Alert archive / Minnesota / Frost Advisories in 2010

Frost Advisory 2, NWS Grand Forks, ND

May 8, 20105 counties in Minnesota

NWS Grand Forks, ND issued this frost advisory at May 8, 2010, 3:56 AM CDT for 5 counties in Minnesota. It took effect at May 9, 2010, 3:00 AM CDT. It was in force for .

The area

The counties it named.

The facts

Issued
May 8, 2010, 3:56 AM CDT (08:56 UTC)
In effect from
May 9, 2010, 3:00 AM CDT
Expired
May 8, 2010, 3:00 PM CDT
In force
Issued by
NWS Grand Forks, ND

Counties Beltrami County, MN, Kittson County, MN, Lake of the Woods County, MN, Marshall County, MN, Roseau County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 161 km from the middle of the area, began a volume at 08:54 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 00:00Z, 8.9 hours before the alert went out and 441 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-pSkew-T log-p diagram, Minneapolis, MN at 00:00Z on 2010-05-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 2010-05-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -6 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
474 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
-6 m²/s²
0-3 km storm-relative helicity
25 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

Everything else NWS Grand Forks, ND issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 8, 3:56 AM CDTFreeze WarningFGFBecker, Beltrami, Clay, Clearwater, Grant, Hubbard and 12 more28 hr
May 7, 9:24 PM CDTFreeze WarningFGFBenson, Cavalier, Eddy, Nelson, Ramsey, Towner and 1 more12 hr

Nearby

Frost Advisories in Minnesota, 2010Every frost advisory in 2010

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.