- Stage now
- 6.52 ftreported Oct 15, 6:00 AM CDT
- 24 hour change
- Fell 0.61 ftsince Oct 14, 6:00 AM
- Elevation
- 518 ftabove sea level
- County
- Lee County
- Position
- 40.4000° N, 91.3667° W
- Record since
- 2002
Water level
Mississippi River at Keokuk LD19
Stage is the height of the water's surface above the gauge's own fixed zero, in feet, not the depth of the water. Every point drawn is a reading the gauge sent, at the time it sent it.
- Latest
- 6.52 ftOct 15, 6:00 AM
- Highest
- 9.37 ftOct 9, 6:00 AM
- Lowest
- 6.52 ftOct 15, 6:00 AM
- Range
- 2.85 fthighest less lowest
- Change
- Fell 2.85 ftsince Oct 9, 6:00 AM
- Readings
- 7
The readings these charts were drawn from, as a table
| Time | Stage ft |
|---|---|
| Oct 15, 6:00 AM | 6.52 |
| Oct 14, 6:00 AM | 7.13 |
| Oct 13, 6:00 AM | 7.51 |
| Oct 12, 6:00 AM | 7.80 |
| Oct 11, 6:00 AM | 8.30 |
| Oct 10, 6:00 AM | 8.79 |
| Oct 9, 6:00 AM | 9.37 |
- Latest
- 6.52 ftOct 15, 6:00 AM
- Highest
- 12.86 ftSep 25, 6:00 AM
- Lowest
- 2.58 ftSep 16, 6:00 AM
- Range
- 10.28 fthighest less lowest
- Change
- Rose 3.94 ftsince Sep 16, 6:00 AM
- Readings
- 30
The readings these charts were drawn from, as a table
| Day | High ft | Low ft | Average ft | Last ft | Readings |
|---|---|---|---|---|---|
| Oct 15 | 6.52 | 6.52 | 6.52 | 6.52 | 1 |
| Oct 14 | 7.13 | 7.13 | 7.13 | 7.13 | 1 |
| Oct 13 | 7.51 | 7.51 | 7.51 | 7.51 | 1 |
| Oct 12 | 7.80 | 7.80 | 7.80 | 7.80 | 1 |
| Oct 11 | 8.30 | 8.30 | 8.30 | 8.30 | 1 |
| Oct 10 | 8.79 | 8.79 | 8.79 | 8.79 | 1 |
| Oct 9 | 9.37 | 9.37 | 9.37 | 9.37 | 1 |
| Oct 8 | 9.91 | 9.91 | 9.91 | 9.91 | 1 |
| Oct 7 | 10.82 | 10.82 | 10.82 | 10.82 | 1 |
| Oct 6 | 11.75 | 11.75 | 11.75 | 11.75 | 1 |
| Oct 5 | 11.80 | 11.80 | 11.80 | 11.80 | 1 |
| Oct 4 | 11.82 | 11.82 | 11.82 | 11.82 | 1 |
| Oct 3 | 11.77 | 11.77 | 11.77 | 11.77 | 1 |
| Oct 2 | 10.51 | 10.51 | 10.51 | 10.51 | 1 |
| Oct 1 | 7.40 | 7.40 | 7.40 | 7.40 | 1 |
| Sep 30 | 7.60 | 7.60 | 7.60 | 7.60 | 1 |
| Sep 29 | 9.00 | 9.00 | 9.00 | 9.00 | 1 |
| Sep 28 | 9.27 | 9.27 | 9.27 | 9.27 | 1 |
| Sep 27 | 10.51 | 10.51 | 10.51 | 10.51 | 1 |
| Sep 26 | 12.01 | 12.01 | 12.01 | 12.01 | 1 |
| Sep 25 | 12.86 | 12.86 | 12.86 | 12.86 | 1 |
| Sep 24 | 12.66 | 12.66 | 12.66 | 12.66 | 1 |
| Sep 23 | 11.84 | 11.84 | 11.84 | 11.84 | 1 |
| Sep 22 | 10.98 | 10.98 | 10.98 | 10.98 | 1 |
| Sep 21 | 9.01 | 9.01 | 9.01 | 9.01 | 1 |
| Sep 20 | 5.47 | 5.47 | 5.47 | 5.47 | 1 |
| Sep 19 | 4.60 | 4.60 | 4.60 | 4.60 | 1 |
| Sep 18 | 4.60 | 4.60 | 4.60 | 4.60 | 1 |
| Sep 17 | 3.79 | 3.79 | 3.79 | 3.79 | 1 |
| Sep 16 | 2.58 | 2.58 | 2.58 | 2.58 | 1 |
How it reports
- Schedule
- every 30 minon the hour's :10 and :40
- Reports received, 24 hours
- 48 of 48100% of its schedule, 51 reports in all
- Reports received, 7 days
- 335 of 33699.7% of its schedule, 355 reports in all
- Longest silence, 7 days
- 1 hourfrom Oct 13, 10:40 AM
- Latest report
- Oct 15, 11:40 PMlocal time
- Time to reach Storm Station
- 17 min9 in 10 within 24 min
- Against its reference, 30 days
- +3.5 °Fwarmer than the airport station KEOK, 5.3 miles away, on average over 850 readings; typical difference 4.3 °F
