Best Flood Alerts Apps

243+ iOS apps curated and reviewed

4.7 avg rating
20 free apps
Updated August 2026

Every iPhone needs a few good flood alerts apps. We benchmark 243+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.

Compare top Flood Alerts Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Flood Alert WatcherFlood Alert WatcherFree4.8★ (5)YesYesJul 2026
2PegelAlarm: Flood & Rain alertPegelAlarm: Flood & Rain alertFreeNoYesJul 2026
3FEMAFEMAFree3.7★ (1K)NoNoAug 2026
4Weather Alerts: Radar TrackerWeather Alerts: Radar TrackerFree4.5★ (11)YesYesAug 2026
5The Weather Channel - RadarThe Weather Channel - RadarFree4.8★ (6M)YesYesAug 2026
6GaugeStage: Water LevelsGaugeStage: Water LevelsFree4.4★ (14)YesYesAug 2026
7Future Flood PredictorFuture Flood PredictorFree5.0★ (1)NoNoJun 2026
8Emergency: Severe Weather AppEmergency: Severe Weather AppFree4.8★ (7.2K)NoNoAug 2026

Top Picks for Flood Alerts

Flood Alert Watcher#1

Flood Alert Watcher by John Benson

Flood Alerts & Warnings
Editor's Choice
☀️ Weather
4.8(5 ratings)
FreeAdsIn-App Purchases
Flood Alert Watcher screenshot 1
Flood Alert Watcher screenshot 2
Flood Alert Watcher screenshot 3
Flood Alert Watcher screenshot 4
Flood Alert Watcher screenshot 5
Flood Alert Watcher screenshot 6

Receive real-time flood alerts and weather warnings for the UK. View interactive flood maps, understand warning levels, and get peace of mind with trusted data from the Environment Agency.

PegelAlarm: Flood & Rain alert#2

PegelAlarm: Flood & Rain alert by SOBOS GmbH

Water Level & Emergency alarm
Strong Contender
☀️ Weather
0.0(0 ratings)
FreeIn-App Purchases
PegelAlarm: Flood & Rain alert screenshot 1
PegelAlarm: Flood & Rain alert screenshot 2
PegelAlarm: Flood & Rain alert screenshot 3
PegelAlarm: Flood & Rain alert screenshot 4
PegelAlarm: Flood & Rain alert screenshot 5
PegelAlarm: Flood & Rain alert screenshot 6

This app provides real-time water levels and forecasts from over 30,000 measuring points worldwide. It alerts users to critical water levels, helping them prepare for potential floods and other water-related emergencies.

FEMA#3

FEMA by Federal Emergency Management Agency (FEMA)

Worth Considering
☀️ Weather
3.7😊(1K ratings)
Free
#26in Weather
FEMA screenshot 1
FEMA screenshot 2
FEMA screenshot 3
FEMA screenshot 4
FEMA screenshot 5
FEMA screenshot 6

This app provides essential tools and information for disaster preparedness, safety, and recovery. Receive real-time alerts, access guidance on emergency plans and kits, and find information on disaster assistance.

What We Love

  • 🚀 Accurate and timely weather alerts
  • 👍 Helpful preparedness information
  • 🚨 Essential for emergency situations
  • ⚠️ Valuable real-time updates

Room to Improve

  • 🔁 Repetitive and excessive notifications
  • 🔍 Difficulty finding/accessing alerts
  • 🐛 Bugs causing app crashes or issues

More Flood Alerts apps to explore

4
Weather Alerts: Radar Tracker
Weather Alerts: Radar Tracker
Weather Alerts: Radar Tracker
Custom & Severe Weather alerts
Free

Receive custom, real-time weather alerts for various conditions like temperature, precipitation, and wind. This advanced radar tracker uses server-side monitoring to optimize battery life and deliver push notifications only when necessary, keeping you informed without constant checking.

Customizable weather alertsServer-side tracking for battery optimizationReal-time push notifications
☀️ Weather
(11)
free with in-app purchases
5
The Weather Channel - Radar
The Weather Channel - Radar
The Weather Channel - Radar
Storm Alerts, Lightning, Rain
Free

Get accurate daily and hourly weather forecasts, including severe storm alerts and air quality index. Plan up to 15 days in advance with personalized weather tracking and live radar maps.

Daily and hourly forecastsLive Doppler radar mapsSevere weather alerts
☀️ Weather
(6M)
free with in-app purchases
6
GaugeStage: Water Levels
GaugeStage: Water Levels
GaugeStage: Water Levels
River Levels & Flood Alerts
Free

Track real-time water levels for over 12,000 rivers and streams nationwide. Get flood alerts, monitor conditions, and plan boating or fishing trips with confidence. Access NOAA data and an interactive map to find gauges easily.

Real-time water level trackingFlood alerts and warningsInteractive map view
🗺️ Navigation
(14)
freemium
7
Future Flood Predictor
Future Flood Predictor
Future Flood Predictor
Real-time flood prediction
Free

This application provides real-time, localized flood risk assessments using data from NASA satellites and weather stations. It offers instant risk level indicators and critical alerts to help users stay informed and safe during changing weather conditions.

Real-time flood risk levelsNASA-powered data accuracyCritical flood alerts
☀️ Weather
(1)
free
8
Emergency: Severe Weather App
Emergency: Severe Weather App
Emergency: Severe Weather App
Alerts, Maps, Radar & Shelters
Free

Stay safe during extreme weather and disasters with real-time alerts, interactive preparedness guides, and essential tools. This app provides official weather notifications, live maps, and helps locate shelters and services when you need them most.

