Alert archive / Michigan / Flood Watches in 2018

Flood Watch 1, NWS Gaylord, MI

February 19, 20184 counties in Michigan

NWS Gaylord, MI issued this flood watch at Feb 19, 2018, 4:16 AM EST for 4 counties in Michigan. It took effect at Feb 19, 2018, 1:00 PM EST. It was in force for 21 hr.

The area

The counties it named.

The facts

Issued
Feb 19, 2018, 4:16 AM EST (09:16 UTC)
In effect from
Feb 19, 2018, 1:00 PM EST
Expired
Feb 20, 2018, 9:38 AM EST
In force
21 hr
Issued by
NWS Gaylord, MI
Flood severity
None

Counties Arenac County, MI, Gladwin County, MI, Iosco County, MI, Ogemaw County, MI

The radar

The NCL Michigan radar (KAPX), 103 km from the middle of the area, began a volume at 09:14 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 00:00Z, 9.3 hours before the alert went out and 166 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, Detroit, MI at 00:00Z on 2018-02-19Temperature 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, Detroit, MI at 00:00Z on 2018-02-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 255 square meters per square second.1939587897117136Sfc1 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
1809 m above ground
0-6 km bulk shear
67 kt
0-1 km storm-relative helicity
255 m²/s²
0-3 km storm-relative helicity
488 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

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

NWS Gaylord, MI wrote its last area forecast discussion before this flood watch went out at Feb 19, 3:53 AM EST, 23 minutes earlier.

Area forecast discussion, Feb 19, 3:53 AM EST, 23 minutes before
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Hazardous weather outlook, Feb 19, 4:06 AM EST, 10 minutes before
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Nearby

Flood Watches in Michigan, 2018Every flood watch in 2018

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.