Alert archive / Michigan / Flash Flood Watches in 2018
Flash Flood Watch 2, NWS Marquette, MI
NWS Marquette, MI issued this flash flood watch at Sep 4, 2018, 9:24 AM EDT for 10 counties in Michigan. It took effect at Sep 4, 2018, 8:00 PM EDT. It was in force for 15 hr.
The area
The counties it named.
The facts
- Issued
- Sep 4, 2018, 9:24 AM EDT (13:24 UTC)
- In effect from
- Sep 4, 2018, 8:00 PM EDT
- Expired
- Sep 5, 2018, 11:01 AM EDT
- In force
- 15 hr
- Issued by
- NWS Marquette, MI
- Flood severity
- None
Counties Alger County, MI, Baraga County, MI, Delta County, MI, Dickinson County, MI, Gogebic County, MI, Houghton County, MI, Iron County, MI, Marquette County, MI, Menominee County, MI, Ontonagon County, MI
The radar
The Marquette radar (KMQT), 46 km from the middle of the area, began a volume at 13:28 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, 1.4 hours before the alert went out and 460 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
- 106 J/kg
- Mixed-layer CIN
- -31 J/kg
- Mixed-layer LCL
- 667 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 45 m²/s²
- 0-3 km storm-relative helicity
- 71 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
What forecasters said that day
The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Marquette, MI wrote its last area forecast discussion before this flash flood watch went out at Sep 4, 7:41 AM EDT, 1 hour 43 minutes earlier.
Area forecast discussion, Sep 4, 7:41 AM EDT, 1 hour 43 minutes before
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</html>Hazardous weather outlook, Sep 4, 5:16 AM EDT, 4 hours 8 minutes before
Hazardous Weather Outlook National Weather Service Marquette MI 516 AM EDT Tue Sep 4 2018 MIZ001>007-009>014-084-085-050930- Keweenaw-Ontonagon-Northern Houghton-Baraga-Marquette-Alger-Luce- Gogebic-Iron-Dickinson-Menominee-Delta-Southern Schoolcraft- Southern Houghton-Northern Schoolcraft- 516 AM EDT Tue Sep 4 2018 /416 AM CDT Tue Sep 4 2018/ This Hazardous Weather Outlook is for portions of western Upper Michigan and central Upper Michigan. .DAY ONE...Today and Tonight Periods of showers and thunderstorms, before noon then again this evening through the overnight. Locally heavy rainfall will be possible. A moderate swim risk is expected to develop later today along the Lake Michigan beaches of southern Schoolcraft County. The heaviest rainfall could lead to ponding of water and runoff problems in poor drainage and low-lying areas. .DAYS TWO THROUGH SEVEN...Wednesday through Monday Showers and isolated thunderstorms with locally heavy rainfall is likely into Wednesday. The heavy rainfall may lead to ponding of water and runoff problems in poor drainage and low-lying areas. In addition to heavy rainfall, isolated thunderstorms early Wednesday will also be capable of producing gusty winds. A high swim risk may also develop along the Lake Superior beaches of Marquette and Alger county on Wednesday. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to submit reports to the National Weather Service in Marquette. The public may also submit reports at our webpage, Facebook page, or on Twitter. LSZ162-240>251-263>267-050930- Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM-Saxon Harbor WI to Black River MI- Black River to Ontonagon MI- Ontonagon to Upper Entrance of Portage Canal MI- Upper Entrance of Portage Canal to Eagle River MI- Eagle River to Manitou Island MI- Manitou Island to Point Isabelle MI- Point Isabelle to Lower Entrance of Portage Canal MI- Lower Entrance of Portage Canal To Huron Islands MI Including Keweenaw and Huron Bays-Huron Islands to Marquette MI- Marquette to Munising MI-Munising to Grand Marais MI- Grand Marais to Whitefish Point MI- Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park- Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border- Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore- Lake Superior East of a line from Manitou Island to Marquette MI and West of a line from Grand Marais MI to the US/Canadian Border Beyond 5NM from shore- Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border- 516 AM EDT Tue Sep 4 2018 /416 AM CDT Tue Sep 4 2018/ This Hazardous Weather Outlook is for portions of Eastern Lake Superior...Central Lake Superior and Western Lake Superior. .DAY ONE...Today and Tonight Periods of showers and thunderstorms, before noon then again this evening through the overnight. Locally heavy rainfall will be possible. .DAYS TWO THROUGH SEVEN...Wednesday through Monday Showers and isolated thunderstorms with locally heavy rainfall is likely into Wednesday. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to submit reports to the National Weather Service in Marquette. The public may also submit reports at our webpage, Facebook page, or on Twitter. LMZ221-248-250-050930- Green Bay North of line from Cedar River MI to Rock Island Passage-Seul Choix Point to Point Detour MI- 5NM East of a line from Fairport MI to Rock Island Passage- 516 AM EDT Tue Sep 4 2018 This Hazardous Weather Outlook is for portions of Northern Lake Michigan. .DAY ONE...Today and Tonight Periods of showers and thunderstorms, before noon then again this evening through the overnight. Locally heavy rainfall will be possible. .DAYS TWO THROUGH SEVEN...Wednesday through Monday Showers and isolated thunderstorms with locally heavy rainfall is likely into Wednesday. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to submit reports to the National Weather Service in Marquette. The public may also submit reports at our webpage, Facebook page, or on Twitter. Beachler
The office that day
Everything else NWS Marquette, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 4, 4:15 PM EDT | Small Craft Advisory | MQT | 37 hr |
Nearby
Flash Flood Watches in Michigan, 2018Every flash 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.