Alert archive / Idaho / Special Weather Statements in 2012

Special Weather Statement, NWS Pocatello, ID

July 11, 2012Oneida County, Idaho

NWS Pocatello, ID issued this special weather statement at Jul 11, 2012, 5:34 PM MDT for Oneida County, Idaho. It was in force for 26 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
Jul 11, 2012, 5:34 PM MDT (23:34 UTC)
Expired
Jul 11, 2012, 6:00 PM MDT
In force
26 min
Issued by
NWS Pocatello, ID

County Oneida County, ID

The radar

The Salt Lake City radar (KMTX), 97 km from the middle of the area, began a volume at 23:37 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

Riverton, WY (KRIW), launched 12:00Z, 11.6 hours before the alert went out and 332 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-pSkew-T log-p diagram, Riverton, WY at 12:00Z on 2012-07-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Riverton, WY at 12:00Z on 2012-07-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 13 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
3038 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
13 m²/s²
0-3 km storm-relative helicity
72 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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 Pocatello, ID wrote its last area forecast discussion before this special weather statement went out at Jul 11, 1:31 PM MDT, 4 hours 3 minutes earlier.

Area forecast discussion, Jul 11, 1:31 PM MDT, 4 hours 3 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
131 PM MDT WED JUL 11 2012

.DISCUSSION...MAIN AREA OF CONVECTION HAS MOVED INTO WY THIS
AFTN... HOWEVER...MONSOON MOISTURE REMAINS OVER THE FCST AREA.
ISOLATED TO WIDELY SCATTERED TSTMS CAN STILL BE EXPECTED ACROSS
THE AREA...DIMINISHING THIS EVENING. VERY LITTLE RAINFALL WITH
THEE TSTMS...BUT QUITE A BIT OF LIGHTNING STRIKES. SEVERAL FIRE
STARTS SO FAR...WITH TWO VISIBLE FROM THE OFFICE.

MONSOON MOISTURE WILL BE DISPLACED TO THE EAST AND SOUTH OF THE
AREA ON THU...SO ONLY LOOKING FOR ISOLD MOUNTAIN TSTMS THU
AFTERNOON. BY FRI...MONSOON MOISTURE MOVES BACK IN FROM THE SOUTH.
TSTMS WILL AGAIN DEVELOP BY LATE FRI MORNING...AND BECOME MORE
NUMEROUS THRU THE AFTERNOON. THIS TREND WILL CONTINUE THRU SUNDAY.
BY MON...THE NORTHERN STREAM UPPER LOW DROPS INTO WA. THE NORTHERN
STREAM FLOW WILL RESULT IN LESS MOISTURE AND MORE MODERATE TEMPS.
ONLY EXPECTING ISOLD MAINLY MTN TSTMS THRU WED. HEDGES

&&

.AVIATION...CONVECTIVE THREAT CONTINUES THIS AFTERNOON INTO EARLY
EVENING. AIRMASS SUPPORTS MIXED DRY/WET STORMS WITH POTENTIAL
FOR GUSTY OUTFLOW WINDS TO ROUGHLY 45KTS. WEAK SHORTWAVE ROTATING
NORTHEAST FROM SOUTHEAST OREGON MAY SPARK THUNDERSTORMS BY MID
MORNING OVER CENTRAL MTNS INCLUDING KSUN BUT GREATEST THREAT WILL BE
DURING THE AFTERNOON. AS WITH PREVIOUS DAYS...CONVECTION APPEARS TO
DROP OFF AFTER SUNSET. THURSDAY WILL SEE MOSTLY SUNNY AND VFR
CONDITIONS AT AREA AIRPORTS WITH ISOLATED MOUNTAIN THUNDERSTORMS.
DMH/PRESTON

&&

.FIRE WEATHER...RED FLAG WARNING TO REMAIN IN EFFECT THROUGH 9 PM
THIS EVENING DUE TO THUNDERSTORMS ACROSS THE DISTRICT. THUNDERSTORMS
CONTINUE TO DEVELOPED AND MOVE ACROSS THE AREA THIS AFTERNOON.
SURFACE WINDS HAVE BEEN MORE EASTERLY THAN ORIGINALLY ANTICIPATED
BUT SWITCH AROUND TO SOUTHWEST PRIOR TO THUNDERSTORMS...THUS ERRATIC
BEHAVIOR TO INFLUENCE FIRE FIGHTING.  GUSTY WINDS NEAR THUNDERSTORMS
MAY REACH UP TO 45 MPH.  DUE TO SWIFT NORTHEAST MOVEMENT OF STORMS
AND DRY SURFACE RH...VERY LITTLE RAINFALL REACHING THE GROUND.
THURSDAY APPEARS SIMILAR AGAIN WITH RESPECT TO THUNDERSTORM
DEVELOPMENT OVER THE DISTRICT BUT TRENDING MORE ISOLATED AND OVER
THE MOUNTAINS.

