Alert archive / Idaho / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 39, NWS Missoula, MT

July 17, 2007Idaho County, Idaho

NWS Missoula, MT issued this severe thunderstorm warning at Jul 17, 2007, 2:54 PM PDT for Idaho County, Idaho. It was in force for 18 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 17, 2007, 2:54 PM PDT (21:54 UTC)
Expired: Jul 17, 2007, 3:12 PM PDT
In force: 18 min
Issued by: NWS Missoula, MT
Area: Counties, with a storm outline in the text

County Idaho County, ID

The radar

The Missoula radar (KMSX), 193 km from the middle of the area, began a volume at 21:57 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

Spokane, WA (KOTX), launched 12:00Z, 9.9 hours before the alert went out and 209 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 3250 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: -8 m²/s²
0-3 km storm-relative helicity: 222 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 
WUUS55 KMSO 172154
SVRMSO
IDC049-172300-
/O.NEW.KMSO.SV.W.0039.070717T2154Z-070717T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MISSOULA MT
254 PM PDT TUE JUL 17 2007

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL IDAHO COUNTY IN CENTRAL IDAHO...

* UNTIL 400 PM PDT.

* AT 248 PM PDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM. 
  THIS STORM WAS LOCATED 7 MILES WEST OF GOLDEN...OR ABOUT 17 MILES
  SOUTHEAST OF GRANGEVILLE...AND WAS MOVING NORTH AT 5 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  NEWSOME AROUND 340 PM PDT...
  CLEARWATER AROUND 400 PM PDT.

LARGE HAIL IS LIKELY WITH THIS SEVERE THUNDERSTORM. DAMAGING WINDS
ARE POSSIBLE...ALONG WITH FREQUENT LIGHTNING AND HEAVY RAIN. FOR YOUR
PROTECTION...GO INDOORS AND STAY AWAY FROM WINDOWS. IF YOU ARE CAUGHT
OUTSIDE...MOVE TO A WELL PROTECTED AREA.

LAT...LON 4575 11596 4572 11571 4602 11559 4606 11594

$$

1 follow-up statement

000 
WWUS55 KMSO 172212
SVSMSO

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MISSOULA MT
412 PM MDT TUE JUL 17 2007

IDC049-172222-
/O.CAN.KMSO.SV.W.0039.000000T0000Z-070717T2300Z/
IDAHO ID-
312 PM PDT TUE JUL 17 2007

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL IDAHO COUNTY IS
CANCELLED...

THE SEVERE THUNDERSTORM SOUTHEAST OF GRANGEVILLE HAS WEAKENED AND
IS NO LONGER SEVERE.

LAT...LON 4575 11596 4572 11571 4602 11559 4606 11594

$$

Nearby

Severe Thunderstorm Warnings in Idaho, 2007 Every severe thunderstorm warning in 2007

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.