Alert archive / Idaho / Severe Thunderstorm Warnings in 2014
Severe Thunderstorm Warning 19, NWS Pocatello, ID
NWS Pocatello, ID issued this severe thunderstorm warning at Jul 21, 2014, 3:23 PM MDT for Bingham County, Bonneville County, Caribou County, Idaho. It was in force for 52 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 21, 2014, 3:23 PM MDT (21:23 UTC)
- Expired
- Jul 21, 2014, 4:15 PM MDT
- In force
- 52 min
- Issued by
- NWS Pocatello, ID
- Area
- Storm-based polygon
Counties Bingham County, ID, Bonneville County, ID, Caribou County, ID
The radar
The Pocatello radar (KSFX), 67 km from the middle of the area, began a volume at 21:27 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
Salt Lake City I, UT (KSLC), launched 12:00Z, 9.4 hours before the alert went out and 261 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
- 3238 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 163 m²/s²
- 0-3 km storm-relative helicity
- 181 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Jul 21, 2:56 PM MDT, 27 minutes earlier.
Area forecast discussion, Jul 21, 2:56 PM MDT, 27 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE POCATELLO ID ISSUED BY NATIONAL WEATHER SERVICE BOISE ID 256 PM MDT MON JUL 21 2014 .DISCUSSION...BAND OF MONSOON MOISTURE CAUGHT UP IN SOUTHWEST FLOW OVER THE AREA IS SUPPORTING SHOWERS AND THUNDERSTORMS ACROSS THE FORECAST AREA THIS AFTERNOON. DEEP MOISTURE AND MODERATE SHEAR VALUES ARE SUPPORTING SOME STRONG CELLS CAPABLE OF SIGNIFICANT HAIL AND WIND GUSTS TO 50 MPH. BUT OVERALL...THINK THAT HEAVY RAIN IS THE MAIN THREAT. THESE STORMS SHOULD CONTINUE INTO THE EVENING...BUT WEAKEN AND DIE OUT AFTER SUNSET. FLOW BECOMES A BIT MORE SOUTHERLY BY TUESDAY...PUSHING BAND OF MOISTURE FURTHER NORTH...SO THAT SHOWERS AND THUNDERSTORMS SHOULD BE CONFINED MAINLY TO THE CENTRAL IDAHO MOUNTAINS. PACIFIC LOW WILL PUSH INLAND WEDNESDAY INTO THURSDAY. THIS BRINGS DRIER AND COOLER AIR INTO THE AREA ON THURSDAY...WITH THE POTENTIAL FOR SIGNIFICANT WINDS. BEYOND THAT...DRY AND SEASONAL TEMPERATURES PREVAIL THROUGH THE WEEKEND. THE RIDGE BEGINS TO BUILD BACK NORTHWARD BY EARLY IN THE WEEK...WITH WARMING TEMPERATURES AND EVENTUALLY WITH THE POTENTIAL FOR SOME MONSOON MOISTURE TO RETURN. && .AVIATION...GENERALLY VFR. WIDESPREAD THUNDERSTORMS WITH HEAVY RAIN...AND POTENTIAL FOR GUSTS TO 50 MPH THROUGH ABOUT 03Z. ON TUESDAY...MOISTURE SHIFTS SLIGHTLY NORTHWARD WITH THE THUNDERSTORM THREAT MOSTLY CONFINED TO AREAS AROUND KSUN AND NORTHWARD. && .FIRE WEATHER...CONTINUING RED FLAG WARNING FOR ZONES 422 425 427 AND 410 THROUGH 03Z THIS EVENING WITH SCATTERED THUNDERSTORMS. SOME OF THESE PRODUCING HEAVY RAIN...BUT ABUNDANT LIGHTNING AND WIND GUSTS TO 50 MPH COULD DEFINITELY CAUSE NEW FIRE STARTS AND ERRATIC FIRE BEHAVIOR. THUNDERSTORM THREAT MOVES SLIGHTLY NORTH ON TUESDAY...AND SHOULD FAVOR UPSLOPE AREAS ON THE NORTH SIDE OF THE SNAKE RIVER PLAIN. DRIER CONDITIONS EXPECTED WEDNESDAY AND BEYOND. && .PIH WATCHES/WARNINGS/ADVISORIES... RED FLAG WARNING UNTIL 9 PM MDT MONDAY FOR IDAHO FIRE ZONES 410 422 425 AND 427. &&
In the hours before
Local storm report, Jul 21, 2:47 PM MDT, 36 minutes before
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</html>Special weather statement, Jul 21, 3:07 PM MDT, 16 minutes before
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</html>Local storm report, Jul 21, 3:09 PM MDT, 14 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
309 PM MDT MON JUL 21 2014
