Alert archive / Idaho / Areal Flood Warnings in 2011
Areal Flood Warning 52, NWS Missoula, MT
NWS Missoula, MT issued this areal flood warning at Jun 29, 2011, 8:40 AM MDT for Lemhi County, Idaho. It was in force for 21 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 29, 2011, 8:40 AM MDT (14:40 UTC)
- Expired
- Jun 30, 2011, 5:20 AM MDT
- In force
- 21 hr
- Issued by
- NWS Missoula, MT
- Area
- Storm-based polygon
- Flood severity
- None
County Lemhi County, ID
The radar
The Pocatello radar (KSFX), 227 km from the middle of the area, began a volume at 14:41 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, 2.7 hours before the alert went out and 360 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1044 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 71 m²/s²
- 0-3 km storm-relative helicity
- 119 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 29, 3:24 AM MDT, 5 hours 16 minutes earlier.
Area forecast discussion, Jun 29, 3:24 AM MDT, 5 hours 16 minutes before
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</html>Hazardous weather outlook, Jun 29, 3:41 AM MDT, 4 hours 59 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MISSOULA MT 341 AM MDT WED JUN 29 2011 IDZ006-MTZ005>007-043-292145- SOUTHERN CLEARWATER MOUNTAINS-MISSOULA/BITTERROOT VALLEYS- BITTERROOT/SAPPHIRE MOUNTAINS-BUTTE/BLACKFOOT REGION- POTOMAC/SEELEY LAKE REGION- 341 AM MDT WED JUN 29 2011 /241 AM PDT WED JUN 29 2011/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL IDAHO AND WEST CENTRAL MONTANA. .DAY ONE...TODAY AND TONIGHT SHOWERS AND THUNDERSTORMS WILL DEVELOP BY EARLY AFTERNOON WITH THE POTENTIAL FOR LARGE HAIL AND DAMAGING WINDS. PERSONS WITH OUTDOOR ACTIVITIES SHOULD KEEP AN EYE TO THE SKY AND STAY ALERT TO LATER FORECASTS FOR POTENTIAL SEVERE WEATHER HEADLINES THROUGHOUT THE DAY. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY CONTINUED RISES IN SMALL STREAMS ARE EXPECTED AS THE TEMPERATURES REBOUND THIS WEEKEND INTO NEXT WEEK. THIS WILL LEAD TO RISING RIVER FLOWS (BOTH SMALL STREAM AND MAIN STEM RIVERS) THROUGH THE WEEK INTO THIS WEEKEND ACROSS ALL OF WESTERN MONTANA AND CENTRAL IDAHO. SOME OF THESE RIVERS AND STREAMS MAY BECOME A CONCERN BY LATER IN THE WEEKEND. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. IDZ009-292145- WESTERN LEMHI COUNTY- 341 AM MDT WED JUN 29 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL IDAHO. FOR THE LATEST INFORMATION ON WATCHES...WARNINGS AND ADVISORIES...GO TO WEATHER.GOV/MISSOULA. .DAY ONE...TODAY AND TONIGHT UNSTABLE CONDITIONS WILL ALLOW STRONG WINDS ALOFT TO MIX TO THE SURFACE ACROSS PORTIONS OF EASTERN LEMHI COUNTY. A WIND ADVISORY HAS BEEN ISSUED TO ACCOUNT FOR THESE WINDS. IN ADDITION...SCATTERED THUNDERSTORMS WILL DEVELOP THIS AFTERNOON AND EVENING AND MAY PRODUCE HAIL IN COMBINATION WITH THE WINDS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY CONTINUED RISES IN SMALL STREAMS ARE EXPECTED AS THE TEMPERATURES REBOUND THIS WEEKEND INTO NEXT WEEK. THIS WILL LEAD TO RISING RIVER FLOWS (BOTH SMALL STREAM AND MAIN STEM RIVERS) THROUGH THE WEEK INTO THIS WEEKEND ACROSS LEMHI COUNTY IDAHO. SOME OF THESE RIVERS AND STREAMS MAY BECOME A CONCERN BY LATER IN THE WEEKEND. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
The office that day
Everything else NWS Missoula, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 12:04 PM MDT | Lake Wind Advisory | MSO | Flathead, Lake, Sanders | 6 hr |
| Jun 29, 1:49 PM MDT | Special Weather Statement | MSO | Silver Bow | 26 min |
| Jun 29, 2:45 PM MDT | Special Weather Statement | MSO | Granite | 45 min |
| Jun 29, 2:48 PM MDT | Special Weather Statement | MSO | Missoula | 42 min |
| Jun 29, 3:21 AM MDT | Wind Advisory | MSO | Lemhi | 18 hr |
Nearby
Areal Flood Warnings in Idaho, 2011Every 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.