Warnings, Watches, Advisories, and Outlooks for Lyndon,Illinois
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Hazardous Weather Outlook for Lyndon, Illinois


Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
448 AM CDT Wed Jul 17 2019

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-181000-
Buchanan-Delaware-Dubuque-Benton-Linn-Jones-Jackson-Iowa-Johnson-
Cedar-Clinton-Muscatine-Scott-Keokuk-Washington-Louisa-Jefferson-
Henry IA-Des Moines-Van Buren-Lee-Jo Daviess-Stephenson-Carroll-
Whiteside-Rock Island-Henry IL-Bureau-Putnam-Mercer-Henderson-
Warren-Hancock-McDonough-Scotland-Clark-
448 AM CDT Wed Jul 17 2019

This Hazardous Weather Outlook is for portions of north central
Illinois...northwest Illinois...west central Illinois...east
central Iowa...northeast Iowa...southeast Iowa and northeast
Missouri.

.DAY ONE...TODAY AND TONIGHT


An Excessive Heat Warning is in effect for the entire Outlook
Area starting this afternoon. High heat index readings of 100 to
105 are expected today, with more dangerous values up to 110
degrees expected through the start of the weekend.

Thunderstorms are possible across portions of the Outlook Area
this afternoon, especially west of the Mississippi River. Another
round of thunderstorms are then likley late tonight into early
Thursday morning, especially along and north of Interstate 80.
Severe thunderstorms are possible with damaging winds and flooding
rains the primary threats. An isolated tornado is also possible
especially with any storms that can make it across the area this
afternoon and evening along any surface boundaries. Most of the
Outlook Area is under a Slight Risk for severe weather today and
tonight.

Thunderstorms tonight will be able to produce very heavy rainfall
and at high rates of over an inch an hour. Flash flooding will be
possible, especially for areas that experience repeated storms. A
Flash Flood Watch has been issued for tonight into Thursday
morning for areas generally along and north of the Highway 30
corridor.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY


An Excessive Heat Warning continues in effect for the outlook
area through Saturday. Dangerous heat index readings of 100 to 110
are expected.

Severe thunderstorms are possible early Thursday morning, especially
along and north of Highway 30. The main threats are damaging
winds, frequent lightning, and heavy rainfall with flash flooding
possible.

Additional thunderstorms will be possible late this weekend, as
a cold front moves through bringing an end to the dangerous heat.
At this time, it is too early to determine the risk for severe
weather.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed late this afternoon and tonight
over portions of the outlook area.




Flash Flood Watch for Lyndon, Illinois


Flood Watch
National Weather Service Quad Cities IA IL
400 AM CDT Wed Jul 17 2019

...Flash Flood Threat Tonight...

.Thunderstorms could produce repeated rounds of heavy rainfall
tonight into early Thursday morning which may lead to flash
flooding. Heavy rainfall amounts of 1 to 3 inches will be
possible in the watch area, and the rain may come down at high
rates of over an inch an hour. This kind of rainfall may produce
rapidly rising water along small creeks and streams. Flash
flooding is also possible in urban areas due to high rainfall
rates.

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Buchanan-Delaware-Dubuque-Benton-Linn-Jones-Jackson-Clinton-
Jo Daviess-Stephenson-Carroll-Whiteside-
Including the cities of Independence, Manchester, Dubuque,
Vinton, Cedar Rapids, Anamosa, Maquoketa, Clinton, Galena,
Freeport, Mount Carroll, and Sterling
400 AM CDT Wed Jul 17 2019

...FLASH FLOOD WATCH IN EFFECT FROM THIS EVENING THROUGH THURSDAY

MORNING...

The National Weather Service in Quad Cities has issued a

* Flash Flood Watch for portions of northwest Illinois and Iowa,
including the following areas, in northwest Illinois, Carroll,
Jo Daviess, Stephenson, and Whiteside. In Iowa, Benton,
Buchanan, Clinton, Delaware, Dubuque, Jackson, Jones, and
Linn.

* From this evening through Thursday morning

* Locally heavy rainfall of 1 to 3 inches with rainfall rates of 1
to 2 inches per hour.

* Be prepared for rapidly rising water levels and possible
flooding if you are near a river, stream, or low lying area. Be
ready to move to higher ground if heavy rain develops.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that flash flooding is possible.
Monitor forecasts and take action if flash flood warnings are
issued or flash flooding develops.






Excessive Heat Warning for Lyndon, Illinois


URGENT - WEATHER MESSAGE
National Weather Service Quad Cities IA IL
345 AM CDT Wed Jul 17 2019

...An Extended Period of Heat and Humidity...

.A hot and humid airmass will build across the Midwest starting
today and continuing through Saturday. Temperatures in the 90s
will combine with humidity to push heat induces into the 100 to
110 range, especially from Thursday through Saturday. It is
possible this heat will continue into the late weekend, but
confidence of this remains low at this time.

IAZ040>042-053-054-066-ILZ001-002-007-009-017-018-171645-
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Buchanan-Delaware-Dubuque-Jones-Jackson-Clinton-Jo Daviess-
Stephenson-Carroll-Whiteside-Bureau-Putnam-
Including the cities of Independence, Manchester, Dubuque,
Anamosa, Maquoketa, Clinton, Galena, Freeport, Mount Carroll,
Sterling, Princeton, and Hennepin
345 AM CDT Wed Jul 17 2019

...EXCESSIVE HEAT WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO

7 PM CDT SATURDAY...

The National Weather Service in Quad Cities has issued an
Excessive Heat Warning, which is in effect from 1 PM this
afternoon to 7 PM CDT Saturday. The Excessive Heat Watch is no
longer in effect.

* Heat Index Values...95 to 100 today then ranging from 100 to
110 Thursday through Saturday.

* Timing...This Afternoon through Saturday Evening.

* Impacts...Heat-related illnesses may occur due to the
prolonged period of heat and humidity.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

An Excessive Heat Warning means that a prolonged period of
dangerously hot temperatures and high humidity will occur. This
combination will lead to a dangerous situation in which heat
illnesses are likely. Drink plenty of fluids, stay in an air-
conditioned room, stay out of the sun, and check on relatives and
neighbors, especially the elderly.

Take extra precautions if you work or spend time outside. When
possible, reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear light weight and loose fitting clothing when
possible and drink plenty of water.

To reduce risk during outdoor work the occupational safety and
health administration recommends scheduling frequent rest breaks
in shaded or air conditioned environments. Anyone overcome by
heat should be moved to a cool and shaded location. Heat stroke
is an emergency, call 9 1 1.




Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.

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