Alert archive / Idaho / Freeze Warnings in 2021
Freeze Warning 2, NWS Pocatello, ID
NWS Pocatello, ID issued this freeze warning at May 10, 2021, 3:43 AM MDT for 11 counties in Idaho. It took effect at May 11, 2021, 3:00 AM MDT. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 10, 2021, 3:43 AM MDT (09:43 UTC)
- In effect from
- May 11, 2021, 3:00 AM MDT
- Expired
- May 11, 2021, 9:00 AM MDT
- In force
- 6 hr
- Issued by
- NWS Pocatello, ID
Counties Bannock County, ID, Bingham County, ID, Blaine County, ID, Bonneville County, ID, Butte County, ID, Fremont County, ID, Jefferson County, ID, Lincoln County, ID, Madison County, ID, Minidoka County, ID, Power County, ID
The radar
The Pocatello radar (KSFX), 27 km from the middle of the area, began a volume at 09:46 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
Boise Airport, ID (KBOI), launched 00:00Z, 9.7 hours before the alert went out and 285 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
- 2493 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- -7 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
210 WWUS75 KPIH 100943 NPWPIH URGENT - WEATHER MESSAGE National Weather Service Pocatello ID 343 AM MDT Mon May 10 2021 IDZ051>054-102100- /O.UPG.KPIH.FZ.A.0002.210511T0900Z-210511T1500Z/ /O.NEW.KPIH.FZ.W.0002.210511T0900Z-210511T1500Z/ /O.CON.KPIH.FR.Y.0003.000000T0000Z-210510T1500Z/ Shoshone/Lava Beds-Arco/Mud Lake Desert-Upper Snake River Plain- Lower Snake River Plain- Including the cities of Shoshone, Richfield, Carey, Mud Lake, INL, Craters of the Moon NM, Idaho Falls, Rexburg, St. Anthony, Pocatello, Blackfoot, American Falls, Shelley, and Fort Hall 343 AM MDT Mon May 10 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM MDT THIS MORNING... ...FREEZE WARNING IN EFFECT FROM 3 AM TO 9 AM MDT TUESDAY... * WHAT...For the Freeze Warning, sub-freezing temperatures as low as 31 expected. For the Frost Advisory, temperatures as low as 34 will result in frost formation. * WHERE...The Snake River plain, including the lava beds and the Mud Lake desert. * WHEN...For the Freeze Warning, from 3 AM to 9 AM MDT Tuesday. For the Frost Advisory, until 9 AM MDT this morning. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. * PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$ IDZ055-102100- /O.CON.KPIH.FR.Y.0003.000000T0000Z-210510T1500Z/ /O.CON.KPIH.FR.Y.0004.210511T0900Z-210511T1500Z/ Eastern Magic Valley- Including the cities of Burley, Rupert, Heyburn, and Oakley 343 AM MDT Mon May 10 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM MDT THIS MORNING... ...FROST ADVISORY REMAINS IN EFFECT FROM 3 AM TO 9 AM MDT TUESDAY... * WHAT...For the first Frost Advisory, temperatures as low as 36 will result in frost formation. For the second Frost Advisory, temperatures as low as 33 will result in frost formation. * WHERE...The eastern Magic Valley, including Burley, Rupert, Heyburn, and Oakley. * WHEN...For the first Frost Advisory, until 9 AM MDT this morning. For the second Frost Advisory, from 3 AM to 9 AM MDT Tuesday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. Plants that can be moved inside should be. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information from the National Weather Service visit https://weather.gov/pocatello
3 follow-up statements
047 WWUS75 KPIH 101515 NPWPIH URGENT - WEATHER MESSAGE National Weather Service Pocatello ID 915 AM MDT Mon May 10 2021 IDZ051>054-102315- /O.EXP.KPIH.FR.Y.0003.000000T0000Z-210510T1500Z/ /O.CON.KPIH.FZ.W.0002.210511T0900Z-210511T1500Z/ Shoshone/Lava Beds-Arco/Mud Lake Desert-Upper Snake River Plain- Lower Snake River Plain- Including the cities of Shoshone, Richfield, Carey, Mud Lake, INL, Craters of the Moon NM, Idaho Falls, Rexburg, St. Anthony, Pocatello, Blackfoot, American Falls, Shelley, and Fort Hall 915 AM MDT Mon May 10 2021 ...FREEZE WARNING REMAINS IN EFFECT FROM 3 AM TO 9 AM MDT TUESDAY... ...FROST ADVISORY HAS EXPIRED... * WHAT...Sub-freezing temperatures as low as 31 expected. * WHERE...The Snake River plain, including the lava beds and the Mud Lake desert. * WHEN...For the Freeze Warning, from 3 AM to 9 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. * PRECAUTIONARY/PREPAREDNESS ACTIONS... PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$ IDZ055-102315- /O.EXP.KPIH.FR.Y.0003.000000T0000Z-210510T1500Z/ /O.CON.KPIH.FR.Y.0004.210511T0900Z-210511T1500Z/ Eastern Magic Valley- Including the cities of Burley, Rupert, Heyburn, and Oakley 915 AM MDT Mon May 10 2021 ...FROST ADVISORY REMAINS IN EFFECT FROM 3 AM TO 9 AM MDT TUESDAY... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...The eastern Magic Valley, including Burley, Rupert, Heyburn, and Oakley. * WHEN...From 3 AM to 9 AM MDT Tuesday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information from the National Weather Service visit https://weather.gov/pocatello
