Lexington Weather

Lexington, Massachusetts, USA

51°F
4/18/2026 11:05am 
  • Lexington Conditions: Mist, Overcast
  • Temperature: 51.3°F / 10.7°C 
  • Dew Point: 49.8°F 
  • Relative Humidity: 95% 
  • Wind: Calm, 10-min avg: Calm, gust: 1 mph
  • Barometer: 30.10 in Steady
  • Visibility: 5 miles
  • Rain Today: 0.00 in
  •   

Watches, Warnings, and Advisories

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

    FLASH FLOOD WATCH  

Sauk, WI

Flash Flood Watch issued April 18 at 5:41AM CDT until April 19 at 7:00AM CDT by NWS Milwaukee/Sullivan WI

FLASH FLOOD WATCH FOR THE POTENTIAL COMPROMISE OF THE CALEDONIA-LEWISTON LEVEE ON THE WISCONSIN RIVER REMAINS IN EFFECT THROUGH SUNDAY MORNING

Areas Affected: Sauk; Columbia

Urgency: Future

Severity: Severe

Certainty: Possible

Alert Sent: Saturday 5:41am CDT

Alert Effective: Saturday 5:41am CDT

Alert Expires: Saturday 1:45pm CDT (expect updated alert by this time)

Event Onset: Saturday 5:41am CDT

Event Ends: Sunday 7:00am CDT

Issued by: NWS Milwaukee/Sullivan WI

Details: 
...FLASH FLOOD WATCH FOR THE POTENTIAL COMPROMISE OF THE CALEDONIA-LEWISTON LEVEE ON THE WISCONSIN RIVER REMAINS IN EFFECT THROUGH SUNDAY MORNING...

* WHAT...Flash flooding due to the potential compromise of the
Caledonia-Lewiston Levee. The Wisconsin Department of Natural
Resources has indicated that the Calendonia-Lewiston Levee along
the Wisconsin River may become compromised as the river levels
rise. If this takes place, a rapid inundation of water is expected
along the south and west side of the river. The City of Portage is
not anticipated to be impacted by a potential compromise of the
Caledonia-Lewiston Levee.

* WHERE...A portion of south central Wisconsin, including the
following counties, Columbia and Sauk along the south and west
side of the Wisconsin River. Areas affected include, but are not
limited to the Pine Island State Wildlife Area and portions of
Highway 33. The City of Portage is not anticipated to be impacted
by a potential compromise of the Caledonia-Lewiston Levee.

* WHEN...Through Sunday morning.

* IMPACTS...A compromised levee may result in flash flooding of
low-lying areas along the Caledonia-Lewiston Levee.

* ADDITIONAL DETAILS...
- Excessive rainfall over the past several days has resulted in
very high water level on the Wisconsin River.
- http://www.weather.gov/safety/flood

Information: 
PLAN NOW so you will know what to do in an emergency. Keep informed
by listening to local radio and television for statements and
possible warnings. Follow the advice of public safety officials.

Meta data: 
ID: urn:oid:2.49.0.1.840.0.5756583458f6a87e23e975ed190e1385992fe876.001.1
Codes: WIZ056, WIZ057
Link: https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.5756583458f6a87e23e975ed190e1385992fe876.001.1