Alert archive / Oregon / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 13, NWS Boise, ID

July 14, 2012Baker County, Malheur County, Oregon

NWS Boise, ID issued this severe thunderstorm warning at Jul 14, 2012, 2:40 PM PDT for Baker County, Malheur County, Oregon. It was in force for 50 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
Jul 14, 2012, 2:40 PM PDT (21:40 UTC)
Expired
Jul 14, 2012, 3:30 PM PDT
In force
50 min
Issued by
NWS Boise, ID
Area
Storm-based polygon

Counties Baker County, OR, Malheur County, OR

The radar

The Pendleton radar (KPDT), 155 km from the middle of the area, began a volume at 21:43 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jul 14, 1:27 PM PDTSevere Thunderstorm WatchSPC9 hr

The nearest sounding before it

Boise Airport, ID (KBOI), launched 12:00Z, 9.7 hours before the alert went out and 173 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 12:00Z on 2012-07-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 92 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, Boise Airport, ID at 12:00Z on 2012-07-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 75 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
92 J/kg
Mixed-layer CIN
-326 J/kg
Mixed-layer LCL
1845 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
75 m²/s²
0-3 km storm-relative helicity
71 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.

649 
WUUS55 KBOI 142140
SVRBOI
ORC001-045-142230-
/O.NEW.KBOI.SV.W.0013.120714T2140Z-120714T2230Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BOISE ID
240 PM PDT SAT JUL 14 2012

THE NATIONAL WEATHER SERVICE IN BOISE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN BAKER COUNTY IN NORTHEAST OREGON...
  AND NORTHWESTERN MALHEUR COUNTY IN SOUTHEAST OREGON...

* UNTIL 330 PM PDT/430 PM MDT/.

* AT 236 PM PDT...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 10
  MILES WEST OF IRONSIDE...OR 34 MILES SOUTHWEST OF BAKER...AND WAS
  MOVING NORTHEAST AT 15 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  IRONSIDE MOUNTAIN AROUND 340 PM MDT...
  ELDORADO PASS AROUND 345 PM MDT...
  ELDORADO PASS AROUND 350 PM MDT...
  IRONSIDE AROUND 415 PM MDT...
  BALDY MOUNTAIN AROUND 430 PM MDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THE STORM...TAKE IMMEDIATE ACTION TO
PROTECT LIFE AND PROPERTY. SEEK SHELTER INSIDE A STURDY BUILDING AND
STAY AWAY FROM WINDOWS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM PDT
SATURDAY EVENING/1100 PM MDT SATURDAY EVENING/ FOR SOUTHWESTERN IDAHO
AND EASTERN OREGON.

&&

LAT...LON 4459 11792 4439 11772 4421 11816 4436 11830
TIME...MOT...LOC 2140Z 234DEG 12KT 4433 11813

$$

BB

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 14, 10:18 AM PDTSpecial Weather StatementBOIBaker42 min
Jul 14, 1:55 PM PDTSevere Thunderstorm WarningBOIBaker, Malheur50 min
Jul 14, 2:50 PM PDTTornado WarningBOIBaker, Malheur25 min
Jul 14, 3:28 PM PDTSevere Thunderstorm WarningBOIBaker, Malheur47 min
Jul 14, 3:51 PM PDTSevere Thunderstorm WarningBOIBaker39 min
Jul 14, 4:15 PM PDTSevere Thunderstorm WarningBOIBaker, Malheur36 min
Jul 14, 4:47 PM PDTSevere Thunderstorm WarningBOIBaker43 min

Nearby

Severe Thunderstorm Warnings in Oregon, 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.