Alert archive / Idaho / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 49, NWS Pocatello, ID

August 4, 2011Bingham County, Bonneville County, Jefferson County, Idaho

NWS Pocatello, ID issued this severe thunderstorm warning at Aug 4, 2011, 6:42 PM MDT for Bingham County, Bonneville County, Jefferson County, Idaho. It was in force for 48 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Aug 4, 2011, 6:42 PM MDT (00:42 UTC)
Expired
Aug 4, 2011, 7:30 PM MDT
In force
48 min
Issued by
NWS Pocatello, ID
Area
Storm-based polygon

Counties Bingham County, ID, Bonneville County, ID, Jefferson County, ID

The radar

The Pocatello radar (KSFX), 62 km from the middle of the area, began a volume at 00:46 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.

What was reported inside it

TimeReportWhereRemark
Aug 4, 7:05 PM MDTTSTM WND GST 5311 W Osgood, ID

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Boise Airport, ID (KBOI), launched 00:00Z, 0.7 hours before the alert went out and 309 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, Boise Airport, ID at 00:00Z on 2011-08-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Boise Airport, ID at 00:00Z on 2011-08-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 46 square meters per square second.19395878Sfc1 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
3465 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
46 m²/s²
0-3 km storm-relative helicity
82 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.

959 
WUUS55 KPIH 050042
SVRPIH
IDC011-019-051-050130-
/O.NEW.KPIH.SV.W.0049.110805T0042Z-110805T0130Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE POCATELLO
642 PM MDT THU AUG 4 2011

THE NATIONAL WEATHER SERVICE IN POCATELLO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTH CENTRAL BINGHAM COUNTY IN SOUTHEAST IDAHO...
  NORTHWESTERN BONNEVILLE COUNTY IN SOUTHEAST IDAHO...
  SOUTHERN JEFFERSON COUNTY IN SOUTHEAST IDAHO...
  THIS INCLUDES THE CITY OF MUD LAKE...

* UNTIL 730 PM MDT

* AT 636 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 28
  MILES SOUTH OF MUD LAKE...OR 11 MILES SOUTH OF SOUTHEAST INL...AND
  MOVING NORTHEAST AT 35 MPH.

* LOCATIONS THAT COULD BE AFFECTED INCLUDE...
  HIGHWAY 20 WEST OF IDAHO FALLS...
  MUD LAKE AND ROBERTS...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

STAY TUNED TO THIS BROADCAST FOR THE LATEST UPDATES AND INFORMATION.
TO REPORT SEVERE WEATHER ONLY...CALL 1 800 8 7 7 1 9 3 7.

&&

LAT...LON 4369 11198 4342 11239 4343 11252 4351 11252
      4363 11269 4390 11247
TIME...MOT...LOC 0041Z 225DEG 31KT 4348 11253

$$

VALLE
2 follow-up statements
244 
WWUS55 KPIH 050100
SVSPIH

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE POCATELLO
700 PM MDT THU AUG 4 2011

IDC011-050109-
/O.CAN.KPIH.SV.W.0049.000000T0000Z-110805T0130Z/
BINGHAM ID-
700 PM MDT THU AUG 4 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL BINGHAM COUNTY
IS CANCELLED...

AT 659 PM MDT...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE 
THUNDERSTORMS WHICH PROMPTED THE WARNING IS MOVING OUT OF THE AREA. 
THEREFORE THE WARNING IS CANCELLED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

STAY TUNED TO THIS BROADCAST FOR THE LATEST UPDATES AND INFORMATION.
TO REPORT SEVERE WEATHER ONLY...CALL 1 800 8 7 7 1 9 3 7.

&&

LAT...LON 4369 11198 4346 11234 4354 11252 4364 11252
      4390 11247
TIME...MOT...LOC 0059Z 225DEG 31KT 4352 11231

$$

IDC019-051-050130-
/O.CON.KPIH.SV.W.0049.000000T0000Z-110805T0130Z/
JEFFERSON ID-BONNEVILLE ID-
700 PM MDT THU AUG 4 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM MDT
FOR NORTHWESTERN BONNEVILLE AND SOUTHERN JEFFERSON COUNTIES...

AT 655 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED 19 MILES SOUTHWEST OF ROBERTS...OR 14 MILES NORTHWEST OF
SHELLEY...MOVING NORTHEAST AT 35 MPH.

* LOCATIONS THAT COULD BE AFFECTED INCLUDE...
   HIGHWAY 20 WEST OF IDAHO FALLS...   
   ROBERTS...
   LEWISVILLE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

STAY TUNED TO THIS BROADCAST FOR THE LATEST UPDATES AND INFORMATION.
TO REPORT SEVERE WEATHER ONLY...CALL 1 800 8 7 7 1 9 3 7.

&&

LAT...LON 4369 11198 4346 11234 4354 11252 4364 11252
      4390 11247
TIME...MOT...LOC 0059Z 225DEG 31KT 4352 11231

$$

VALLE
658 
WWUS55 KPIH 050131
SVSPIH

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE POCATELLO
731 PM MDT THU AUG 4 2011

IDC019-051-050140-
/O.EXP.KPIH.SV.W.0049.000000T0000Z-110805T0130Z/
JEFFERSON ID-BONNEVILLE ID-
731 PM MDT THU AUG 4 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN BONNEVILLE AND
SOUTH CENTRAL JEFFERSON COUNTIES HAS EXPIRED...

AT 730 PM MDT...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE 
THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE AREA. 
THEREFORE THE WARNING HAS BEEN ALLOWED TO EXPIRE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

STAY TUNED TO THIS BROADCAST FOR THE LATEST UPDATES AND INFORMATION.
TO REPORT SEVERE WEATHER ONLY...CALL 1 800 8 7 7 1 9 3 7.

&&

LAT...LON 4369 11198 4346 11234 4354 11252 4364 11252
      4390 11247
TIME...MOT...LOC 0100Z 225DEG 31KT 4353 11230

$$

VALLE

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 4, 6:16 PM MDTSevere Thunderstorm WarningPIHBingham44 min
Aug 4, 6:19 PM MDTSpecial Weather StatementPIHButte41 min
Aug 4, 6:37 PM MDTSpecial Weather StatementPIHPower38 min
Aug 4, 7:05 PM MDTSevere Thunderstorm WarningPIHPower28 min
Aug 4, 7:29 PM MDTSevere Thunderstorm WarningPIHFremont, Jefferson, Madison46 min
Aug 4, 7:55 PM MDTSpecial Weather StatementPIHCamas50 min
Aug 4, 11:43 PM MDTSpecial Weather StatementPIHBear Lake47 min
Aug 5, 12:16 AM MDTSpecial Weather StatementPIHBannock, Power44 min
Aug 5, 2:45 PM MDTSpecial Weather StatementPIHButte45 min
Aug 5, 4:26 PM MDTSpecial Weather StatementPIHFranklin49 min
Aug 5, 5:50 PM MDTSpecial Weather StatementPIHFremont40 min

Nearby

Severe Thunderstorm Warnings in Idaho, 2011Every severe thunderstorm warning in 2011

Sources

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