A COUPLE FEATURES OF INTEREST MAY MAKE FOR A MORE INTERESTING END OF
THE WEEK/WEEKEND. PAIR OF UPPER LOWS BEGINNING TO INCREASE MOISTURE
SURGE THROUGH THE GREAT BASIN FOR FRIDAY THROUGH SUNDAY. SOUTHERN
LOW OFF BAJA CALIFORNIA ALREADY SURGING MOISTURE NORTH THROUGH
ARIZONA PER SAT IMAGERY WHILE NORTHERN LOW APPROACHES COAST AND IS
PROGGED TO FURTHER DEEPEN SOUTHERLY REACH. MOISTURE SURGES INTO
IDAHO FRIDAY THROUGH SUNDAY FOR INCREASED COVERAGE OF STORMS ALONG
WITH BREAKDOWN OF UPPER RIDGE AS NORTHERN LOW EXERTS INFLUENCE
ACROSS THE REGION. AT THIS POINT...EXPECT RED FLAG CONDITIONS EACH
DAY SOMEWHERE WITHIN THE DISTRICT PENDING BEST CHANCES FOR
THUNDERSTORM DEVELOPMENT. DMH/PRESTON

&&

.PIH WATCHES/WARNINGS/ADVISORIES...
RED FLAG WARNING UNTIL 9 PM MDT THIS EVENING BELOW 6000 FEET FOR
THE IDZ413-476.

RED FLAG WARNING UNTIL 9 PM MDT THIS EVENING IDZ409-410.

RED FLAG WARNING UNTIL 9 PM MDT THIS EVENING BELOW 5500 FEET FOR
THE IDZ412.

RED FLAG WARNING UNTIL 9 PM MDT THIS EVENING BELOW 6500 FEET FOR
THE IDZ477.

&&
Hazardous weather outlook, Jul 11, 4:02 AM MDT, 13 hours 32 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE POCATELLO ID
402 AM MDT WED JUL 11 2012

IDZ017>025-031-032-121015-
EASTERN MAGIC VALLEY-SAWTOOTH MOUNTAINS-UPPER SNAKE HIGHLANDS-
UPPER SNAKE RIVER PLAIN-LOWER SNAKE RIVER PLAIN-
SOUTH CENTRAL HIGHLANDS-CARIBOU HIGHLANDS-
CACHE VALLEY/IDAHO PORTION-WASATCH MOUNTAINS/IDAHO PORTION-
BIG AND LITTLE WOOD RIVER REGION-LOST RIVER/PAHSIMEROI-
402 AM MDT WED JUL 11 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN IDAHO.

.DAY ONE...TODAY AND TONIGHT

ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED TODAY OVER MOST
OF EASTERN IDAHO. THESE STORMS ARE EXPECTED TO PRODUCE BRIEF HEAVY
RAIN AND GUSTY OUTFLOW WINDS. HIGHER THAN NORMAL DAYTIME
TEMPERATURES WILL CONTINUE WITH HIGHS APPROACHING 100 DEGREES IN
THE SNAKE RIVER PLAIN.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THUNDERSTORMS ARE EXPECTED ALMOST EVERY DAY WITH THE POSSIBLE
EXCEPTION OF THURSDAY. STORMS ARE EXPECTED TOR PRODUCE BRIEF HEAVY
RAIN AND GUSTY OUTFLOW WINDS...ESPECIALLY OVER HIGHER
TERRAIN...INTO AT LEAST EARLY NEXT WEEK. ABOVE NORMAL
TEMPERATURES WILL CONTINUE THROUGH FRIDAY WITH HIGH TEMPERATURES
NEAR 100 DEGREES. TEMPERATURES WILL MODERATE SOMEWHAT OVER THE
WEEKEND WITH INCREASED CLOUD COVER.

.SPOTTER INFORMATION STATEMENT...

WE ASK TRAINED SPOTTERS AND CITIZENS TO REPORT SIGNIFICANT
WEATHER CONDITIONS WHEN IT IS SAFE TO DO SO. THESE CONDITIONS MAY
INCLUDE HAIL...TORNADOES...STRONG WIND...DUST STORMS...SNOWFALL...
EXTREME COLD TEMPERATURES...FREEZING RAIN OR HEAVY RAIN...DENSE
FOG...AND FLOODING OR ICE JAMS. INFORMATION ABOUT THESE HAZARDOUS
CONDITIONS SHOULD BE CALLED INTO YOUR NATIONAL WEATHER SERVICE
OFFICE IN POCATELLO USING THE 1-800 SEVERE WEATHER HOTLINE...OR
208-233-0834.

In the hours before

Special weather statement, Jul 11, 5:34 PM MDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 10, 6:34 PM MDTSpecial Weather StatementPIHJefferson26 min
Jul 11, 4:05 AM MDTRed Flag WarningPIHBannock, Bear Lake, Bingham, Bonneville, Butte, Caribou and 10 more17 hr

Nearby

Special Weather Statements in Idaho, 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.