Alert archive / Idaho / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 9, NWS Pocatello, ID

August 26, 20125 counties in Idaho

NWS Pocatello, ID issued this severe thunderstorm warning at Aug 26, 2012, 7:37 PM MDT for 5 counties in Idaho. It was in force for 38 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 26, 2012, 7:37 PM MDT (01:37 UTC)
Expired
Aug 26, 2012, 8:15 PM MDT
In force
38 min
Issued by
NWS Pocatello, ID
Area
Storm-based polygon

Counties Blaine County, ID, Cassia County, ID, Lincoln County, ID, Minidoka County, ID, Power County, ID

The radar

The Pocatello radar (KSFX), 117 km from the middle of the area, began a volume at 01:37 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

Elko, NV (KLKN), launched 00:00Z, 1.6 hours before the alert went out and 196 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, Elko, NV at 00:00Z on 2012-08-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 20 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Elko, NV at 00:00Z on 2012-08-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 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
20 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
3494 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
15 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.

365 
WUUS55 KPIH 270137
SVRPIH
IDC013-031-063-067-077-270215-
/O.NEW.KPIH.SV.W.0009.120827T0137Z-120827T0215Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE POCATELLO ID
737 PM MDT SUN AUG 26 2012

THE NATIONAL WEATHER SERVICE IN POCATELLO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN BLAINE COUNTY IN CENTRAL IDAHO...
  NORTHERN CASSIA COUNTY IN SOUTH CENTRAL IDAHO...
  THIS INCLUDES THE CITY OF BURLEY...
  SOUTHEASTERN LINCOLN COUNTY IN SOUTH CENTRAL IDAHO...
  MINIDOKA COUNTY IN SOUTH CENTRAL IDAHO...
  THIS INCLUDES THE CITIES OF...RUPERT...PAUL...HEYBURN...
  WEST CENTRAL POWER COUNTY IN SOUTHEAST IDAHO...

* UNTIL 815 PM MDT

* AT 730 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
  EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
  FROM 26 MILES NORTHWEST OF PAUL TO 19 MILES SOUTHWEST OF BURLEY...
  OR ALONG A LINE EXTENDING FROM 13 MILES EAST OF JEROME TO 19 MILES
  SOUTHWEST OF BURLEY...AND MOVING EAST AT 35 MPH.

* LOCATIONS THAT COULD BE AFFECTED INCLUDE...
   BURLEY...
   PAUL AND  HEYBURN...
   RUPERT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING WIND DAMAGE ACROSS TWIN FALLS 
COUNTY WITH POWER OUTAGES REPORTED. SEEK SHELTER NOW INSIDE A STURDY 
STRUCTURE AND STAY AWAY FROM WINDOWS!

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 4230 11412 4242 11417 4243 11408 4252 11406
      4254 11399 4254 11394 4276 11395 4276 11405
      4280 11407 4280 11433 4283 11434 4331 11341
      4246 11296
TIME...MOT...LOC 0136Z 249DEG 37KT 4278 11418 4243 11402

$$

DSH

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 26, 6:06 PM MDTSpecial Weather StatementPIHBingham, Butte, Jefferson54 min
Aug 26, 6:17 PM MDTSpecial Weather StatementPIHCuster43 min
Aug 26, 7:16 PM MDTSpecial Weather StatementPIHCassia, Lincoln, Minidoka59 min
Aug 26, 8:12 PM MDTSevere Thunderstorm WarningPIHBlaine, Cassia, Lincoln, Minidoka, Power48 min
Aug 26, 10:11 PM MDTSpecial Weather StatementPIHBingham64 min
Aug 27, 12:59 AM MDTRed Flag WarningPIHBannock, Bear Lake, Bonneville, Caribou, Franklin, Oneida and 1 more5 hr
Aug 27, 2:04 PM MDTFire Weather WatchPIHBannock, Bear Lake, Bingham, Bonneville, Butte, Caribou and 12 more27 hr

Nearby

Severe Thunderstorm Warnings in Idaho, 2012Every severe thunderstorm 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.