Alert archive / Idaho / River Flood Warnings in 2018

River Flood Warning 21, NWS Pocatello, ID

June 19, 2018Bonneville County, Idaho

NWS Pocatello, ID issued this river flood warning at Jun 19, 2018, 12:29 PM MDT for Bonneville County, Idaho. It took effect at Jun 20, 2018, 5:30 AM MDT. It was in force for 31 hr.

The area

The outline as issued.

The facts

Issued: Jun 19, 2018, 12:29 PM MDT (18:29 UTC)
In effect from: Jun 20, 2018, 5:30 AM MDT
Expired: Jun 21, 2018, 12:56 PM MDT
In force: 31 hr
Issued by: NWS Pocatello, ID
Area: Storm-based polygon
Flood severity: Minor

County Bonneville County, ID

The radar

The Pocatello radar (KSFX), 72 km from the middle of the area, began a volume at 18:33 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The river

Written for the forecast point Snake River near Idaho Falls (SIFI1). The gauge peaked at 13.26 ft at Jun 21, 2018, 6:00 AM MDT.

Action stage: 12.6 ft
Minor stage: 13.2 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 13057155, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

The text

As transmitted.

293 
WGUS45 KPIH 191829
FLWPIH
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Pocatello ID
1229 PM MDT Tue Jun 19 2018

...The National Weather Service in Pocatello has issued a
Flood Warning for the following Rivers in Idaho... 

  Snake River above Eagle Rock near Idaho Falls affecting Bonneville 
  County
  
.Recent heavy rainfall resulted in increased flows on the Snake 
River above Eagle rock near Idaho Falls and increased releases 
upstream at Palisades Reservoir. The river will reach flood stage 
of 13.2 feet by 6 am MDT Wednesday morning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Safety Message...Persons near the River should be aware of the 
expected high water and take action to protect property.

&&

IDC019-212228-
/O.NEW.KPIH.FL.W.0021.180620T1130Z-000000T0000Z/
/SIFI1.1.DR.180620T1130Z.180621T1200Z.180622T1839Z.NO/
1229 PM MDT Tue Jun 19 2018

The National Weather Service in Pocatello has issued a 

* Flood Warning for 
  The Snake River above Eagle Rock near Idaho Falls.
* from late tonight until further notice...Or until the Warning is 
  cancelled.
* At 12:15 PM Tuesday the stage was 12.7 feet.
* Flood Stage is 13.2 feet.
* Minor Flooding is forecast.
* Impact...At 13.2 feet...or 23393 cfs...Fields and low-lying areas 
  near the river from the Roberts area downstream to near Idaho Falls
  will have minor flooding or seep/ponding of water. Walker boat 
  launch and park will be flooded.

&&


                       Fld     Observed           Forecast 6 AM
Location               Stg   Stg Day Time       Wed    Thu    Fri

Snake River
  Snake River above Ea 13.2  12.7 Tue 12 PM     13.2   13.5   13.3


&&


LAT...LON 4350 11212 4372 11220 4372 11202 4347 11198




$$

RS

2 follow-up statements

296 
WGUS85 KPIH 201745
FLSPIH
FLOOD STATEMENT
National Weather Service Pocatello ID
1145 AM MDT Wed Jun 20 2018

...The Flood Warning continues for the following Rivers in Idaho..
  Snake River above Eagle Rock near Idaho Falls affecting Bonneville 
  County
 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Safety Message...Persons near the River should be aware of the 
expected high water and take action to protect property.

&&

IDC019-212145-
/O.CON.KPIH.FL.W.0021.000000T0000Z-000000T0000Z/
/SIFI1.1.DR.180620T1115Z.180620T1800Z.180621T0225Z.NO/
1145 AM MDT Wed Jun 20 2018

The Flood Warning continues for
  The Snake River above Eagle Rock near Idaho Falls.
* At 11:15 AM Wednesday the stage was 13.2 feet.
* Flood Stage is 13.2 feet.
* Minor Flooding is occurring and Minor Flooding is forecast.
* Impact...At 13.2 feet...or 23393 cfs...Fields and low-lying areas 
  near the river from the Roberts area downstream to near Idaho Falls
  will have minor flooding or seep/ponding of water. Walker boat 
  launch and park will be flooded.

&&


                       Fld     Observed           Forecast 6 AM
Location               Stg   Stg Day Time       Thu    Fri    Sat

Snake River
  Snake River above Ea 13.2  13.2 Wed 11 AM     13.0   12.9   12.6


&&


LAT...LON 4350 11212 4372 11220 4372 11202 4347 11198




$$

RS

259 
WGUS85 KPIH 211856
FLSPIH
FLOOD STATEMENT
National Weather Service Pocatello ID
1256 PM MDT Thu Jun 21 2018

...The Flood Warning is cancelled for the following Rivers in 
Idaho...
 
  Snake River above Eagle Rock near Idaho Falls affecting Bonneville 
  County

.For the Snake River above Eagle Rock near Idaho Falls, water 
levels have already dropped below flood stage. Additional decreases 
are expected overnight, reducing the stage to at or below bankfull 
by Friday morning. 


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Safety Message...Persons near the River should be aware of the 
expected high water and take action to protect property.

&&

IDC019-211926-
/O.CAN.KPIH.FL.W.0021.000000T0000Z-180621T1856Z/
/SIFI1.1.DR.180620T1115Z.180621T1200Z.180621T1630Z.NO/
1256 PM MDT Thu Jun 21 2018

The Flood Warning is cancelled for
  The Snake River above Eagle Rock near Idaho Falls.
* At 12:30 PM Thursday the stage was 13.1 feet.
* Flood Stage is 13.2 feet.
* Fell below Flood Stage at 10:30 AM Thursday.
* Forecast...The River will continue to fall to 12.6 feet by tomorrow
  morning.
* Impact...At 13.2 feet...or 23393 cfs...Fields and low-lying areas 
  near the river from the Roberts area downstream to near Idaho Falls
  will have minor flooding or seep/ponding of water. Walker boat 
  launch and park will be flooded.

&&


                       Fld     Observed           Forecast 6 AM
Location               Stg   Stg Day Time       Fri    Sat    Sun

Snake River
  Snake River above Ea 13.2  13.2 Thu 12 PM     12.6   12.1   11.9


&&


LAT...LON 4350 11212 4372 11220 4372 11202 4347 11198




$$

RS

The office that day

Everything else NWS Pocatello, ID issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 18, 9:02 PM MDT	River Flood Advisory	PIH	Custer	23 hr
Jun 18, 11:44 PM MDT	River Flood Warning	PIH	Jefferson	3 days
Jun 19, 8:50 AM MDT	River Flood Advisory	PIH	Bingham	2 hr
Jun 19, 10:05 AM MDT	River Flood Advisory	PIH	Fremont, Jefferson, Madison	44 hr
Jun 19, 11:05 AM MDT	River Flood Warning	PIH	Bingham	28 hr

Nearby

River Flood Warnings in Idaho, 2018 Every river flood warning in 2018

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.