Alert archive / Michigan / Flash Flood Warnings in 2020
Flash Flood Warning 13, NWS Gaylord, MI
NWS Gaylord, MI issued this flash flood warning at Aug 10, 2020, 9:12 PM EDT for 4 counties in Michigan. It was in force for 4 hr. 1 report 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
- Aug 10, 2020, 9:12 PM EDT (01:12 UTC)
- Expired
- Aug 11, 2020, 1:15 AM EDT
- In force
- 4 hr
- Issued by
- NWS Gaylord, MI
- Area
- Storm-based polygon
- Flood severity
- None
Counties Arenac County, MI, Gladwin County, MI, Ogemaw County, MI, Roscommon County, MI
The radar
The NCL Michigan radar (KAPX), 92 km from the middle of the area, began a volume at 01:15 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 |
|---|---|---|---|
| Aug 10, 10:30 PM EDT | FLASH FLOOD | 6 Ne Hockaday, MI | HALF FOOT OF WATER ON M-30 NEAR INDIAN LAKE DR. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Detroit, MI (KDTX), launched 00:00Z, 1.2 hours before the alert went out and 173 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
- 1727 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 1196 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 58 m²/s²
- 0-3 km storm-relative helicity
- 71 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
143
WGUS53 KAPX 110112
FFWAPX
MIC011-051-129-143-110515-
/O.NEW.KAPX.FF.W.0013.200811T0112Z-200811T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Gaylord MI
912 PM EDT Mon Aug 10 2020
The National Weather Service in Gaylord has issued a
* Flash Flood Warning for...
Northwestern Arenac County in northern Michigan...
Northern Gladwin County in northern Michigan...
Southwestern Ogemaw County in northern Michigan...
Southeastern Roscommon County in northern Michigan...
* Until 115 AM EDT.
* At 912 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 3 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...
Gladwin, Bowmanville, Skeels and Skidway Lake.
Additional rainfall amounts of 1 to 2 inches are possible in the
warned area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 4408 8461 4425 8427 4425 8412 4417 8406
4386 8461
FLASH FLOOD...RADAR INDICATED
$$
Cornish1 follow-up statement
159
WGUS73 KAPX 110457
FFSAPX
Flash Flood Statement
National Weather Service Gaylord MI
1257 AM EDT Tue Aug 11 2020
MIC011-051-129-143-110515-
/O.CON.KAPX.FF.W.0013.000000T0000Z-200811T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Arenac MI-Gladwin MI-Ogemaw MI-Roscommon MI-
1257 AM EDT Tue Aug 11 2020
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 115 AM EDT EARLY THIS
MORNING FOR NORTHWESTERN ARENAC, NORTHERN GLADWIN, SOUTHWESTERN
OGEMAW AND SOUTHEASTERN ROSCOMMON COUNTIES...
At 1257 AM EDT, emergency management reported thunderstorms
producing heavy rain across the warned area resulting in 6 inches of
water on M-30 near Indian River Dr. Between 2 and 5 inches of rain
have fallen. Flash flooding is ongoing.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Emergency management.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other
drainage and low lying areas.
Some locations that will experience flash flooding include...
Gladwin, Bowmanville, Skeels and Skidway Lake.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 4408 8461 4425 8427 4425 8412 4417 8406
4386 8461
FLASH FLOOD...OBSERVED
$$
CornishThe office that day
Everything else NWS Gaylord, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 10, 10:44 PM EDT | Special Weather Statement | APX | Kalkaska | 16 min |
| Aug 10, 11:01 PM EDT | Special Weather Statement | APX | Kalkaska | 29 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.