Alert archive / Idaho / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 27, NWS Pocatello, ID

September 13, 2001Bingham County, Power County, Idaho

NWS Pocatello, ID issued this severe thunderstorm warning at Sep 13, 2001, 12:46 PM MDT for Bingham County, Power County, Idaho. It was in force for 29 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: Sep 13, 2001, 12:46 PM MDT (18:46 UTC)
Expired: Sep 13, 2001, 1:15 PM MDT
In force: 29 min
Issued by: NWS Pocatello, ID
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Bingham County, ID, Power County, ID

The radar

The Pocatello radar (KSFX), 38 km from the middle of the area, began a volume at 18:50 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

Elko, NV (KLKN), launched 12:00Z, 6.8 hours before the alert went out and 240 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: 103 J/kg
Mixed-layer CIN: -222 J/kg
Mixed-layer LCL: 1034 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 87 m²/s²
0-3 km storm-relative helicity: 137 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

174 
WUUS55 KPIH 131847
SVRPIH
IDC011-077-131915-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE POCATELLO/IDAHO FALLS ID
1246 PM MDT THU SEP 13 2001

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

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN BINGHAM COUNTY IN IDAHO
  CENTRAL POWER COUNTY IN IDAHO
  THIS INCLUDES THE CITIES OF...AMERICAN FALLS...NEELEY...ABERDEEN

* UNTIL 115 PM MDT

* AT 1245 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER NEELEY...OR ABOUT 4 MILES WEST OF
  NEELEY...MOVING NORTHEAST AT 25 MPH.

1 INCH HAIL AND WIND GUSTS IN EXCESS OF 60 MPH ARE POSSIBLE WITH THIS 
SEVERE THUNDERSTORM. IF YOU ARE IN THE PATH OF THE STORM...PUT YOUR 
CAR IN A GARAGE AND MOVE TO A SUBSTANTIAL SHELTER.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN POCATELLO/IDAHO FALLS.

LAT...LON 4269 11311 4262 11288 4299 11263 4308 11292

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 Sep 13, 9:40 AM MDT, 3 hours 6 minutes earlier.

Area forecast discussion, Sep 13, 9:40 AM MDT, 3 hours 6 minutes before

SOUTHEAST IDAHO AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO/IDAHO FALLS ID
940 AM MDT THU SEP 13 2001

UPPER CLOSED LOW OVER NW NV THIS MORNING FORECAST TO TRACK NE AND
BECOME AN OPEN POSITIVE TILT TROF ACROSS EASTERN ID TONIGHT. CURRENT
RADAR LOOP SHOWING TO BANDS OF CONVECTIVE PRECIP JUST SOUTH OF THE
BORDER. THE FIRST BAND OF SHOWERS SOUTH OF TWF IS ASSOCIATED WITH
THE NOSE OF A 7H JET WHICH IS FCST TO WEAKEN AND SHIFT EAST THIS
AFTN. THE SECOND BAND IN SW ID IS ASSOCIATED WITH THE ACTUAL UPPER
LOW AND COLD POOL ALOFT. THIS FEATURE WILL SHIFT EAST INTO OUR
FCST/A LATE THIS AFTN AND LIKELY PRODUCE SHOWERS ACROSS E ID INTO
THE EVENING HOURS. CURRENT FCST ON TRACK HOWEVER WILL MAKE A MINOR
UPDATES TO CORRECT FOR NEW FORMAT AND REFRESH WORDING.

WINTHER

BYI 75/56/78 632

.KSFX WSR-88D...OPERATIONAL...VCP 21.

PIH EE 076/052 075/048 076 09632

.PIH...NONE.

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 13, 11:37 AM MDT	Severe Thunderstorm Warning	PIH	Cassia	38 min
Sep 13, 12:10 PM MDT	Severe Thunderstorm Warning	PIH	Blaine, Power	35 min
Sep 13, 2:44 PM MDT	Severe Thunderstorm Warning	PIH	Bingham, Bonneville	31 min
Sep 13, 3:16 PM MDT	Severe Thunderstorm Warning	PIH	Bonneville, Madison	29 min
Sep 13, 4:14 PM MDT	Severe Thunderstorm Warning	PIH	Teton	31 min
Sep 13, 4:32 PM MDT	Severe Thunderstorm Warning	PIH	Bannock, Bingham, Power	28 min

Nearby

Severe Thunderstorm Warnings in Idaho, 2001 Every severe thunderstorm warning in 2001

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.