Alert archive / Michigan / Flash Flood Warnings in 2020

Flash Flood Warning 9, NWS Gaylord, MI

July 19, 2020Antrim County, Grand Traverse County, Leelanau County, Michigan

NWS Gaylord, MI issued this flash flood warning at Jul 19, 2020, 6:35 AM EDT for Antrim County, Grand Traverse County, Leelanau County, Michigan. It was in force for 3 hr. 4 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 19, 2020, 6:35 AM EDT (10:35 UTC)
Expired
Jul 19, 2020, 9:45 AM 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, Leelanau County, MI

The radar

The NCL Michigan radar (KAPX), 69 km from the middle of the area, began a volume at 10:35 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

TimeReportWhereRemark
Jul 19, 7:00 AM EDTHEAVY RAIN 1.984 Wsw Bates, MICOCORAHS STATION MI-GT-1 TRAVERSE CITY 4.1 E.
Jul 19, 7:20 AM EDTHEAVY RAIN 1.752 Wnw Traverse City, MICO-OP OBSERVER STATION TCMM4 TRAVERSE CITY MUNSON.
Jul 19, 8:00 AM EDTHEAVY RAIN 3.224 Sw Greilickville, MICOCORAHS STATION MI-GT-27 TRAVERSE CITY 4.7 W.
Jul 19, 8:53 AM EDTHEAVY RAIN 2.612 Se Traverse City, MIASOS STATION KTVC TRAVERSE CITY - CHERRY CAPITAL AIRPORT.

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 00:00Z, 10.6 hours before the alert went out and 202 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, Green Bay/Straub, WI at 00:00Z on 2020-07-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 293 joules per kilogram.LCLLFCEL10008507005003002001001 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, Green Bay/Straub, WI at 00:00Z on 2020-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 122 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
293 J/kg
Mixed-layer CIN
-321 J/kg
Mixed-layer LCL
1478 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
122 m²/s²
0-3 km storm-relative helicity
312 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

085 
WGUS53 KAPX 191035
FFWAPX
MIC009-055-089-191345-
/O.NEW.KAPX.FF.W.0009.200719T1035Z-200719T1345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Gaylord MI
635 AM EDT Sun Jul 19 2020

The National Weather Service in Gaylord has issued a

* Flash Flood Warning for...
  Southwestern Antrim County in northern Michigan...
  Central Grand Traverse County in northern Michigan...
  South Central Leelanau County in northern Michigan...

* Until 945 AM EDT.

* At 635 AM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 2 inches of rain 
  have fallen. Flash flooding is ongoing or expected to begin 
  shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Doppler radar.

  IMPACT...Flooding of small creeks and streams, urban areas,
           highways, streets and underpasses as well as other
           drainage and low lying areas.

* Some locations that will experience flash flooding include...
  Traverse City, Elk Rapids, Traverse City State Park, 
  Greilickville, Williamsburg, Fouch and Bates.

Additional rainfall amounts up to 1 inch are possible in the warned 
area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4478 8586 4482 8589 4483 8565 4495 8531
      4485 8532 4485 8533 4482 8532 4481 8533
      4474 8533 4470 8580 4473 8582 4477 8582

FLASH FLOOD...RADAR INDICATED

$$

kfarina
2 follow-up statements
756 
WGUS73 KAPX 191220
FFSAPX

Flash Flood Statement
National Weather Service Gaylord MI
820 AM EDT Sun Jul 19 2020

MIC009-055-089-191345-
/O.CON.KAPX.FF.W.0009.000000T0000Z-200719T1345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Antrim MI-Grand Traverse MI-Leelanau MI-
820 AM EDT Sun Jul 19 2020

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 945 AM EDT THIS 
MORNING FOR SOUTHWESTERN ANTRIM, CENTRAL GRAND TRAVERSE AND SOUTH 
CENTRAL LEELANAU COUNTIES...

At 820 AM EDT, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area. Between 1 and 2 inches of rain have 
fallen. Flash flooding is possible in Traverse City and the 
surrounding areas, even though rain is tapering off.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Doppler radar.

IMPACT...Flooding of small creeks and streams, urban areas,
         highways, streets and underpasses as well as other
         drainage and low lying areas.

