Alert archive / Michigan / Red Flag Warnings in 2021

Red Flag Warning 3, NWS Grand Rapids, MI

June 17, 202123 counties in Michigan

NWS Grand Rapids, MI issued this red flag warning at Jun 17, 2021, 9:12 AM EDT for 23 counties in Michigan. It took effect at Jun 17, 2021, 11:00 AM EDT. It was in force for 9 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 17, 2021, 9:12 AM EDT (13:12 UTC)
In effect from
Jun 17, 2021, 11:00 AM EDT
Expired
Jun 17, 2021, 8:00 PM EDT
In force
9 hr
Issued by
NWS Grand Rapids, MI
All 23 counties

Allegan County, MI, Barry County, MI, Calhoun County, MI, Clare County, MI, Clinton County, MI, Eaton County, MI, Gratiot County, MI, Ingham County, MI, Ionia County, MI, Isabella County, MI, Jackson County, MI, Kalamazoo County, MI, Kent County, MI, Lake County, MI, Mason County, MI, Mecosta County, MI, Montcalm County, MI, Muskegon County, MI, Newaygo County, MI, Oceana County, MI, Osceola County, MI, Ottawa County, MI, Van Buren County, MI

The radar

The Grand Rapids radar (KGRR), 27 km from the middle of the area, began a volume at 13:12 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, 1.2 hours before the alert went out and 165 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 12:00Z on 2021-06-17Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Detroit, MI at 12:00Z on 2021-06-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 106 square meters per square second.19395878Sfc1 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
2069 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
106 m²/s²
0-3 km storm-relative helicity
172 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

174 
WWUS83 KGRR 171312
RFWGRR

URGENT - FIRE WEATHER MESSAGE
National Weather Service Grand Rapids MI
912 AM EDT Thu Jun 17 2021

MIZ037>040-043-044-172115-
/O.UPG.KGRR.FW.A.0003.210617T1500Z-210618T0000Z/
/O.NEW.KGRR.FW.W.0003.210617T1500Z-210618T0000Z/
Mason-Lake-Osceola-Clare-Oceana-Newaygo-
912 AM EDT Thu Jun 17 2021

...RED FLAG WARNING IN EFFECT UNTIL 8 PM EDT THIS EVENING...

The National Weather Service in Grand Rapids has issued a Red
Flag Warning, which is in effect until 8 PM EDT this evening. The
Fire Weather Watch is no longer in effect.

* Winds...Southwest 10 to 15 mph with gusts up to 25 mph.

* Relative Humidity...As low as 20 percent.

* Temperatures...In the mid 80s.

* Impacts...The potential exists for fires to grow out of 
  control quickly this afternoon due to warm, dry and breezy 
  conditions. Burn restrictions are likely in effect. for more 
  information on burn restrictions...visit the Michigan DNR 
  website at www.michigan.gov/burnpermit or call 866-922-2876.

* Impacts...The potential exists for fires to grow out of control
  quickly this afternoon due to warm, dry and breezy conditions.
  Burn restrictions are likely in effect. for more information on
  burn restrictions...visit the Michigan DNR website at 
  www.michigan.gov/burnpermit or call 866-922-2876. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now or will shortly. The combination of
strong winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.

Be careful with any activities that could potentially lead to a
wildfire. Camping...outdoor grills...smoking materials...chain
saws...and all terrain vehicles all have the potential to throw a
spark and ignite a dangerous and destructive fire. 

&&

$$

MIZ045-046-050>052-056>059-064>067-071>074-172115-
/O.NEW.KGRR.FW.W.0003.210617T1500Z-210618T0000Z/
Mecosta-Isabella-Muskegon-Montcalm-Gratiot-Ottawa-Kent-Ionia-
Clinton-Allegan-Barry-Eaton-Ingham-Van Buren-Kalamazoo-Calhoun-
Jackson-
912 AM EDT Thu Jun 17 2021

...RED FLAG WARNING IN EFFECT UNTIL 8 PM EDT THIS EVENING...

The National Weather Service in Grand Rapids has issued a Red
Flag Warning, which is in effect until 8 PM EDT this evening.

* Winds...Southwest 5 to 10 mph with gusts up to 25 mph.

* Relative Humidity...As low as 16 percent.

* Temperatures...In the upper 80s.

* Impacts...The potential exists for fires to grow out of control
  quickly this afternoon due to warm, dry and breezy conditions.
  Burn restrictions are likely in effect. for more information on
  burn restrictions...visit the Michigan DNR website at 
  www.michigan.gov/burnpermit or call 866-922-2876. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now or will shortly. The combination of
strong winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.

Be careful with any activities that could potentially lead to a
wildfire. Camping...outdoor grills...smoking materials...chain
saws...and all terrain vehicles all have the potential to throw a
spark and ignite a dangerous and destructive fire. 

&&

$$
1 follow-up statement
252 
WWUS83 KGRR 171932
RFWGRR

URGENT - FIRE WEATHER MESSAGE
National Weather Service Grand Rapids MI
332 PM EDT Thu Jun 17 2021

MIZ037>040-043>046-050>052-056>059-064>067-071>074-180000-
/O.CON.KGRR.FW.W.0003.000000T0000Z-210618T0000Z/
Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella-Muskegon-
Montcalm-Gratiot-Ottawa-Kent-Ionia-Clinton-Allegan-Barry-Eaton-
Ingham-Van Buren-Kalamazoo-Calhoun-Jackson-
332 PM EDT Thu Jun 17 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

* Winds...Southwest 10 to 15 mph with gusts over 20 mph possible

* Relative Humidity...As low as 17 percent.

* Temperatures...In the upper 80s.

* Impacts...The potential exists for fires to grow out of 
  control quickly this afternoon due to warm, dry and breezy 
  conditions. Burn restrictions are likely in effect. for more 
  information on burn restrictions...visit the Michigan DNR 
  website at www.michigan.gov/burnpermit or call 866-922-2876.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now or will shortly. The combination of
strong winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.

Be careful with any activities that could potentially lead to a
wildfire. Camping...outdoor grills...smoking materials...chain
saws...and all terrain vehicles all have the potential to throw a
spark and ignite a dangerous and destructive fire.

&&

$$

Nearby

Red Flag Warnings in Michigan, 2021Every red flag warning 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.