Alert archive / Minnesota / Frost Advisories in 2021
Frost Advisory 6, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this frost advisory at May 28, 2021, 2:11 PM CDT for Jackson County, Minnesota; Dickinson County, Iowa. It took effect at May 29, 2021, 12:00 AM CDT. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- May 28, 2021, 2:11 PM CDT (19:11 UTC)
- In effect from
- May 29, 2021, 12:00 AM CDT
- Expired
- May 29, 2021, 7:00 AM CDT
- In force
- 7 hr
- Issued by
- NWS Sioux Falls, SD
Counties Dickinson County, IA, Jackson County, MN
The radar
The Sioux Falls radar (KFSD), 127 km from the middle of the area, began a volume at 19:10 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
Minneapolis, MN (KMPX), launched 12:00Z, 7.2 hours before the alert went out and 192 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
- 882 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- -11 m²/s²
- 0-3 km storm-relative helicity
- 26 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
623 WWUS73 KFSD 281911 NPWFSD URGENT - WEATHER MESSAGE National Weather Service Sioux Falls SD 211 PM CDT Fri May 28 2021 IAZ003-MNZ090-290400- /O.NEW.KFSD.FR.Y.0006.210529T0500Z-210529T1200Z/ Dickinson-Jackson- 211 PM CDT Fri May 28 2021 ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 7 AM CDT SATURDAY... * WHAT...Temperatures as low as 35 will result in frost formation. * WHERE...In Iowa, Dickinson County. In Minnesota, Jackson County. * WHEN...From midnight tonight to 7 AM CDT Saturday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information from the National Weather Service visit https://weather.gov/siouxfalls
2 follow-up statements
237 WWUS73 KFSD 290852 NPWFSD URGENT - WEATHER MESSAGE National Weather Service Sioux Falls SD 352 AM CDT Sat May 29 2021 IAZ003-MNZ090-291200- /O.CON.KFSD.FR.Y.0006.000000T0000Z-210529T1200Z/ Dickinson-Jackson- 352 AM CDT Sat May 29 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 7 AM CDT THIS MORNING... * WHAT...Temperatures as low as 36 degrees will result in frost formation. * WHERE...In Iowa, Dickinson County. In Minnesota, Jackson County. * WHEN...Until 7 AM CDT this morning. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information from the National Weather Service visit https://weather.gov/siouxfalls
768 WWUS73 KFSD 291147 NPWFSD URGENT - WEATHER MESSAGE National Weather Service Sioux Falls SD 647 AM CDT Sat May 29 2021 IAZ003-MNZ090-291300- /O.EXP.KFSD.FR.Y.0006.000000T0000Z-210529T1200Z/ Dickinson-Jackson- 647 AM CDT Sat May 29 2021 ...FROST ADVISORY WILL EXPIRE AT 7 AM CDT THIS MORNING... With increasing cloud cover and the sun having risen, frost development is no longer a significant threat. Thus the frost advisory will be allowed to expire at 7 AM. $$ For more information from the National Weather Service visit https://weather.gov/siouxfalls
Nearby
Frost Advisories in Minnesota, 2021Frost Advisories in Iowa, 2021Every frost advisory in 2021
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.