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0308 PM HAIL 4 N WAYAN 43.03N 111.38W
07/21/2014 E0.25 INCH BONNEVILLE ID TRAINED SPOTTER
PEA SIZE HAIL
&&
DPHELPSLocal storm report, Jul 21, 3:11 PM MDT, 12 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
311 PM MDT MON JUL 21 2014
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0308 PM HAIL 2 W ROBIN 42.58N 112.29W
07/21/2014 E0.25 INCH BANNOCK ID TRAINED SPOTTER
PEA SIZE HAIL
&&
DPHELPSSpecial weather statement, Jul 21, 3:12 PM MDT, 11 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE POCATELLO ISSUED BY NATIONAL WEATHER SERVICE BOISE ID 312 PM MDT MON JUL 21 2014 IDZ023-212200- CARIBOU HIGHLANDS ID- 312 PM MDT MON JUL 21 2014 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN BONNEVILLE AND NORTH CENTRAL CARIBOU COUNTIES UNTIL 400 PM MDT... AT 311 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 7 MILES NORTH OF WAYAN...MOVING NORTHEAST AT 40 MPH. NICKEL SIZE HAIL AND WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH THIS STORM. THIS STRONG THUNDERSTORM WILL BE NEAR... GRAYS LAKE AROUND 320 PM MDT... ALPINE CAMPGROUND...AND ALPINE AIRPORT AROUND 340 PM MDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... WHEN SAFE TO DO SO...PLEASE RELAY STORM REPORTS TO THE NATIONAL WEATHER SERVICE IN POCATELLO IDAHO VIA LOCAL LAW ENFORCEMENT. && LAT...LON 4292 11138 4314 11158 4346 11105 4304 11104 TIME...MOT...LOC 2111Z 236DEG 36KT 4309 11140 TB
Special weather statement, Jul 21, 3:14 PM MDT, 9 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE POCATELLO ISSUED BY NATIONAL WEATHER SERVICE BOISE ID 314 PM MDT MON JUL 21 2014 IDZ021>023-212200- LOWER SNAKE RIVER PLAIN ID-CARIBOU HIGHLANDS ID- SOUTH CENTRAL HIGHLANDS ID- 314 PM MDT MON JUL 21 2014 ...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL ONEIDA...WEST CENTRAL CARIBOU...CENTRAL BANNOCK AND SOUTHEASTERN POWER COUNTIES UNTIL 400 PM MDT... AT 313 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 10 MILES SOUTHEAST OF FORT HALL BANNOCK PEAK...OR 22 MILES SOUTHEAST OF NEELEY...MOVING NORTHEAST AT 35 MPH. NICKEL SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM. THIS STRONG THUNDERSTORM WILL BE NEAR... ARBON AROUND 320 PM MDT... HAWKINS RESERVOIR AROUND 330 PM MDT... MCCAMMON AROUND 350 PM MDT... POCATELLO...INKOM...AND PORTNEUF GAP AROUND 400 PM MDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... WHEN SAFE TO DO SO...PLEASE RELAY STORM REPORTS TO THE NATIONAL WEATHER SERVICE IN POCATELLO IDAHO VIA LOCAL LAW ENFORCEMENT. && LAT...LON 4231 11253 4246 11281 4293 11240 4270 11204 TIME...MOT...LOC 2113Z 216DEG 32KT 4246 11262 TB
The office that day
Everything else NWS Pocatello, ID issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 1:01 PM MDT | Special Weather Statement | PIH | Franklin | 44 min |
| Jul 21, 1:58 PM MDT | Special Weather Statement | PIH | Caribou | 62 min |
| Jul 21, 2:23 PM MDT | Special Weather Statement | PIH | Bannock | 52 min |
| Jul 21, 3:07 PM MDT | Special Weather Statement | PIH | Bonneville | 38 min |
| Jul 21, 3:12 PM MDT | Special Weather Statement | PIH | Bonneville | 48 min |
| Jul 21, 3:14 PM MDT | Special Weather Statement | PIH | Bannock | 46 min |
| Jul 21, 4:22 PM MDT | Areal Flood Advisory | PIH | Bonneville, Caribou | 3 hr |
| Jul 21, 5:28 PM MDT | Special Weather Statement | PIH | Bingham | 47 min |
Nearby
Severe Thunderstorm Warnings in Idaho, 2014Every severe thunderstorm warning in 2014
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.