Alert archive / Idaho / Flash Flood Warnings in 2012

Flash Flood Warning 2, NWS Pocatello, ID

July 14, 2012Bonneville County, Madison County, Idaho

NWS Pocatello, ID issued this flash flood warning at Jul 14, 2012, 3:39 PM MDT for Bonneville County, Madison County, Idaho. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 14, 2012, 3:39 PM MDT (21:39 UTC)
Expired
Jul 14, 2012, 5:45 PM MDT
In force
2 hr
Issued by
NWS Pocatello, ID
Area
Storm-based polygon
Flood severity
None

Counties Bonneville County, ID, Madison County, ID

The radar

The Pocatello radar (KSFX), 109 km from the middle of the area, began a volume at 21:41 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 nearest sounding before it

Riverton, WY (KRIW), launched 12:00Z, 9.7 hours before the alert went out and 265 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Riverton, WY at 12:00Z on 2012-07-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Riverton, WY at 12:00Z on 2012-07-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 54 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
3098 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
54 m²/s²
0-3 km storm-relative helicity
101 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

650 
WGUS55 KPIH 142139
FFWPIH
IDC019-065-142345-
/O.NEW.KPIH.FF.W.0002.120714T2139Z-120714T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE POCATELLO ID
339 PM MDT SAT JUL 14 2012

THE NATIONAL WEATHER SERVICE IN POCATELLO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTH CENTRAL BONNEVILLE COUNTY IN SOUTHEAST IDAHO...
  SOUTHEASTERN MADISON COUNTY IN SOUTHEAST IDAHO...

* UNTIL 545 PM MDT

* AT 336 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  FLASH FLOODING FROM A THUNDERSTORM OVER THE WARNED AREA.

* LOCATIONS THAT COULD BE AFFECTED INCLUDE...
   POPLAR AND HIGHWAY 26...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

&&

LAT...LON 4364 11141 4352 11155 4359 11174 4363 11171
      4363 11163 4366 11163 4365 11169 4381 11158
      4378 11141

$$

RS
2 follow-up statements
854 
WGUS75 KPIH 142231
FFSPIH

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE POCATELLO ID
431 PM MDT SAT JUL 14 2012

IDC019-065-142345-
/O.CON.KPIH.FF.W.0002.000000T0000Z-120714T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BONNEVILLE ID-MADISON ID-
431 PM MDT SAT JUL 14 2012

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 545 PM MDT FOR
SOUTHEASTERN MADISON AND NORTH CENTRAL BONNEVILLE COUNTIES...

AT 422 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE ADDITIONAL THUNDERSTORMS MOVING THROUGH THE AREAS AROUND 
KELLEY CANYON AND LOOKOUT MOUNTAIN NORTHEAST OF POPLAR ON HIGHWAY 26 
AND WILL PRODUCE FLASH FLOODING OVER THE WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FLOODING IS OCCURRING OR IS IMMINENT. IT IS IMPORTANT TO KNOW WHERE 
YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME 
KILLERS IN HEAVY RAINS. CAMPERS AND HIKERS SHOULD AVOID STREAMS OR 
CREEKS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM MDT
SATURDAY EVENING FOR EAST CENTRAL IDAHO.

&&

LAT...LON 4364 11141 4352 11155 4359 11174 4363 11171
      4363 11163 4366 11163 4365 11169 4381 11158
      4378 11141

$$

RS
168 
WGUS75 KPIH 142339
FFSPIH

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE POCATELLO ID
539 PM MDT SAT JUL 14 2012

IDC019-065-142350-
/O.EXP.KPIH.FF.W.0002.000000T0000Z-120714T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BONNEVILLE ID-MADISON ID-
539 PM MDT SAT JUL 14 2012

...THE FLASH FLOOD WARNING WILL EXPIRE AT 545 PM MDT FOR SOUTHEASTERN
MADISON AND NORTH CENTRAL BONNEVILLE COUNTIES...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM MDT
SATURDAY EVENING FOR EAST CENTRAL IDAHO.

LAT...LON 4364 11141 4352 11155 4359 11174 4363 11171
      4363 11163 4366 11163 4365 11169 4381 11158
      4378 11141

$$

RS

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 14, 12:47 PM MDTSpecial Weather StatementPIHCassia, Oneida, Power88 min
Jul 14, 1:57 PM MDTSevere Thunderstorm WarningPIHBlaine, Butte, Minidoka, Power21 min
Jul 14, 2:39 PM MDTSpecial Weather StatementPIHBingham, Blaine, Butte, Jefferson36 min
Jul 14, 3:06 PM MDTSpecial Weather StatementPIHBonneville39 min
Jul 14, 3:33 PM MDTFlash Flood WarningPIHButte, Clark2 hr
Jul 14, 4:41 PM MDTSpecial Weather StatementPIHBear Lake94 min
Jul 14, 5:21 PM MDTSpecial Weather StatementPIHMadison39 min

Nearby

Flash Flood Warnings in Idaho, 2012Every flash flood warning in 2012

Sources

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