Real-time severe weather alertsInteractive preparedness guidesPersonalized checklists
☀️ Weather
(7.2K)
free with in-app purchases
9
AngelsAlert
AngelsAlert
AngelsAlert
Wildfire, Flood & Disaster Map
Free
$3.99 | 100% OFF

Receive real-time alerts for wildfires, floods, earthquakes, and severe weather. This app provides early warnings powered by NASA, USGS, and the National Weather Service, along with community-sourced reports and evacuation route guidance.

Wildfire detection via NASA FIRMSFlood and river level monitoringEarthquake alerts with magnitude
☀️ Weather
(6)
subscription
10
Watch Duty: Wildfire & Floods
Watch Duty: Wildfire & Floods
Watch Duty: Wildfire & Floods
Fire & Flood Maps and Alerts
Free

Get real-time wildfire information and alerts powered by a dedicated team of first responders and reporters. Receive immediate updates on fire perimeters, evacuation orders, and firefighting efforts, going beyond delayed government alerts to keep you informed and safe.

Real-time wildfire mapsPush notifications for nearby firesActive fire perimeters
📡 News
(50K)
free with in-app purchases
11
Flood Early Warning
Flood Early Warning
Flood Early Warning
by Shannon Clarke
Free
☀️ Weather
(0)
12
NOAA Alerts Weather
NOAA Alerts Weather
NOAA Alerts Weather
Real-time NOAA weather alerts
Free

Receive real-time weather warnings, watches, and hurricane information directly on your iPhone and iPad. This service provides alerts as soon as they are issued by federal agencies, with options to save favorite stations and access offline aviation observations.

Real-time NOAA weather alertsHurricane informationSearch by State, Zone, County, Code
☀️ Weather
(15)
free with in-app purchases
13
FloodRoute
FloodRoute
FloodRoute
Real-time road flooding risks
Free

This app provides real-time estimations of flood-prone streets in coastal communities using various data sources. It helps users plan safer routes by showing which roads may flood during high tides and offering "what if" scenarios.

Real-time flood risk indicatorHigh tide countdown timerFlood alerts and notifications
🗺️ Navigation
(12)
free with in-app purchases
14
RiverAware
RiverAware
RiverAware
Monitor River Levels & Floods
Free

Access real-time river levels, flood alerts, and accurate forecasts from over 13,000 stations nationwide. Monitor your favorite rivers, receive custom notifications, and stay informed with severe weather news.

Real-time river and coastal station dataInteractive map with color-coded pinsUp to 3 months of water-level history
☀️ Weather
(8)
freemium
15
Flood Report
Flood Report
Flood Report
by Matt Shapiro
Free
☀️ Weather
(0)
16
HydraAtlas
HydraAtlas
HydraAtlas
Flood Awareness and Safety
Free

This app provides detailed flood risk information for any US location using official FEMA data. It offers real-time updates on stream gauges, weather alerts, and radar, helping users make informed decisions about potential flood hazards.

FEMA flood zone mappingUSGS stream gauge readingsNational Weather Service alerts
🔧 Utilities
(2)
free
17
Weather & Radar
Weather & Radar
Weather & Radar
4-Day Radar Forecast
Free

Stay informed with accurate hourly and daily weather forecasts, including detailed radar maps for rain, snow, and lightning. Receive personalized alerts, track air quality, and get specialized information for winter sports and coastal conditions.

Hourly & daily weather forecastAll-in-one weather mapsRain, snow, wind, lightning radar
☀️ Weather
(304K)
free with in-app purchases
18
FloodWatch
FloodWatch
FloodWatch
Real-time river and flood data
Free

Monitor real-time river and flood data across the United States. Track river height, discharge, precipitation, and water temperature with data from USGS and NWS. Ideal for property owners, outdoor enthusiasts, and anyone needing flood awareness.

Real-time river dataHistorical trends and graphsFavorites list for gauges
☀️ Weather
(280)
free with in-app purchases
19
Rivercast: River Levels USA
Rivercast: River Levels USA
Rivercast: River Levels USA
NOAA Forecasts & Flood Alerts
Free

Monitor river levels, flow rates, and flood warnings with real-time data and forecasts. Get custom alerts for your favorite waterways and visualize trends with interactive graphs. Essential for anyone living, working, or recreating near water.

Official flood warnings and alertsRiver stage height and flow rateColor-coded river status indicators
☀️ Weather
(11K)
free with in-app purchases
20
AIoT - Based Flood Warning
AIoT - Based Flood Warning
AIoT - Based Flood Warning
AIoT-Flood Warning System_DATS
Free
☀️ Weather
(0)

FAQ about Flood Alerts

What are the best flood alerts apps for iPhone?
Flood Alert Watcher tops our flood alerts apps ranking as of August 2026, with a 4.8-star average from 5 App Store ratings, and it's free to download.
Yes — 20 of the top flood alerts apps we rank are free to download, including Flood Alert Watcher and PegelAlarm: Flood & Rain alert.
Flood Alert Watcher shows ads and offers in-app purchases, according to its App Store listing as of August 2026.
We track 243+ flood alerts apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
Flood Alert Watcher provides real-time flood alerts and weather warnings for the UK. It features interactive maps and data directly from the Environment Agency to keep users informed about potential flood risks.
Flood Alert Watcher uses three warning levels: Alert, Warning, and Severe. The app displays the number of active alerts for each level and allows users to tap for detailed information.