Alert archive / Oregon / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 8, NWS Boise, ID

June 1, 2015Malheur County, Oregon

NWS Boise, ID issued this severe thunderstorm warning at Jun 1, 2015, 3:43 PM MDT for Malheur County, Oregon. It was in force for 47 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 1, 2015, 3:43 PM MDT (21:43 UTC)
Expired: Jun 1, 2015, 4:30 PM MDT
In force: 47 min
Issued by: NWS Boise, ID
Area: Storm-based polygon

County Malheur County, OR

The radar

The Boise radar (KCBX), 117 km from the middle of the area, began a volume at 21:44 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, 9.7 hours before the alert went out and 122 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: 2267 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 49 m²/s²
0-3 km storm-relative helicity: 79 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Boise, ID wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 1, 2:54 PM MDT, 49 minutes earlier.

Area forecast discussion, Jun 1, 2:54 PM MDT, 49 minutes before

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In the hours before

Special weather statement, Jun 1, 12:49 PM MDT, 2 hours 54 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BOISE ID
1249 PM MDT MON JUN 1 2015

IDZ030-011930-
SOUTHERN TWIN  FALLS COUNTY ID-
1249 PM MDT MON JUN 1 2015

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN TWIN FALLS COUNTY
UNTIL 130 PM MDT...

AT 1248 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM
NEAR CHINA MOUNTAIN...OR 13 MILES WEST OF JACKPOT...MOVING NORTHEAST
AT 30 MPH.

DIME SIZE HAIL AND WINDS TO 50 MPH WILL BE POSSIBLE WITH THIS STORM.

THIS STRONG THUNDERSTORM WILL BE NEAR...
  CHINA MOUNTAIN AROUND 1250 PM MDT.
  SALMON FALLS RESERVOIR...NORTON BAY AND CEDAR CREEK RESERVOIR
AROUND 110 PM MDT.
  SALMON FALLS DAM AROUND 120 PM MDT.
  ROGERSON AND HOLLISTER AROUND 130 PM MDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WHEN SAFE TO DO SO...PLEASE RELAY STORM REPORTS TO THE NATIONAL
WEATHER SERVICE IN BOISE IDAHO VIA LOCAL LAW ENFORCEMENT...OR NWS
BOISE FACEBOOK AND TWITTER ACCOUNTS.

&&

LAT...LON 4202 11504 4209 11504 4244 11465 4243 11459
      4227 11437 4200 11479 4200 11500
TIME...MOT...LOC 1848Z 223DEG 28KT 4205 11492

DG

Local storm report, Jun 1, 1:59 PM MDT, 1 hour 44 minutes before

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Special weather statement, Jun 1, 3:14 PM MDT, 29 minutes before

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Special weather statement, Jun 1, 3:24 PM MDT, 19 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 1, 7:57 AM MDT	Special Weather Statement	BOI		48 min
Jun 1, 8:47 AM MDT	Special Weather Statement	BOI	Elmore	43 min
Jun 1, 12:49 PM MDT	Special Weather Statement	BOI	Twin Falls	41 min
Jun 1, 1:08 PM MDT	Severe Thunderstorm Warning	BOI	Gooding, Jerome, Twin Falls	48 min
Jun 1, 3:24 PM MDT	Special Weather Statement	BOI	Payette	51 min
Jun 1, 4:48 PM MDT	Special Weather Statement	BOI	Payette	42 min
Jun 1, 3:14 PM MDT	Special Weather Statement	BOI	Baker	46 min

Nearby

Severe Thunderstorm Warnings in Oregon, 2015 Every severe thunderstorm warning in 2015

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.