Alert archive / Michigan / Areal Flood Advisories in 2021

Areal Flood Advisory 9, NWS Grand Rapids, MI

June 26, 20215 counties in Michigan

NWS Grand Rapids, MI issued this areal flood advisory at Jun 26, 2021, 11:37 AM EDT for 5 counties in Michigan. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued: Jun 26, 2021, 11:37 AM EDT (15:37 UTC)
Expired: Jun 26, 2021, 3:11 PM EDT
In force: 4 hr
Issued by: NWS Grand Rapids, MI
Area: Storm-based polygon

Counties Allegan County, MI, Ionia County, MI, Kent County, MI, Montcalm County, MI, Ottawa County, MI

The radar

The Grand Rapids radar (KGRR), 8 km from the middle of the area, began a volume at 15:36 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

Detroit, MI (KDTX), launched 12:00Z, 3.6 hours before the alert went out and 177 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: 492 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 493 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 90 m²/s²
0-3 km storm-relative helicity: 139 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.5

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Grand Rapids, MI wrote its last area forecast discussion before this areal flood advisory went out at Jun 26, 7:25 AM EDT, 4 hours 12 minutes earlier.

Area forecast discussion, Jun 26, 7:25 AM EDT, 4 hours 12 minutes before

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Hazardous weather outlook, Jun 26, 4:17 AM EDT, 7 hours 20 minutes before

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In the hours before

Local storm report, Jun 26, 7:23 AM EDT, 4 hours 14 minutes before

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Local storm report, Jun 26, 11:32 AM EDT, 5 minutes before

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The office that day

Everything else NWS Grand Rapids, MI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 25, 8:57 PM EDT	Marine Dense Fog Advisory	GRR		14 hr
Jun 26, 3:32 AM EDT	Small Craft Advisory	GRR		36 hr
Jun 26, 12:56 PM EDT	Special Marine Warning	GRR		3 hr
Jun 26, 2:36 PM EDT	Areal Flood Advisory	GRR	Muskegon	4 hr
Jun 26, 3:10 PM EDT	Areal Flood Warning	GRR	Allegan, Barry, Ionia, Kalamazoo, Kent, Montcalm and 2 more	43 hr
Jun 26, 3:25 PM EDT	Severe Thunderstorm Warning	GRR	Allegan	57 min
Jun 26, 3:31 PM EDT	Severe Thunderstorm Warning	GRR	Mecosta	59 min
Jun 26, 3:39 PM EDT	Tornado Warning	GRR	Clare, Isabella, Mecosta	15 min
Jun 26, 3:49 PM EDT	Beach Hazards Statement	GRR	Allegan, Muskegon, Oceana, Ottawa, Van Buren	24 hr
Jun 26, 4:44 PM EDT	Tornado Warning	GRR	Ionia	31 min
Jun 26, 4:55 PM EDT	Severe Thunderstorm Warning	GRR	Barry, Calhoun, Eaton, Kalamazoo	65 min
Jun 26, 4:58 PM EDT	Tornado Warning Tornado observed	GRR	Calhoun, Eaton	47 min
Jun 26, 5:05 PM EDT	Tornado Warning	GRR	Clinton	28 min
Jun 26, 5:20 PM EDT	Severe Thunderstorm Warning	GRR	Ingham	55 min
Jun 26, 5:29 PM EDT	Tornado Warning	GRR	Calhoun, Kalamazoo	61 min
Jun 26, 5:30 PM EDT	Severe Thunderstorm Warning	GRR	Clinton	17 min
Jun 26, 5:32 PM EDT	Tornado Warning Tornado observed	GRR	Ingham	58 min
Jun 26, 5:43 PM EDT	Tornado Warning	GRR	Eaton	32 min
Jun 26, 5:45 PM EDT	Areal Flood Advisory	GRR	Calhoun, Clinton, Eaton, Ingham, Jackson	2 hr
Jun 26, 6:12 PM EDT	Tornado Warning	GRR	Calhoun, Eaton, Ingham, Jackson	63 min
Jun 26, 6:28 PM EDT	Tornado Warning	GRR	Ingham	32 min
Jun 26, 7:14 PM EDT	Severe Thunderstorm Warning	GRR	Calhoun, Ingham, Jackson	61 min
Jun 26, 7:54 PM EDT	Severe Thunderstorm Warning	GRR	Van Buren	51 min

Nearby

Areal Flood Advisories in Michigan, 2021 Every areal flood 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.