the lower 30s. West wind 5 to 10 mph shifting to the east after midnight. Chance of showers near 100 percent.

TUESDAY
Cloudy. Widespread dense fog in the morning. Light rain in the morning, then a chance of light rain possibly mixed with freezing rain in the afternoon. High in the upper 30s. Northwest wind 10 to 15 mph. Chance of precipitation 90 percent.

TUESDAY NIGHT
Colder. Mostly cloudy. Low around 13. Northwest wind 10 to 20 mph with gusts to around 25 mph. Wind chill readings to 1 below.

WEDNESDAY
Colder. Mostly sunny. High in the upper 20s. North wind 10 to 15 mph. Wind chill readings to 2 below in the morning.

WEDNESDAY NIGHT
Partly cloudy in the evening then becoming mostly cloudy. Low around 17. Northeast wind 5 to 10 mph.

THURSDAY
Mostly cloudy. A chance of snow possibly mixed with rain in the afternoon. High in the mid 30s. Chance of precipitation 30 percent.

THURSDAY NIGHT
Not as cold. Snow likely possibly mixed with rain in the evening, then snow likely after midnight. Low in the upper 20s. Chance of precipitation 70 percent.

FRIDAY THROUGH SATURDAY
Mostly cloudy. High in the lower 40s. Low in the lower 20s.

SATURDAY NIGHT
Mostly cloudy. Rain possibly mixed with snow in the evening, then snow likely after midnight. Low in the mid 20s. Chance of precipitation 70 percent.

SUNDAY THROUGH MONDAY
Partly cloudy. High in the lower 40s. Low in the lower 20s.

12-48 Hr Surface Forecast Maps, TWC 4-Panel Surface Forecast, Fire Danger, Day 1 Precip, Day 2 Precip, Days 1-5 Precip, Severe Weather Pot.-Day 1, Day 2


Medium & Long Range Outlook For Iowa
                                 IOWA                                                                     
                 ---------------------------------------------
                 6 TO 10 DAY  8 TO 14 DAY   30 DAY    90 DAY 
                FEB 25-MAR 1 FEB 27-MAR 5    MAR       MAR-MAY                      
                 -----------  -----------  --------  ---------
   Temperature:      Above       Normal      Below     Normal                      
 Precipitation:      Above        Above     Normal      Above                      

....  Medium and long range outlooks provided by NCEP/K. Thomas Priddy
5 Day Rainfall Forecast, 6 to 10 Day , 8 to 14 Day , Text, 30-Day Outook, 90-Day Outook, 120-Day Outlook
Almanac Information

Monday February 19, 2018 the 50th Day of Year

---------------------------------------------------
SUN
Declination -10.910000
Distance 0.999723 AU
Rise 08:03 EST Set 18:53 EST
Transit Meridian 13:27 EST
Civil Twilight Begins 07:36 EST Ends 19:20 EST

Calculations made for central point in the state.
Time in ET -- and will vary due to location and
elevation -- Priddy


Historical Weather And Climate Facts For Today

FEBRUARY 19TH
HISTORIC WEATHER EVENTS
...1871...
A. Lapham, in Cincinnati, wrote the first public weather forecast.
...1884...
Severe thunderstorms spawned sixty tornadoes in the southeastern U.S.,
killing more than 420 persons and causing three million dollars damage.
Georgia and the Carolinas hardest were hit in the tornado outbreak. (David
Ludlum)
...1888...
A tornado struck Mount Vernon IL. The tornado killed sixteen persons along
its 62 mile path. (David Ludlum)
...1954...
High winds across the southern half of the Great Plains, gusting to 85 mph,
caused the worst duststorms since the 1930s. Graders were needed in places
to clear fence high dirt drifts. (The Weather Channel)

Ag Weather Center, Department of Biosystems & Agricultural Engineering, University of Kentucky