Weather Alerts For Lincoln, NE

# HEADLINE -------------------- FLOOD WATCH IN EFFECT FROM 6 PM CDT THIS EVENING THROUGH TUESDAY AFTERNOON # SUMMARY -------------------- .A conditional threat for heavy rain and flash flooding exists this evening into Tuesday morning. A line of thunderstorms is expected to move through the area with potential for at least 1 to 2 inch per hour rainfall rates and training thunderstorms. Areas that received recent heavy rainfall such as far southeast Nebraska will be more susceptible to flooding. # DETAILS -------------------- WHAT Flash flooding caused by excessive rainfall is possible. WHERE Portions of southwest Iowa, including the following counties, Fremont, Mills, Montgomery, Page and Pottawattamie and Nebraska, including the following counties, Cass, Douglas, Gage, Johnson, Lancaster, Nemaha, Otoe, Pawnee, Richardson and Sarpy. WHEN From 6 PM CDT this evening through Tuesday afternoon. IMPACTS Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. ADDITIONAL DETAILS - Recent heavy rainfall combined with potential for repeated rounds of thunderstorms this evening and overnight will lead to a flash flooding threat through at least Tuesday morning. Additional rounds of rainfall will be possible through the remainder of the week. If confidence increases in potential for heavy rain Tuesday night into Wednesday, part or all of the watch may need to be extended. - For flood safety information, visit weather.gov/safety/flood. ISSUED AT Monday, September 14, 2026 at 11:24 AM CDT ISSUED BY National Weather Service Omaha/Valley NE HEADER URGENT - IMMEDIATE BROADCAST REQUESTED | Flood Watch # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. # AREAS AFFECTED -------------------- Cass, Douglas, Fremont, Gage, Johnson, Lancaster, Mills, Montgomery, Nemaha, Otoe, Page, Pawnee, Pottawattamie, Richardson, Sarpy Including the cities of Falls City, Farragut, Pawnee City, Red Oak, Beatrice, Shenandoah, Sidney, Nebraska City, Council Bluffs, Sterling, Clarinda, La Vista, Glenwood, Auburn, Papillion, Hamburg, Tecumseh, Table Rock, Lincoln, Omaha, Tabor, Bellevue, and Plattsmouth

Closest strike: 2.38 miles Stay Alert! Remain in a safe area until there has been no lightning within 10 miles of this location for 30 minutes. Please be aware that lightning activity can remain high even when a storm is moving away from your location. Even if rain has stopped, do not leave your safe area until WeatherBug indicates that lightning is more than 10 miles away from this selected location. IF OUTDOORS Avoid water, high ground, and open spaces. Avoid all metal objects including electric wires, fences, and machinery. Find a safe area in a building or in a fully enclosed vehicle with the windows completely shut. Unsafe places include underneath canopies, small picnic or rain shelters, convertibles, or near trees. IF INDOORS Avoid water and stay away from doors and windows. Avoid using a hard line telephone. Take off headphones. Turn off, unplug, and stay away from appliances, computers, power tools, and TV sets. Lightning may strike exterior electric and phone lines, inducing shocks to inside equipment.

There is a Slight Severe Storm Risk for your location. Continue reading for today's outlook from the National Weather Service's Storm Prediction Center. -------------------- National Severe Storm Outlook THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS NORTHERN KANSAS AND SOUTHERN/EASTERN NEBRASKA INTO WESTERN/CENTRAL IOWA SUMMARY Scattered strong to severe thunderstorms should occur across parts of eastern Nebraska into western/central Iowa this afternoon and evening. Large hail, severe wind gusts, and tornadoes all appear possible. Severe thunderstorm winds will also be possible across northern/western Kansas. 20z Update Visible satellite shows an expansive area of persistent mid-level cloud cover over much of Nebraska and adjacent regions of northwest Kansas and western Iowa. Some attempts at surface-based convection are apparent over portions of south-central Nebraska. Latest surface mesoanalysis shows destabilization is occurring across much of Kansas where skies are clear, with northward advancement now occurring into central/eastern Nebraska as evidenced by 2232 J/kg of MUCAPE in an 18z OAX observed sounding. This trend expected continue into the early evening, with rapid destabilization occurring across southeast Nebraska and southwest Iowa as the low-level jet shifts east and intensifies. An elongated area of convection is still expected to develop, from north-central Kansas into south-central/eastern Nebraska and west-central Iowa, favoring supercell modes early. Despite the noted convective/environmental trends, the exact placement of convective initiation remains uncertain, as exhibited in the most recent HRRR/RRFS runs. Additionally, most guidance continues to suggest a quick transition to mainly clusters/line segments. Therefore, no changes were made in this outlook.

Pollen Index: 9.8 Pollen Level: high Predominant Pollen: Ragweed, Nettle and Chenopods. Pollen concentrations for Tuesday will be falling into the very low range. This lower level is caused by falling temperatures, rising humidity, and heavy rains in the evening which tend to wash pollen out of the air.