Alert archive / Montana / High Wind Warnings in 2009
High Wind Warning 7, NWS Billings, MT
NWS Billings, MT issued this high wind warning at May 13, 2009, 3:56 AM MDT for Carter County, Fallon County, Powder River County, Montana. It took effect at May 13, 2009, 6:00 AM MDT. It was in force for 11 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 13, 2009, 3:56 AM MDT (09:56 UTC)
- In effect from
- May 13, 2009, 6:00 AM MDT
- Expired
- May 13, 2009, 5:21 PM MDT
- In force
- 11 hr
- Issued by
- NWS Billings, MT
Counties Carter County, MT, Fallon County, MT, Powder River County, MT
The radar
The Rapid City radar (KUDX), 241 km from the middle of the area, began a volume at 09:56 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
Bismarck Municip, ND (KBIS), launched 00:00Z, 9.9 hours before the alert went out and 339 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.
- Mixed-layer CAPE
- 281 J/kg
- Mixed-layer CIN
- -38 J/kg
- Mixed-layer LCL
- 1743 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- -9 m²/s²
- 0-3 km storm-relative helicity
- 60 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.5
What forecasters said that day
The local office's own words before this high wind warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Billings, MT wrote its last area forecast discussion before this high wind warning went out at May 13, 3:36 AM MDT, 20 minutes earlier.
Area forecast discussion, May 13, 3:36 AM MDT, 20 minutes before
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</html>Hazardous weather outlook, May 12, 9:54 PM MDT, 6 hours 2 minutes before
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</html>Nearby
High Wind Warnings in Montana, 2009Every high wind warning in 2009
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.