Alert archive / Michigan / Flash Flood Warnings in 2018
Flash Flood Warning 4, NWS Gaylord, MI
NWS Gaylord, MI issued this flash flood warning at Aug 15, 2018, 6:27 PM EDT for Oscoda County, Michigan. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 15, 2018, 6:27 PM EDT (22:27 UTC)
- Expired
- Aug 15, 2018, 9:30 PM EDT
- In force
- 3 hr
- Issued by
- NWS Gaylord, MI
- Area
- Storm-based polygon
- Flood severity
- None
County Oscoda County, MI
The radar
The NCL Michigan radar (KAPX), 40 km from the middle of the area, began a volume at 22:31 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
Alpena, MI (KAPX), launched 12:00Z, 10.5 hours before the alert went out and 154 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
- 1067 J/kg
- Mixed-layer CIN
- -46 J/kg
- Mixed-layer LCL
- 835 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 62 m²/s²
- 0-3 km storm-relative helicity
- 25 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted.
283 WGUS53 KAPX 152227 FFWAPX MIC135-160130- /O.NEW.KAPX.FF.W.0004.180815T2227Z-180816T0130Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Gaylord MI 627 PM EDT WED AUG 15 2018 The National Weather Service in Gaylord has issued a * Flash Flood Warning for... Oscoda County in northern Michigan... * Until 930 PM EDT. * At 626 PM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Up to three inches of rain have already fallen, centered on and just north of Red Oak. Flash flooding is expected to begin shortly. * Some locations that will experience flooding include... Red Oak. Additional rainfall amounts of around an 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 4469 8437 4481 8437 4475 8416 4465 8416 $$ JZ
4 follow-up statements
112 WGUS73 KAPX 152253 FFSAPX Flash Flood Statement National Weather Service Gaylord MI 653 PM EDT WED AUG 15 2018 MIC135-160130- /O.CON.KAPX.FF.W.0004.000000T0000Z-180816T0130Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Oscoda MI- 653 PM EDT WED AUG 15 2018 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 930 PM EDT FOR OSCODA COUNTY... At 647 PM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Radar estimates that 2 to 4 inches of rain has fallen on parts of Greenwood and Elmer Townships, with the heaviest amounts centered about 2 miles north of Red Oak. Flash flooding has likely already begun, or will begin shortly. In particular, Wright Creek, the East Branch of Big Creek, and tributaries of those waterways in northwest Oscoda County are expected to quickly rise out of their banks and flood. Some locations that will experience flooding include... Red Oak. Additional rainfall amounts of up to an inch are expected in the warned area. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && LAT...LON 4469 8437 4481 8437 4475 8416 4465 8416 $$ JZ
167 WGUS73 KAPX 152355 FFSAPX Flash Flood Statement National Weather Service Gaylord MI 755 PM EDT WED AUG 15 2018 MIC135-160130- /O.CON.KAPX.FF.W.0004.000000T0000Z-180816T0130Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Oscoda MI- 755 PM EDT WED AUG 15 2018 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 930 PM EDT FOR OSCODA COUNTY... At 752 PM EDT, Doppler radar indicated that significant rainfall had ended in the flash flood area. However, radar estimated that 2 to 4 inches of rain fell earlier this afternoon and evening in parts of Greenwood and Elmer Townships. The heaviest amounts were centered about 2 miles north of Red Oak. In particular, Wright Creek, the East Branch of Big Creek, and tributaries of those waterways in northwest Oscoda County are expected to flood this evening. Some locations that will experience flooding include... Red Oak. Little additional rainfall is expected. PRECAUTIONARY/PREPAREDNESS ACTIONS... Excessive runoff from heavy rainfall will cause flooding of small creeks and streams, country roads, farmland, and other low lying spots. && LAT...LON 4469 8437 4481 8437 4475 8416 4465 8416 $$ JZ
118 WGUS73 KAPX 160050 FFSAPX Flash Flood Statement National Weather Service Gaylord MI 850 PM EDT WED AUG 15 2018 MIC135-160130- /O.CON.KAPX.FF.W.0004.000000T0000Z-180816T0130Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Oscoda MI- 850 PM EDT WED AUG 15 2018 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 930 PM EDT FOR OSCODA COUNTY... At 849 PM EDT, Doppler radar indicated that rainfall had ended in the flash flood area. However, radar estimated that 2 to 4 inches of rain fell earlier this afternoon and evening in parts of Greenwood and Elmer Townships. The heaviest amounts were centered about 2 miles north of Red Oak. In particular, Wright Creek, the East Branch of Big Creek, and tributaries of those waterways in northwest Oscoda County are expected to flood this evening. Some locations that will experience flooding include... Red Oak. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be especially cautious at night when it is harder to recognize the dangers of flooding. && LAT...LON 4469 8437 4481 8437 4475 8416 4465 8416 $$ JZ
527 WGUS73 KAPX 160136 FFSAPX Flash Flood Statement National Weather Service Gaylord MI 936 PM EDT WED AUG 15 2018 MIC135-160145- /O.EXP.KAPX.FF.W.0004.000000T0000Z-180816T0130Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Oscoda MI- 936 PM EDT WED AUG 15 2018 ...THE FLASH FLOOD WARNING FOR OSCODA COUNTY HAS EXPIRED... Rainfall has ended, and no reports of flooding have been recieved. Flooding is no longer expected to pose a threat. Please use extra caution when driving in northwest Oscoda County tonight. LAT...LON 4469 8437 4481 8437 4475 8416 4465 8416 $$ JZ
The office that day
Everything else NWS Gaylord, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 15, 2:58 PM EDT | Special Weather Statement | APX | Oscoda | 32 min |
| Aug 15, 3:32 PM EDT | Special Weather Statement | APX | Alcona, Alpena, Iosco, Montmorency, Oscoda | 58 min |
| Aug 15, 4:48 PM EDT | Special Weather Statement | APX | Oscoda | 27 min |
| Aug 15, 5:13 PM EDT | Severe Thunderstorm Warning | APX | Oscoda | 21 min |
| Aug 15, 6:07 PM EDT | Special Weather Statement | APX | Oscoda | 23 min |
Nearby
Flash Flood Warnings in Michigan, 2018Every flash flood warning 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.