Alert archive / Idaho / Areal Flood Warnings in 2011

Areal Flood Warning 28, NWS Missoula, MT

June 7, 2011Clearwater County, Idaho County, Idaho

NWS Missoula, MT issued this areal flood warning at Jun 7, 2011, 1:35 PM PDT for Clearwater County, Idaho County, Idaho. It was in force for 24 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: Jun 7, 2011, 1:35 PM PDT (20:35 UTC)
Expired: Jun 8, 2011, 1:14 PM PDT
In force: 24 hr
Issued by: NWS Missoula, MT
Area: Storm-based polygon
Flood severity: None

Counties Clearwater County, ID, Idaho County, ID

The radar

The Missoula radar (KMSX), 148 km from the middle of the area, began a volume at 20:36 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, 8.6 hours before the alert went out and 172 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: 2 J/kg
Mixed-layer CIN: -304 J/kg
Mixed-layer LCL: 834 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 65 m²/s²
0-3 km storm-relative helicity: 76 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 areal flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Missoula, MT wrote its last area forecast discussion before this areal flood warning went out at Jun 7, 1:24 PM PDT, 11 minutes earlier.

Area forecast discussion, Jun 7, 1:24 PM PDT, 11 minutes before

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The office that day

Everything else NWS Missoula, MT issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 6, 10:35 PM PDT	Areal Flood Warning	MSO	Lincoln	57 hr
Jun 7, 4:18 AM PDT	Areal Flood Warning	MSO	Ravalli	52 hr
Jun 7, 8:41 AM PDT	Areal Flood Warning	MSO	Flathead	48 hr
Jun 7, 8:46 AM PDT	Areal Flood Warning	MSO	Ravalli	47 hr
Jun 7, 8:51 AM PDT	Areal Flood Warning	MSO	Missoula, Ravalli	3 days
Jun 7, 8:59 AM PDT	Areal Flood Warning	MSO	Granite, Missoula	3 days
Jun 7, 9:04 AM PDT	Areal Flood Warning	MSO	Sanders	10 days
Jun 7, 9:27 AM PDT	Areal Flood Warning	MSO	Lake	70 hr
Jun 7, 9:33 AM PDT	Areal Flood Warning	MSO	Ravalli	26 hr
Jun 7, 11:30 AM PDT	Areal Flood Warning	MSO	Granite	47 hr
Jun 7, 3:33 PM PDT	Areal Flood Warning	MSO	Deer Lodge	43 hr
Jun 7, 3:51 PM PDT	Areal Flood Warning	MSO	Missoula	67 hr
Jun 7, 4:19 PM PDT	Areal Flood Warning	MSO	Missoula, Powell	66 hr
Jun 7, 4:26 PM PDT	Areal Flood Warning	MSO	Granite, Missoula	10 days
Jun 7, 4:55 PM PDT	Areal Flood Warning	MSO	Powell	65 hr
Jun 7, 1:31 PM PDT	Areal Flood Warning	MSO	Idaho	42 hr

Nearby

Areal Flood Warnings in Idaho, 2011 Every areal flood warning in 2011

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.