Alert archive / Montana / Special Weather Statements in 2012
Special Weather Statement, NWS Missoula, MT
NWS Missoula, MT issued this special weather statement at Jun 23, 2012, 6:18 PM MDT for Missoula County, Montana. It was in force for 27 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
- Jun 23, 2012, 6:18 PM MDT (00:18 UTC)
- Expired
- Jun 23, 2012, 6:45 PM MDT
- In force
- 27 min
- Issued by
- NWS Missoula, MT
County Missoula County, MT
The radar
The Missoula radar (KMSX), 33 km from the middle of the area, began a volume at 00:20 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 00:00Z, 0.3 hours before the alert went out and 167 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
- 106 J/kg
- Mixed-layer CIN
- -16 J/kg
- Mixed-layer LCL
- 1228 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- -144 m²/s²
- 0-3 km storm-relative helicity
- -99 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.3
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>What forecasters said that day
The local office's own words before this special weather statement 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 special weather statement went out at Jun 23, 3:01 PM MDT, 3 hours 17 minutes earlier.
Area forecast discussion, Jun 23, 3:01 PM MDT, 3 hours 17 minutes before
Area Forecast Discussion
National Weather Service Missoula MT
301 PM MDT Sat Jun 23 2012
.UPDATE...issued a red flag warning for the beaverhead deerlodge
region for Sunday afternoon.
&&
.DISCUSSION...Fuels are at critical levels in the beaverhead
deerlodge NF. This combined with very low humidities and strong
gusty winds for Sunday afternoon a red flag warning has been
issued. Conditions may be similar on Monday afternoon.
&&
.AVIATION...The development of strong thunderstorms will occur
today, likely after 23/1800Z and continuing well after sunset
tonight. Storms today will be capable of producing erratic, gusty
winds...hail...and very heavy rainfall. All terminals are expected
to be impacted by convection, however KGPI KGPI and locations
across NW Montana could see the strongest and most widespread
storm development.
&&
.PREV DISCUSSION... /ISSUED 1009 AM MDT Sat Jun 23 2012/
..strong to severe thunderstorms possible in northwest Montana
this afternoon and evening...
DISCUSSION...Thunderstorms will occur today from I-90 northward
with the strongest storms possible in northwest Montana including
Libby...Kalispell and the Glacier NP region. Impacts:
Possible large hail over 1" diameter
Possible very heavy rain and possible flash flooding
strong gusty outflow winds
What is causing this is a short wave spinning of a large upper
low will interact with this region of instability and very good
shear to produce the potential of some of these storms becoming
severe with 1 inch hail or greater. Stay tuned to the NWS for
potential warnings.
Sunday a few storms are possible in far northwest Montana but
convection will tail off by evening and lead to improving
conditions through Monday. Late Sunday into Monday will be
pleasant and warm days with temperatures in the 80s
Cold front will pass through the region Tuesday and Tuesday night.
Strong winds could impact Flathead lake with wind gusts in the 40
mph range.
Wednesday and Thursday will be the nicest days of next week under
the influence of a strengthening ridge.
AVIATION...The development of strong thunderstorms will occur
today, likely after 23/1800Z and continuing well after sunset
tonight. Storms today will be capable of producing erratic, gusty
winds...hail...and very heavy rainfall. All terminals are expected
to be impacted by convection, however KGPI KGPI and locations
across NW Montana could see the strongest and most widespread
storm development.
&&
.MSO WATCHES/WARNINGS/ADVISORIES...
MT...RED FLAG WARNING from Noon to 9 PM MDT Sunday
Bitterroot/Sapphire Mountains...Butte/Blackfoot Region.
ID...None.
&&In the hours before
Special weather statement, Jun 23, 2:43 PM MDT, 3 hours 35 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MISSOULA MT 243 PM MDT SAT JUN 23 2012 MTZ006-043-232130- BITTERROOT/SAPPHIRE MOUNTAINS-BLACKFOOT REGION- 243 PM MDT SAT JUN 23 2012 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN GRANITE AND SOUTHEASTERN MISSOULA COUNTIES UNTIL 330 PM MDT... AT 242 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 14 MILES SOUTHEAST OF BONNER...OR 20 MILES EAST OF MISSOULA...MOVING NORTH AT 10 MPH. HAIL UP TO ONE-HALF INCH IN DIAMETER IS EXPECTED WITH THIS STORM... ALONG WITH HEAVY RAIN. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...POTOMAC... GREENOUGH...TWIN CREEKS AND CLEARWATER. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF THREATENING WEATHER APPROACHES YOUR AREA...GO INDOORS AND STAY AWAY FROM WINDOWS. IF YOU ARE CAUGHT OUTSIDE...MOVE TO A WELL PROTECTED AREA. IN ADDITION...THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. && LAT...LON 4703 11375 4702 11331 4646 11352 4646 11380 TIME...MOT...LOC 2043Z 189DEG 9KT 4678 11360
Special weather statement, Jun 23, 3:56 PM MDT, 2 hours 22 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MISSOULA MT 356 PM MDT SAT JUN 23 2012 MTZ001-232245- KOOTENAI/CABINET REGION- 356 PM MDT SAT JUN 23 2012 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN SANDERS AND CENTRAL LINCOLN COUNTIES UNTIL 445 PM MDT... AT 348 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 25 MILES EAST OF NOXON...OR 25 MILES SOUTHEAST OF LIBBY...MOVING NORTH AT 15 MPH. HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...LIBBY AND KOOTENAI FALLS. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF THREATENING WEATHER APPROACHES YOUR AREA...GO INDOORS AND STAY AWAY FROM WINDOWS. IF YOU ARE CAUGHT OUTSIDE...MOVE TO A WELL PROTECTED AREA. IN ADDITION...THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. && LAT...LON 4870 11589 4851 11494 4787 11522 4825 11573 TIME...MOT...LOC 2156Z 186DEG 15KT 4812 11526 KITSMILLER
Local storm report, Jun 23, 4:12 PM MDT, 2 hours 6 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
412 PM MDT SAT JUN 23 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0410 PM HAIL LIBBY 48.39N 115.56W
06/23/2012 E0.25 INCH LINCOLN MT LAW ENFORCEMENT
.25 INCH HAIL REPORTED BY LAW ENFORCEMENT IN LIBBY
&&
LBRSpecial weather statement, Jun 23, 4:21 PM MDT, 1 hour 57 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MISSOULA MT
