Alert archive / Idaho / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 35, NWS Pocatello, ID

June 27, 2004Oneida County, Idaho

NWS Pocatello, ID issued this severe thunderstorm warning at Jun 27, 2004, 4:52 PM MDT for Oneida County, Idaho. It was in force for 38 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 27, 2004, 4:52 PM MDT (22:52 UTC)
Expired: Jun 27, 2004, 5:30 PM MDT
In force: 38 min
Issued by: NWS Pocatello, ID
Area: Counties, with a storm outline in the text

County Oneida County, ID

The radar

The Pocatello radar (KSFX), 91 km from the middle of the area, began a volume at 22:53 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Salt Lake City I, UT (KSLC), launched 12:00Z, 10.9 hours before the alert went out and 175 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: 3 J/kg
Mixed-layer CIN: -251 J/kg
Mixed-layer LCL: 1925 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: -19 m²/s²
0-3 km storm-relative helicity: 20 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.

953 
WUUS55 KPIH 272252
SVRPIH
IDC071-272330-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE POCATELLO/IDAHO FALLS ID
451 PM MDT SUN JUN 27 2004

THE NATIONAL WEATHER SERVICE IN POCATELLO/IDAHO FALLS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTH CENTRAL ONEIDA COUNTY IN IDAHO
  THIS INCLUDES THE CITY OF BUIST

* UNTIL 530 PM MDT

* AT 448 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL.  THIS  
  STORM WAS LOCATED NEAR BUIST...AND MOVING NORTH AT 10 MPH.

* THE SEVERE THUNDERSTORM WILL OTHERWISE REMAIN OVER MAINLY RURAL
  AREAS OF THE INDICATED COUNTY.

LAT...LON 4220 11247 4220 11223 4246 11230 4251 11249

$$

HEDGES

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Jun 27, 2:15 PM MDT, 2 hours 37 minutes earlier.

Area forecast discussion, Jun 27, 2:15 PM MDT, 2 hours 37 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
215 PM MDT SUN JUN 27 2004

.DISCUSSION...
CONVECTION FIRING ACROSS THE MOUNTAINS EARLY THIS AFTERNOON AS A
SHORT WAVE FEATURE WAS NOTED WORKING NORTH THROUGH CNTRL NEVADA
TOWARDS THE MOIST/UNSTABLE AIRMASS CURRENTLY IN PLACE OVER SRN
IDAHO.  THIS WAVE TO HELP SUSTAIN CONVECTIVE ACTIVITY THROUGH THE
EVENING BEFORE WEAKENING AFTER MIDNIGHT. PATTERN UNDERGOING A BIT OF
A CHANGE WITH BAGGY TROUGH ANCHORING ALONG THE CALIFORNIA COAST BY
MID WEAK WITH DRIER AND MORE STABLE CONDITIONS BUILDING INTO THE
REGION FROM THE SOUTH. BY WEDNESDAY HAVE GENERALLY TRIMMED
CONVECTIVE ACTIVITY BACK CONFINING IT TO MOUNTAINS FOR THE DURATION
OF THE FORECAST PERIOD AS BAGGY TROUGH REMAINS NEAR CALIFORNIA AND
INCREASING WESTERLY FLOW PENETRATES WRN CANADA PERHAPS SIGNALING A
PATTERN CHANGE BEYOND THE 4TH OF JULY WEEKEND. HUSTON
&&

.PIH WATCHES/WARNING/ADVISORIES...NONE.
&&

Hazardous weather outlook, Jun 27, 6:00 AM MDT, 10 hours 52 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE POCATELLO ID
600 AM MDT SUN JUN 27 2004

IDZ017>023-031-032-281200-
EASTERN MAGIC VALLEY-BIG AND LITTLE WOOD RIVER REGION-
SAWTOOTH MOUNTAINS-LOST RIVER/PAHSIMEROI-UPPER SNAKE HIGHLANDS-
UPPER SNAKE RIVER PLAIN-LOWER SNAKE RIVER PLAIN-
SOUTH CENTRAL HIGHLANDS-CARIBOU HIGHLANDS-
540 AM MDT MON JUN 28 2004

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN IDAHO

.DAY ONE...
NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...
NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

SPOTTER INFORMATION STATEMENT...
WE ASK ALL TRAINED SPOTTERS TO REPORT SIGNIFICANT WEATHER
CONDITIONS. THIS INFORMATION SHOULD BE CALLED INTO THE LOCAL
NATIONAL WEATHER SERVICE OFFICE IN POCATELLO USING THE 1-800 SEVERE
WEATHER HOTLINE...OR OTHER STANDARD OPERATING PROCEDURES.

In the hours before

Local storm report, Jun 27, 3:14 PM MDT, 1 hour 38 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO/IDAHO FALLS ID
314 PM MDT SUN JUN 27 2004

..TIME...   ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE...   ....MAG....     ..COUNTY LOCATION...ST.. ...SOURCE....
            ..REMARKS..

0240 PM     HAIL             2 W HEGLAR              42.47N 113.19W
06/27/2004  0.25 INCH        CASSIA             ID   TRAINED SPOTTER

            PEA SIZED HAIL REPORTED ON NORTHERN PERIPHERY OF STORM
            WITH VIL 10-15. MAX STORM VIL 45-50 SOUTH OF SPOTTER
            LOCATION.

0300 PM     HAIL             BONE                    43.32N 111.80W
06/27/2004  1.00 INCH        BONNEVILLE         ID   TRAINED SPOTTER

            VIL 40

&&

MH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 27, 1:43 PM MDT	Severe Thunderstorm Warning	PIH	Cassia	62 min
Jun 27, 2:48 PM MDT	Severe Thunderstorm Warning	PIH	Bingham, Bonneville	27 min
Jun 27, 5:45 PM MDT	Severe Thunderstorm Warning	PIH	Bonneville	45 min

Nearby

Severe Thunderstorm Warnings in Idaho, 2004 Every severe thunderstorm warning in 2004

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.