Johnson County Homeland Security & Emergency Management Agency - Iowa

06/07/2026

Showers and storms continue to slowly move northward this morning. Lightning and locally heavy rainfall have been occurring with these storms, with rain rates up to 1-2 inches per hour. Behind these showers and storms, additional storms are developing. Any areas that see repeated rounds of heavy rain are at risk of flash flooding.

06/07/2026

FLOOD WATCH IN EFFECT THROUGH MONDAY EVENING FOR JOHNSON COUNTY

* WHAT...Flooding caused by excessive rainfall is possible.

* WHEN...Through Monday evening.

* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.

* ADDITIONAL DETAILS

- Exceptionally high amounts of moisture will combine with
persistent lift from an area of low pressure aloft to bring
repeated heavy rain from thunderstorms.

PRECAUTIONARY/PREPAREDNESS ACTIONS

You should monitor later forecasts and be alert for possible Flood
Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.

06/07/2026

Isolated showers and storms are expected this afternoon into tonight. Any storms that develop will be slow moving and have heavy rain, which will lead to locally heavy rainfall. Isolated damaging winds are not out of the question with any storms south of I-80.

06/06/2026

☀️ The HEAT and HUMIDITY is on…and dangerous heat issues can develop faster than people realize.

🥵 As temperatures climb, take a moment to protect yourself and those around you:

• Stay hydrated — drink water before you feel thirsty 💧
• Take breaks in the shade or AC 🌳
• Never leave kids 👶 or pets 🐶 in vehicles 🚗
• Check on neighbors, older adults, and those without cooling 🧑‍🦳
• Know the signs of heat exhaustion and heat stroke 🤒

A few simple steps can save a life.

Stay cool, stay safe, Johnson County.

06/06/2026

Severe Thunderstorm Watch issued June 5 at 9:50PM CDT until June 6 at 3:00AM CDT by NWS Quad Cities IA IL

June 5, 2026 at 21:52:32 CDT
THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 276 IN EFFECT UNTIL 3 AM CDT SATURDAY FOR JOHNSON COUNTY.

Shared from the JoCo Iowa Ready app at https://apps.myocv.com/share/a152650324

06/05/2026

𝗪𝗲𝗮𝘁𝗵𝗲𝗿 𝗢𝘃𝗲𝗿𝘃𝗶𝗲𝘄

Warm, humid air will sustain thunderstorms through the weekend.
Isolated storms this afternoon with low severe risk.

Tonight: storm coverage increases to 50-70%, mainly south of I-80, with a slight severe and flash flood risk.

Saturday and Saturday night: scattered storms, marginal severe risk.

Sunday into Monday: high chances (60-80%) of widespread rain and thunderstorms.

𝗛𝗮𝘇𝗮𝗿𝗱𝘀 𝗮𝗻𝗱 𝗦𝗮𝗳𝗲𝘁𝘆

Expect locally heavy rainfall, damaging winds, hail up to 1.5 inches, and flash flooding.

Stay indoors during thunderstorms; monitor forecasts if camping overnight.

Heavy rain may flood roads and low-lying areas, especially tonight and Sunday night.

06/05/2026

06/04/2026

Strong to severe storms are expected from tonight through Saturday, mainly in eastern Iowa, with threats including damaging winds, hail up to 1.5 inches, brief tornadoes, and flash flooding. Multiple rounds of thunderstorms may cause localized flooding, especially in eastern Iowa. Stay weather-aware, have warning methods ready, and avoid flooded roads.

06/04/2026

Unsettled weather is ahead of us, with warm/humid conditions moving in. We will see shower/storm chances each day, but the best chances will be on Friday and Friday night. A few strong to severe storms are possible through Friday night.

𝙁𝙍𝙄𝘿𝘼𝙔- Rounds of storms are possible on Friday, with plenty of dry time between. We can see early morning storms, scattered afternoon storms, then a more widespread potential overnight. Some storms may be strong to severe, with heavy rain, especially Friday night.

06/03/2026

FYI regarding the local weather radio frequency

https://www.weather.gov/nwr/sites?site=WXL61