Alert archive / Idaho / Mesoscale Discussions in 2006

Mesoscale Discussion 39

January 10, 20064 counties in Idaho

The Storm Prediction Center issued this mesoscale discussion at Jan 10, 2006, 5:33 PM MST for 4 counties in Idaho. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jan 10, 2006, 5:33 PM MST (00:33 UTC)
Expired
Jan 10, 2006, 10:30 PM MST
In force
5 hr
Issued by
the Storm Prediction Center

Counties Adams County, ID, Boise County, ID, Camas County, ID, Valley County, ID

The radar

The Boise radar (KCBX), 94 km from the middle of the area, began a volume at 00:37 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

Boise Airport, ID (KBOI), launched 00:00Z, 0.6 hours before the alert went out and 85 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 2006-01-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2006-01-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 256 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
847 m above ground
0-6 km bulk shear
71 kt
0-1 km storm-relative helicity
256 m²/s²
0-3 km storm-relative helicity
315 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.

000 
ACUS11 KWNS 110034
SWOMCD
SPC MCD 110033 
IDZ000-110530-

MESOSCALE DISCUSSION 0039
NWS STORM PREDICTION CENTER NORMAN OK
0633 PM CST TUE JAN 10 2006

AREAS AFFECTED...CENTRAL/SAWTOOTH MOUNTAINS OF ID

CONCERNING...HEAVY SNOW 

VALID 110033Z - 110530Z

HEAVY SNOW WILL INCREASE ACROSS THE CENTRAL/SAWTOOTH MOUNTAINS OF ID
THIS EVENING...WITH 2 IN/HR RATES POSSIBLE...ESPECIALLY ABOVE
5500-6000 FT.

WATER VAPOR IMAGERY DEPICTS COMPACT SHORTWAVE TROUGH OFF THE PACIFIC
NORTHWEST COAST EARLY THIS EVENING. AS HEIGHT FALLS OCCUR ACROSS THE
NORTHERN INTERMOUNTAIN REGION...STRONG MID/UPPER LEVEL JET WILL
TRANSLATE SOUTHWARD OVER THE REGION TONIGHT...WITH OROGRAPHIC LIFT
INCREASING ACROSS THE CENTRAL MOUNTAINS OF ID. 00Z BOISE RAOB AND
LOCAL WSR-88D VWP ALREADY FEATURES MID LEVEL WESTERLY FLOW OF 50 KTS
OR GREATER ABOVE 4 KM...WITH 0.66 INCH PRECIPITABLE WATER /AROUND
200 PERCENT OF NORMAL/ REPRESENTATIVE OF MOIST ENVIRONMENT. ALSO IN
ACCORDANCE WITH 00Z BOISE RAOB...MESONET OBSERVATIONS GENERALLY
DEPICT SNOW LEVELS AROUND 5500-6000 FT ACROSS THE CENTRAL
MOUNTAINS...WHICH SHOULD FLUCTUATE LITTLE TONIGHT AMIDST THE
PERSISTENT WARM AIR ADVECTION REGIME. SNOW RATES OF 2 IN/HR WILL BE
POSSIBLE TONIGHT...ESPECIALLY INTO WEST FACING SLOPES.

..GUYER.. 01/11/2006

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...PIH...BOI...

44981670 44831536 44071431 43401404 43231483 43451548
44051590 44501634 44681672

Nearby

Mesoscale Discussions in Idaho, 2006Every mesoscale discussion in 2006

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.