FloodRadar
Log inCreate free account

Explore FloodRadar

Explore the map
Weather
Why ?
All rainfall gauges

Rainfall gauge nr St Paul's Walden

St Paul's Walden, Hertfordshire, SG4 8AD
Unavailable
—
Current rate
Updated 68 min ago
There is no reading in the last hour, so the current rainfall rate is unavailable. October has 4.4 mm recorded so far. Observations are incomplete, so a comparison with usual rainfall up to today is unavailable.
—
mm/hr
unavailable
Unavailable
—
1 hour
mm
0% coverage
Unavailable
0
6 hours
mm
79% coverage
Observed total
3.6
24 hours
mm
94% coverage
Observed total
4
7 days
mm
98% coverage
Observed total
4.4
Oct
usual to date: 15.8mm (estimated)
Observed total
374.8
2026
mm
Observed total

Coverage shows valid readings received out of the expected 15-minute observations. Gaps may understate rainfall and are not treated as dry weather.

Water fills show relative rainfall, not flood risk. Hourly cards use rainfall intensity; 24 hours uses recorded wet-day percentiles; longer totals use estimated seasonal pace for the elapsed period. Grey means there is insufficient coverage or history for a comparison.

Ground Wetness
Antecedent conditions based on recent rainfall
14
Dry
of 100
DryNormalDampWetSaturated
3.6mm
3d
4mm
7d
6.8mm
14d
29mm
30d
Conditions are dry. The ground has capacity to absorb rainfall before river levels respond. Antecedent Precipitation Index with exponential decay. Decay rate adjusted for transitional conditions (K=0.92).
24h Weather Forecast
Precipitation -12h / +12h
Rainfall → River Response
Detecting lag...
Shows how rainfall at this gauge translates to river level changes over time. The lag between peak rain and peak river helps predict downstream impact.
Events on this timeline About El Niño

Choose a layer to see recorded events alongside the chart.

Events in this view (0)
    How nearby rivers respond to rainfall here
    Estimated response characteristics based on distance and catchment
    Based on historical data analysis and proximity. This is not an official flood forecast or warning.
    What happened after similar rainfall?

    Explore recorded river changes and compare events after drier or wetter weeks.

    Comparisons use complete past observations, including events with little rise. Ground wetness is estimated from preceding rainfall.

    Recent Rainfall Events
    Detected storm events from continuous readings
    Historical Context
    Records, anomalies, and comparisons
    Nearby River Gauges
    Nearby Rain Gauges

    Loading the annual rainfall comparison…

    Monthly Overview
    Monthly rainfall totals with historical normal range

    St Paul's Walden gets about 654 mm of rain a year on average (wettest month October, 69 mm; driest March, 39 mm). That is 44% drier than the UK as a whole, which averages 1,163 mm a year. Source: Met Office HadUK-Grid 1991–2020 (5 km grid), 2.3 km away. Average rainfall: HadUK-Grid v1.3.2, Met Office. Contains public sector information licensed under the Open Government Licence v3.0.

    Nearby storm overflows
    Water-company event-duration monitors within 3 km of this rain gauge
    Loading nearby overflows…

    Loading recent reported spill starts…
    Location

    Reference
    240816TP

    Source
    Environment Agency

    Coordinates
    51.873475, -0.269208

    County
    Hertfordshire

    Data from
    -

    See the previous version of this page