406 WWUS75 KPIH 102029 NPWPIH URGENT - WEATHER MESSAGE National Weather Service Pocatello ID 229 PM MDT Mon May 10 2021 IDZ051>054-111500- /O.CON.KPIH.FZ.W.0002.210511T0900Z-210511T1500Z/ Shoshone/Lava Beds-Arco/Mud Lake Desert-Upper Snake River Plain- Lower Snake River Plain- Including the cities of Shoshone, Richfield, Carey, Mud Lake, INL, Craters of the Moon NM, Idaho Falls, Rexburg, St. Anthony, Pocatello, Blackfoot, American Falls, Shelley, and Fort Hall 229 PM MDT Mon May 10 2021 ...FREEZE WARNING REMAINS IN EFFECT FROM 3 AM TO 9 AM MDT TUESDAY... * WHAT...Sub-freezing temperatures as low as 29 expected. * WHERE...The Snake River plain, including the lava beds and the Mud Lake desert. * WHEN...For the Freeze Warning, from 3 AM to 9 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$ IDZ055-111500- /O.CON.KPIH.FR.Y.0004.210511T0900Z-210511T1500Z/ Eastern Magic Valley- Including the cities of Burley, Rupert, Heyburn, and Oakley 229 PM MDT Mon May 10 2021 ...FROST ADVISORY REMAINS IN EFFECT FROM 3 AM TO 9 AM MDT TUESDAY... * WHAT...Temperatures as low as 33 and light will result in frost formation. * WHERE...The eastern Magic Valley, including Burley, Rupert, Heyburn, and Oakley. * WHEN...From 3 AM to 9 AM MDT Tuesday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information from the National Weather Service visit https://weather.gov/pocatello
252 WWUS75 KPIH 111009 NPWPIH URGENT - WEATHER MESSAGE National Weather Service Pocatello ID 409 AM MDT Tue May 11 2021 IDZ051>054-111500- /O.NEW.KPIH.FR.Y.0005.210512T0900Z-210512T1500Z/ /O.CON.KPIH.FZ.W.0002.000000T0000Z-210511T1500Z/ Shoshone/Lava Beds-Arco/Mud Lake Desert-Upper Snake River Plain- Lower Snake River Plain- Including the cities of Shoshone, Richfield, Carey, Mud Lake, INL, Craters of the Moon NM, Idaho Falls, Rexburg, St. Anthony, Pocatello, Blackfoot, American Falls, Shelley, and Fort Hall 409 AM MDT Tue May 11 2021 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM MDT THIS MORNING... ...FROST ADVISORY IN EFFECT FROM 3 AM TO 9 AM MDT WEDNESDAY... * WHAT...For the Freeze Warning, sub-freezing temperatures as low as 28. For the Frost Advisory, temperatures as low as 33 will result in frost formation. * WHERE...The Snake River plain, including the lava beds and the Mud Lake desert. * WHEN...For the Freeze Warning, until 9 AM MDT this morning. For the Frost Advisory, from 3 AM to 9 AM MDT Wednesday. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$ IDZ055-111500- /O.NEW.KPIH.FR.Y.0005.210512T0900Z-210512T1500Z/ /O.CON.KPIH.FR.Y.0004.000000T0000Z-210511T1500Z/ Eastern Magic Valley- Including the cities of Burley, Rupert, Heyburn, and Oakley 409 AM MDT Tue May 11 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM MDT THIS MORNING... ...FROST ADVISORY IN EFFECT FROM 3 AM TO 9 AM MDT WEDNESDAY... * WHAT...For the first Frost Advisory, temperatures as low as 33 will result in frost formation. For the second Frost Advisory, temperatures as low as 35 will result in frost formation. * WHERE...The Eastern Magic Valley, including Burley, Rupert, Heyburn, and Oakley. * WHEN...For the first Frost Advisory, until 9 AM MDT this morning. For the second Frost Advisory, from 3 AM to 9 AM MDT Wednesday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information from the National Weather Service visit https://weather.gov/pocatello
The office that day
Everything else NWS Pocatello, ID issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 10, 3:17 AM MDT | Frost Advisory | PIH | Blaine, Cassia, Minidoka, Power | 30 hr |
| May 10, 3:17 AM MDT | Freeze Watch | PIH | Bannock, Bingham, Blaine, Bonneville, Butte, Fremont and 5 more | 26 min |
| May 10, 11:55 AM MDT | Special Weather Statement | PIH | Power | 50 min |
| May 10, 4:15 PM MDT | Special Weather Statement | PIH | Jefferson | 60 min |
| May 10, 4:30 PM MDT | Special Weather Statement | PIH | Fremont | 60 min |
Nearby
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.