421 PM MDT SAT JUN 23 2012
MTZ007-043-232315-
BLACKFOOT REGION-BUTTE/PINTLAR REGION-
421 PM MDT SAT JUN 23 2012
...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN POWELL COUNTY UNTIL
515 PM MDT...
AT 417 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 9 MILES NORTHWEST OF OVANDO...OR 31 MILES NORTH
OF DRUMMOND...MOVING NORTH AT 30 MPH.
HAIL UP TO ONE-HALF INCH IN DIAMETER IS EXPECTED WITH THIS
STORM...ALONG WITH VERY HEAVY RAIN.
LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...MAINLY RURAL AREAS
OF NORTHERN POWELL COUNTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF THREATENING WEATHER APPROACHES YOUR AREA...GO INDOORS AND STAY
AWAY FROM WINDOWS. IF YOU ARE CAUGHT OUTSIDE...MOVE TO A WELL
PROTECTED AREA.
&&
LAT...LON 4703 11321 4701 11330 4718 11330 4718 11341
4760 11320 4761 11315 4757 11310 4749 11311
4748 11305 4725 11305
TIME...MOT...LOC 2221Z 201DEG 28KT 4714 11327Special weather statement, Jun 23, 5:51 PM MDT, 27 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MISSOULA MT 551 PM MDT SAT JUN 23 2012 MTZ005-006-043-240030- BITTERROOT/SAPPHIRE MOUNTAINS-BLACKFOOT REGION-MISSOULA/BITTERROOT VALLEYS- 551 PM MDT SAT JUN 23 2012 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN RAVALLI... NORTHWESTERN GRANITE AND CENTRAL MISSOULA COUNTIES UNTIL 630 PM MDT... AT 548 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 13 MILES SOUTHEAST OF BONNER...OR 17 MILES SOUTHEAST OF MISSOULA...MOVING NORTH AT 20 MPH. HAIL UP TO ONE-HALF INCH IN DIAMETER IS EXPECTED WITH THIS STORM... ALONG WITH HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...BONNER...WEST RIVERSIDE BURN AREA...CLINTON...TURAH...POTOMAC AND TWIN CREEKS. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF THREATENING WEATHER APPROACHES YOUR AREA...GO INDOORS AND STAY AWAY FROM WINDOWS. IF YOU ARE CAUGHT OUTSIDE...MOVE TO A WELL PROTECTED AREA. IN ADDITION...THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. && LAT...LON 4703 11400 4709 11355 4665 11358 4662 11384 TIME...MOT...LOC 2351Z 170DEG 17KT 4673 11373
Special weather statement, Jun 23, 6:18 PM MDT, 0 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MISSOULA MT 618 PM MDT SAT JUN 23 2012 MTZ003>005-043-240045- BLACKFOOT REGION-FLATHEAD/MISSION VALLEYS-LOWER CLARK FORK REGION-MISSOULA/BITTERROOT VALLEYS- 618 PM MDT SAT JUN 23 2012 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN SANDERS...SOUTHERN LAKE AND WESTERN MISSOULA COUNTIES UNTIL 645 PM MDT... AT 615 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 6 MILES NORTH OF FRENCHTOWN...OR 21 MILES NORTHWEST OF MISSOULA...MOVING NORTH AT 25 MPH. HAIL UP TO THE SIZE OF PENNIES IS EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...RAVALLI...DIXON... SAINT IGNATIUS AND MOIESE. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. && LAT...LON 4742 11439 4740 11406 4701 11416 4703 11442 TIME...MOT...LOC 0018Z 186DEG 22KT 4712 11427
The office that day
Everything else NWS Missoula, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 23, 6:23 PM MDT | Special Weather Statement | MSO | Flathead | 52 min |
| Jun 23, 6:47 PM MDT | Special Weather Statement | MSO | Missoula | 43 min |
| Jun 23, 7:14 PM MDT | Severe Thunderstorm Warning | MSO | Lake, Missoula, Sanders | 31 min |
| Jun 23, 7:18 PM MDT | Areal Flood Advisory | MSO | Missoula | 94 min |
| Jun 23, 7:39 PM MDT | Severe Thunderstorm Warning | MSO | Lake, Missoula | 51 min |
| Jun 23, 7:52 PM MDT | Severe Thunderstorm Warning | MSO | Flathead, Lake, Missoula, Powell | 38 min |
| Jun 23, 8:21 PM MDT | Severe Thunderstorm Warning | MSO | Flathead, Missoula, Powell | 39 min |
Nearby
Special Weather Statements in Montana, 2012Every special weather statement in 2012
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.