Lexington Weather

Lexington, Massachusetts, USA

42°F

4/19/2026 5:39pm

Lexington Conditions: Overcast
Temperature: 42.4°F / 5.8°C
Dew Point: 40.6°F
Relative Humidity: 93%
Wind: NNW 2 mph, 10-min avg: 2 mph, gust: 5 mph
Barometer: 29.78 in Rising Slowly
Visibility: 10 miles
Rain Today: 0.06 in

Flood Warning

Issued by the National Weather Service - Milwaukee/Sullivan, WI

FLOOD WARNING

Jefferson County, WI; Rock County, WI

Flood Warning issued April 19 at 10:26AM CDT by NWS Milwaukee/Sullivan WI

FLOOD WARNING REMAINS IN EFFECT UNTIL FURTHER NOTICE

Areas Affected: Jefferson, WI; Rock, WI

Urgency: Immediate

Severity: Severe

Certainty: Observed

Alert Sent: Sunday 10:26am CDT

Alert Effective: Sunday 10:26am CDT

Alert Expires: Sunday 10:30pm CDT

Event Onset: Sunday 10:26am CDT

Issued by: NWS Milwaukee/Sullivan WI

Details:

...FLOOD WARNING REMAINS IN EFFECT UNTIL FURTHER NOTICE...

...The Flood Warning continues for the following rivers in
Wisconsin...Illinois...

Milwaukee River Near Cedarburg affecting Ozaukee County.

Rock River Near Lake Koshkonong affecting Rock and Jefferson
Counties.

Rock River At Fort Atkinson affecting Jefferson County.

Rock River At Afton affecting Rock and Winnebago Counties.

Rock River At Jefferson affecting Jefferson County.

Rock River At Watertown affecting Jefferson County.

ROCK RIVER near LEBANON-3 E-HWY MM BRIDGE affecting Dodge County.

Fox River Near Berlin affecting Green Lake County.

Crawfish River At Milford affecting Jefferson County.

Fox River Lower At Waukesha affecting Waukesha County.

Fox River Lower Near New Munster affecting Kenosha and Lake
Counties.

Sugar River At Brodhead affecting Rock, Winnebago and Green
Counties.

...The Flood Warning is extended for the following rivers in
Wisconsin...

Pecatonica River At Martintown affecting Green County.

Root River Canal At Raymond affecting Racine County.

...Forecast flooding changed from Moderate to Major severity and
increased in duration for the following rivers in Wisconsin...

Wisconsin River At Portage affecting Columbia County.

* WHAT...Minor flooding is occurring and major flooding is forecast.

* WHERE...Rock River near Lake Koshkonong.

* WHEN...Until further notice.

* IMPACTS...At 11.3 feet, There is knee-deep water over Blackhawk
Island Road. Lamp Road on west side of river also becomes flooded.
Lake Koshkonong merges with Mud Lake to the east of Lake
Koshkonong.

* ADDITIONAL DETAILS...
- At 8:00 AM CDT Sunday the stage was 10.4 feet.
- Bankfull stage is 9.0 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 8:00 AM CDT Sunday was 10.4 feet.
- Forecast...The river is expected to rise to a crest of 11.5
feet early Thursday morning.
- Flood stage is 10.0 feet.
- Flood History...This crest compares to a previous crest of
11.5 feet on 03/25/2019.
- http://www.weather.gov/safety/flood

Information:

Motorists should not attempt to drive around barricades or drive
cars through flooded areas.

Even 6 inches of fast-moving flood water can knock you off your feet
and a depth of 2 feet will float your car. Never try to walk, swim,
or drive through such swift water. If you come upon flood waters,
stop, turn around and go another way.

Additional information is available at www.weather.gov.

The next statement will be issued this evening at 1030 PM CDT.

Meta data:

ID: urn:oid:2.49.0.1.840.0.a52d90822e44232e0844c1d4f21c0f71269f9f98.005.1
Codes: WIC055, WIC105
Link: https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.a52d90822e44232e0844c1d4f21c0f71269f9f98.005.1