Alert archive / Michigan / Flash Flood Warnings in 2021

Flash Flood Warning 3, NWS Gaylord, MI

July 24, 2021Antrim County, Grand Traverse County, Kalkaska County, Michigan

NWS Gaylord, MI issued this flash flood warning at Jul 24, 2021, 9:33 AM EDT for Antrim County, Grand Traverse County, Kalkaska County, Michigan. It was in force for 3 hr. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 24, 2021, 9:33 AM EDT (13:33 UTC)
Expired: Jul 24, 2021, 12:30 PM EDT
In force: 3 hr
Issued by: NWS Gaylord, MI
Area: Storm-based polygon
Flood severity: None

Counties Antrim County, MI, Grand Traverse County, MI, Kalkaska County, MI

The radar

The NCL Michigan radar (KAPX), 49 km from the middle of the area, began a volume at 13:36 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.

What was reported inside it

Time	Report	Where	Remark
Jul 24, 10:20 AM EDT	HEAVY RAIN 1.91	Mancelona, MI	24 HOUR TOTAL. MESONET STATION DW3512.
Jul 24, 10:20 AM EDT	HEAVY RAIN 1.91	Mancelona, MI	24 HOUR TOTAL. MESONET STATION DW3512 FRANK FROM MANCELONA.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 1.6 hours before the alert went out and 222 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: 604 J/kg
Mixed-layer CIN: -72 J/kg
Mixed-layer LCL: 1043 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 208 m²/s²
0-3 km storm-relative helicity: 179 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.7

Open this sounding in Storm Lab

The text

As transmitted.

120 
WGUS53 KAPX 241333
FFWAPX
MIC009-055-079-241630-
/O.NEW.KAPX.FF.W.0003.210724T1333Z-210724T1630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Gaylord MI
933 AM EDT Sat Jul 24 2021

The National Weather Service in Gaylord has issued a

* Flash Flood Warning for...
  Antrim County in northern Michigan...
  East Central Grand Traverse County in northern Michigan...
  Kalkaska County in northern Michigan...

* Until 1230 PM EDT.

* At 933 AM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 3 inches of rain 
  have fallen. Additional rainfall amounts of 0.5 to 2 inches are 
  possible in the warned area. Flash flooding is ongoing or expected 
  to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Kalkaska, Elk Rapids, Mancelona, Bellaire, Antrim, Torch Lake, 
  Central Lake, Rapid City, Darragh, Alden, Clam River, Barker 
  Creek, Sigma, Kewadin, South Boardman, Williamsburg, Jordan 
  Township, Alba, Warner Township and Spider Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Be aware of your surroundings and do not drive on flooded roads.

Flooding is occurring or is imminent. It is important to know where 
you are relative to streams, rivers, or creeks which can become 
killers in heavy rains. Campers and hikers should avoid streams or 
creeks.

&&

LAT...LON 4477 8554 4494 8541 4508 8539 4511 8486
      4466 8485 4460 8533 4465 8558 4473 8548

FLASH FLOOD...RADAR INDICATED

$$

Cornish

2 follow-up statements

504 
WGUS73 KAPX 241454
FFSAPX

Flash Flood Statement
National Weather Service Gaylord MI
1054 AM EDT Sat Jul 24 2021

MIC009-055-079-241630-
/O.CON.KAPX.FF.W.0003.000000T0000Z-210724T1630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Antrim MI-Grand Traverse MI-Kalkaska MI-
1054 AM EDT Sat Jul 24 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1230 PM EDT THIS 
AFTERNOON FOR ANTRIM, EAST CENTRAL GRAND TRAVERSE AND KALKASKA 
COUNTIES...

At 1054 AM EDT, Doppler radar indicated thunderstorms producing 
heavy rain across the warned area. Between 2 and 4 inches of rain 
have fallen. Additional rainfall amounts of 0.5 to 1 inch are 
possible in the warned area. Flash flooding is ongoing or expected 
to begin shortly.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar.

IMPACT...Flash flooding of small creeks and streams, urban areas,
         highways, streets and underpasses as well as other poor
         drainage and low-lying areas.