Some locations that will experience flash flooding include...
  Traverse City, Elk Rapids, Traverse City State Park, 
  Greilickville, Williamsburg, Fouch and Bates.

Additional rainfall amounts up to 1 inch are possible in the warned 
area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4478 8586 4482 8589 4483 8565 4495 8531
      4485 8532 4485 8533 4482 8532 4481 8533
      4474 8533 4470 8580 4473 8582 4477 8582

FLASH FLOOD...RADAR INDICATED

$$

JZ
119 
WGUS73 KAPX 191340
FFSAPX

Flash Flood Statement
National Weather Service Gaylord MI
940 AM EDT Sun Jul 19 2020

MIC009-055-089-191350-
/O.EXP.KAPX.FF.W.0009.000000T0000Z-200719T1345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Antrim MI-Grand Traverse MI-Leelanau MI-
940 AM EDT Sun Jul 19 2020

...FLASH FLOOD WARNING WILL EXPIRE AT 945 AM EDT THIS MORNING FOR 
SOUTHWESTERN ANTRIM, CENTRAL GRAND TRAVERSE AND SOUTH CENTRAL 
LEELANAU COUNTIES...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat. Please continue to heed any remaining road closures.

LAT...LON 4478 8586 4482 8589 4483 8565 4495 8531
      4485 8532 4485 8533 4482 8532 4481 8533
      4474 8533 4470 8580 4473 8582 4477 8582

$$

JZ

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 19, 3:41 AM EDTSmall Craft AdvisoryAPX40 hr
Jul 19, 3:43 AM EDTBeach Hazards StatementAPXBenzie, Charlevoix, Emmet, Leelanau, Manistee16 hr
Jul 19, 3:45 AM EDTSpecial Weather StatementAPXChippewa, Mackinac2 hr
Jul 19, 3:57 AM EDTSpecial Marine WarningAPX48 min
Jul 19, 3:59 AM EDTSevere Thunderstorm WarningAPXChippewa61 min
Jul 19, 4:04 AM EDTSpecial Marine WarningAPX116 min
Jul 19, 4:33 AM EDTSevere Thunderstorm WarningAPXCharlevoix27 min
Jul 19, 4:52 AM EDTSpecial Marine WarningAPX38 min
Jul 19, 4:52 AM EDTSpecial Weather StatementAPXAntrim, Emmet, Grand Traverse, Leelanau53 min
Jul 19, 5:03 AM EDTSpecial Marine WarningAPX57 min
Jul 19, 5:26 AM EDTSevere Thunderstorm WarningAPXAntrim, Charlevoix, Cheboygan, Emmet, Otsego64 min
Jul 19, 5:37 AM EDTSevere Thunderstorm WarningAPXCheboygan, Presque Isle68 min
Jul 19, 5:44 AM EDTSpecial Marine WarningAPX61 min
Jul 19, 5:56 AM EDTSpecial Marine WarningAPX34 min
Jul 19, 6:01 AM EDTSpecial Weather StatementAPXMontmorency, Otsego44 min
Jul 19, 6:07 AM EDTSevere Thunderstorm WarningAPXGrand Traverse, Kalkaska, Leelanau, Missaukee, Wexford53 min
Jul 19, 6:14 AM EDTSevere Thunderstorm WarningAPXAlpena, Crawford, Montmorency, Oscoda, Otsego61 min
Jul 19, 6:31 AM EDTSpecial Marine WarningAPX59 min
Jul 19, 6:52 AM EDTSpecial Weather StatementAPXAlcona, Alpena, Iosco, Ogemaw, Oscoda, Presque Isle and 1 more53 min
Jul 19, 6:59 AM EDTTornado WarningAPXAlcona, Crawford, Iosco, Ogemaw, Oscoda43 min
Jul 19, 7:18 AM EDTSpecial Marine WarningAPX87 min
Jul 19, 7:33 AM EDTSevere Thunderstorm WarningAPXArenac, Iosco, Ogemaw42 min
Jul 19, 8:28 AM EDTSevere Thunderstorm WarningAPXArenac, Gladwin36 min
Jul 19, 8:38 AM EDTSpecial Marine WarningAPX37 min

Nearby

Flash Flood Warnings in Michigan, 2020Every flash flood warning in 2020

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.