From Storm Station's own record of every report it heard from this station.
Against its reference: each temperature this station reports is compared with the nearest airport or climate reference station that reported within half an hour, up to 15 miles away. The figure is its reading less the reference's, on average, as both were reported; the typical difference is the root mean square. The difference in height is shown where both heights are known.
Its schedule is one report every 30 min, 48 in 24 hours. Two reports in the same 30 min count as one received.
Ranking Statistics
247 score96.0of 100
- Iowa median
- 94.7the median score of 1,060 stations
- Scoring higher
- 303stations in Iowa
- Sharing its score
- 28ranks 304 to 331
- Points deducted
- 4.01.6 forecast check, 1.4 arrival, 0.8 accuracy, 0.2 reports received
- Counted at the median
- Forecast checknot measured at this station; Iowa median 83.8
Equal scores are ordered by the share of scheduled reports received, then the reports due in the week (the longer record first), then the median arrival, then the longest silence.
- Reports receivedweight 3599.434.8 of 35 pointsIowa median 99.0334 of 336 scheduled reports received in 7 days
- Arrivalweight 1086.38.6 of 10 pointsIowa median 82.9half its reports arrived within 17 min
- Continuityweight 10100.010.0 of 10 pointsIowa median 100.0longest silence 60 min, on a schedule of one report every 30 min
- Accuracyweight 2095.919.2 of 20 pointsIowa median 100.0its temperature against the airport station KEOK, 5.3 miles away, over 331 readings: typical difference 2.3 °F beyond a steady offset of +2.9 °F
- Instrument checksweight 15100.015.0 of 15 pointsIowa median 100.00 of 331 readings failed their check against its reference station
- Forecast checkweight 10-8.4 of 10 points, at the medianIowa median 83.8-
The score is the weighted mean of its six parts, from the last 7 days. How a station is ranked sets out each part.
How each part is scored
- Reports received
- Full marks for every scheduled report received, none for none, in proportion between
- Arrival
- Full marks for a median arrival within 10 min, none at 60 min
- Continuity
- Full marks for a longest silence of 3 reports or less (1.5 h), none for 72 (36 h)
- Accuracy
- Full marks within 2.0 °F of its reference, typically, none beyond 8.5 °F
- Instrument checks
- Full marks for no reading failed, none for 5 per cent or more
- Forecast check
- Full marks within 2 °F of the forecast on average, none at 8 °F
Near Mississippi River at Keokuk LD19
Gauges
Weather instruments
How to read a gauge
A gauge measures the height of the water where it stands, its stage, in feet above a fixed mark at that gauge. Two gauges' stages are not comparable: each is measured from its own mark, and a reservoir's is often its height above sea level.
The stage shown is the latest the gauge reported, with the time it reported it. Storm Station hears each gauge on its own schedule and ranks it among its state's stations by its 247 score, how reliably it reports and how its readings hold up: that is its 247 rank.