Some locations that will experience flash flooding include...
  Kalkaska, Elk Rapids, Mancelona, Bellaire, Antrim, Torch Lake, 
  Central Lake, Rapid City, Darragh, Alden, Clam River, Barker 
  Creek, Sigma, Kewadin, South Boardman, Williamsburg, Jordan 
  Township, Alba, Warner Township and Spider Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Be aware of your surroundings and do not drive on flooded roads.

Flooding is occurring or is imminent. It is important to know where 
you are relative to streams, rivers, or creeks which can become 
killers in heavy rains. Campers and hikers should avoid streams or 
creeks.

&&

LAT...LON 4477 8554 4494 8541 4508 8539 4511 8486
      4466 8485 4460 8533 4465 8558 4473 8548

FLASH FLOOD...RADAR INDICATED

$$

Cornish

054 
WGUS73 KAPX 241542
FFSAPX

Flash Flood Statement
National Weather Service Gaylord MI
1142 AM EDT Sat Jul 24 2021

MIC009-055-079-241630-
/O.CON.KAPX.FF.W.0003.000000T0000Z-210724T1630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Antrim MI-Grand Traverse MI-Kalkaska MI-
1142 AM EDT Sat Jul 24 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1230 PM EDT THIS 
AFTERNOON FOR ANTRIM, EAST CENTRAL GRAND TRAVERSE AND KALKASKA 
COUNTIES...

At 1142 AM EDT, Doppler radar indicated thunderstorms producing 
heavy rain across the warned area. Between 2 and 5 inches of rain 
have fallen. Additional rainfall amounts up to 1 inch are possible 
in the warned area. Flash flooding is ongoing or expected to begin 
shortly.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar.

IMPACT...Flash flooding of small creeks and streams, urban areas,
         highways, streets and underpasses as well as other poor
         drainage and low-lying areas.

Some locations that will experience flash flooding include...
  Kalkaska, Elk Rapids, Mancelona, Bellaire, Antrim, Torch Lake, 
  Central Lake, Rapid City, Darragh, Alden, Clam River, Barker 
  Creek, Sigma, Kewadin, South Boardman, Williamsburg, Jordan 
  Township, Alba, Warner Township and Spider Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Be aware of your surroundings and do not drive on flooded roads.

Flooding is occurring or is imminent. It is important to know where 
you are relative to streams, rivers, or creeks which can become 
killers in heavy rains. Campers and hikers should avoid streams or 
creeks.

&&

LAT...LON 4477 8554 4494 8541 4508 8539 4511 8486
      4466 8485 4460 8533 4465 8558 4473 8548

FLASH FLOOD...RADAR INDICATED

$$

Cornish

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 24, 3:08 AM EDT	Small Craft Advisory	APX		16 hr
Jul 24, 8:17 AM EDT	Special Weather Statement	APX	Leelanau	58 min
Jul 24, 8:59 AM EDT	Flash Flood Warning	APX	Leelanau	3 hr
Jul 24, 9:17 AM EDT	Flash Flood Warning	APX	Grand Traverse, Leelanau	3 hr
Jul 24, 9:28 AM EDT	Special Weather Statement	APX	Kalkaska	32 min
Jul 24, 12:52 PM EDT	Special Weather Statement	APX	Missaukee, Roscommon	38 min
Jul 24, 1:11 PM EDT	Special Weather Statement	APX	Roscommon	34 min
Jul 24, 1:33 PM EDT	Special Weather Statement	APX	Gladwin, Ogemaw, Roscommon	27 min
Jul 24, 1:53 PM EDT	Special Weather Statement	APX	Ogemaw	37 min
Jul 24, 2:09 PM EDT	Special Marine Warning	APX		66 min
Jul 24, 2:29 PM EDT	Special Weather Statement	APX	Arenac	46 min
Jul 24, 3:16 PM EDT	Severe Thunderstorm Warning	APX	Arenac	29 min
Jul 24, 3:21 PM EDT	Severe Thunderstorm Warning	APX	Gladwin	54 min

Nearby

Flash Flood Warnings in Michigan, 2021 Every flash flood 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.