Alert archive / Idaho / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 13, NWS Spokane, WA

June 24, 2012Bonner County, Boundary County, Idaho

NWS Spokane, WA issued this severe thunderstorm warning at Jun 24, 2012, 4:32 AM PDT for Bonner County, Boundary County, Idaho. It was in force for 43 min. 2 reports 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: Jun 24, 2012, 4:32 AM PDT (11:32 UTC)
Expired: Jun 24, 2012, 5:15 AM PDT
In force: 43 min
Issued by: NWS Spokane, WA
Area: Storm-based polygon

Counties Bonner County, ID, Boundary County, ID

The radar

The Spokane radar (KOTX), 163 km from the middle of the area, began a volume at 11:34 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

Time	Report	Where	Remark
Jun 24, 5:00 AM PDT	HAIL 1.25	5 Ene Bonners Ferry, ID
Jun 24, 5:15 AM PDT	HAIL 1.25	5 Ene Bonners Ferry, ID

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

The nearest sounding before it

Spokane, WA (KOTX), launched 00:00Z, 11.5 hours before the alert went out and 119 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 106 J/kg
Mixed-layer CIN: -16 J/kg
Mixed-layer LCL: 1228 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: -144 m²/s²
0-3 km storm-relative helicity: -99 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.3

Open this sounding in Storm Lab

The text

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

086 
WUUS56 KOTX 241132
SVROTX
IDC017-021-241215-
/O.NEW.KOTX.SV.W.0013.120624T1132Z-120624T1215Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SPOKANE WA
432 AM PDT SUN JUN 24 2012

THE NATIONAL WEATHER SERVICE IN SPOKANE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL BONNER COUNTY IN THE PANHANDLE OF IDAHO...
  EASTERN BOUNDARY COUNTY IN THE PANHANDLE OF IDAHO...

* UNTIL 515 AM PDT/615 AM MDT/

* AT 429 AM 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 20
  MILES SOUTH OF MOYIE SPRINGS...OR 18 MILES NORTHEAST OF
  SANDPOINT...AND MOVING NORTH AT 60 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO MOYIE
  SPRINGS...MEADOW CREEK AND MEADOW CREEK CAMPGROUND

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF
YOUR HOME OR BUSINESS. THIS STORM HAS THE POTENTIAL TO CAUSE SERIOUS
INJURY AND SIGNIFICANT DAMAGE TO PROPERTY.

&&

LAT...LON 4900 11604 4855 11604 4834 11616 4840 11641
      4901 11614 4901 11605
TIME...MOT...LOC 1132Z 199DEG 53KT 4848 11623

$$

JCOTE

The office that day

Everything else NWS Spokane, WA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 23, 6:31 PM PDT	Severe Thunderstorm Warning	OTX	Latah, Nez Perce	44 min
Jun 23, 6:52 PM PDT	Severe Thunderstorm Warning	OTX	Latah, Nez Perce	20 min
Jun 24, 3:29 AM PDT	Special Weather Statement	OTX	Bonner	61 min
Jun 24, 5:19 AM PDT	Special Weather Statement	OTX	Boundary	26 min

Nearby

Severe Thunderstorm Warnings in Idaho, 2012 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.