Alert archive / Idaho / Tornado Warnings in 2010

Tornado Warning 1, NWS Boise, ID

June 4, 2010Ada County, Boise County, Elmore County, Idaho

NWS Boise, ID issued this tornado warning at Jun 4, 2010, 2:55 PM MDT for Ada County, Boise County, Elmore County, Idaho. 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 counties it named.

The facts

Issued
Jun 4, 2010, 2:55 PM MDT (20:55 UTC)
Expired
Jun 4, 2010, 3:45 PM MDT
In force
50 min
Issued by
NWS Boise, ID
Area
Storm-based polygon

Counties Ada County, ID, Boise County, ID, Elmore County, ID

The radar

The Boise radar (KCBX), 36 km from the middle of the area, began a volume at 20:57 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

Boise Airport, ID (KBOI), launched 12:00Z, 8.9 hours before the alert went out and 31 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 2010-06-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 18 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 12:00Z on 2010-06-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 244 square meters per square second.1939587897117136Sfc1 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
18 J/kg
Mixed-layer CIN
-33 J/kg
Mixed-layer LCL
937 m above ground
0-6 km bulk shear
65 kt
0-1 km storm-relative helicity
244 m²/s²
0-3 km storm-relative helicity
332 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 4, 9:40 AM MDTAreal Flood WarningBOIAdams, Boise, Elmore, Gem, Valley12 hr
Jun 4, 11:26 AM MDTRiver Flood WarningBOIGem7 days
Jun 4, 11:26 AM MDTRiver Flood WarningBOIPayette6 days
Jun 4, 11:31 AM MDTRiver Flood WarningBOIWashington47 hr
Jun 4, 11:42 AM MDTFlash Flood WarningBOIAdams, Washington108 min
Jun 4, 1:17 PM MDTFlash Flood WarningBOIAdams, Gem, Valley, Washington104 min
Jun 4, 1:37 PM MDTSevere Thunderstorm WarningBOIAda, Adams, Boise, Canyon, Gem, Payette and 2 more53 min
Jun 4, 1:57 PM MDTFlash Flood WarningBOIGem, Payette, Washington67 min
Jun 4, 2:21 PM MDTFlash Flood WarningBOIBoise, Gem, Valley60 min
Jun 4, 3:38 PM MDTRiver Flood WarningBOIAdams, Washington19 hr

Nearby

Tornado Warnings in Idaho, 2010Every tornado warning in 2010Tornadoes in 2010

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.