Alert archive / Michigan / Flash Flood Warnings in 2018
Flash Flood Warning 2, NWS Detroit, MI
NWS Detroit, MI issued this flash flood warning at Aug 18, 2018, 5:21 PM EDT for Tuscola 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 18, 2018, 5:21 PM EDT (21:21 UTC)
- Expired
- Aug 18, 2018, 8:15 PM EDT
- In force
- 3 hr
- Issued by
- NWS Detroit, MI
- Area
- Storm-based polygon
- Flood severity
- None
County Tuscola County, MI
The radar
The Detroit radar (KDTX), 107 km from the middle of the area, began a volume at 21:22 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, 9.4 hours before the alert went out and 104 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
- 81 J/kg
- Mixed-layer CIN
- -57 J/kg
- Mixed-layer LCL
- 1007 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 31 m²/s²
- 0-3 km storm-relative helicity
- 19 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
499 WGUS53 KDTX 182121 FFWDTX MIC157-190015- /O.NEW.KDTX.FF.W.0002.180818T2121Z-180819T0015Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Detroit/Pontiac MI 521 PM EDT SAT AUG 18 2018 The National Weather Service in Detroit/Pontiac has issued a * Flash Flood Warning for... Northeastern Tuscola County in southeastern Michigan... * Until 815 PM EDT. * At 520 PM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Rainfall amounts in excess of three inches have already fallen. Flash flooding is expected to begin shortly. * Some locations that will experience flooding include... Cass City and Gagetown. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Excessive runoff from heavy rainfall will cause flooding of small creeks and streams, country roads, farmland, and other low lying spots. && LAT...LON 4367 8317 4360 8319 4361 8329 4367 8328 $$ Behnke
3 follow-up statements
218 WGUS73 KDTX 182203 FFSDTX Flash Flood Statement National Weather Service Detroit/Pontiac MI 603 PM EDT SAT AUG 18 2018 MIC157-190015- /O.CON.KDTX.FF.W.0002.000000T0000Z-180819T0015Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Tuscola MI- 603 PM EDT SAT AUG 18 2018 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 815 PM EDT FOR NORTHEASTERN TUSCOLA COUNTY... At 602 PM EDT, Doppler radar indicated heavy rain across the warned area. Rainfall amounts in excess of three inches of rain has already fallen. Flash flooding is expected to begin shortly. Some locations that will experience flooding include... Cass City and Gagetown. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Excessive runoff from heavy rainfall will cause flooding of small creeks and streams, country roads, farmland, and other low lying spots. && LAT...LON 4367 8317 4360 8319 4361 8329 4367 8328 $$ Behnke
283 WGUS73 KDTX 182310 FFSDTX Flash Flood Statement National Weather Service Detroit/Pontiac MI 710 PM EDT SAT AUG 18 2018 MIC157-190015- /O.CON.KDTX.FF.W.0002.000000T0000Z-180819T0015Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Tuscola MI- 710 PM EDT SAT AUG 18 2018 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 815 PM EDT FOR NORTHEASTERN TUSCOLA COUNTY... At 709 PM EDT, Doppler radar indicated heavy rain across the warned area. Rainfall amounts in excess of three inches has fallen. Flash flooding is expected to begin shortly. Some locations that will experience flooding include... Cass City and Gagetown. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Excessive runoff from heavy rainfall will cause flooding of small creeks and streams, country roads, farmland, and other low lying spots. && LAT...LON 4367 8317 4360 8319 4361 8329 4367 8328 $$ Behnke
501 WGUS73 KDTX 190012 FFSDTX Flash Flood Statement National Weather Service Detroit/Pontiac MI 812 PM EDT SAT AUG 18 2018 MIC157-190022- /O.EXP.KDTX.FF.W.0002.000000T0000Z-180819T0015Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Tuscola MI- 812 PM EDT SAT AUG 18 2018 ...THE FLASH FLOOD WARNING FOR NORTHEASTERN TUSCOLA COUNTY WILL EXPIRE AT 815 PM EDT... The heavy rain has ended. Flooding is no longer expected to pose a threat. Please continue to heed any remaining road closures. LAT...LON 4367 8317 4360 8319 4361 8329 4367 8328 $$ Behnke
The office that day
Everything else NWS Detroit, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 3:39 AM EDT | Small Craft Advisory | DTX | 12 hr | |
| Aug 18, 3:41 AM EDT | Beach Hazards Statement | DTX | Huron | 12 hr |
| Aug 18, 3:07 PM EDT | Special Weather Statement | DTX | Tuscola | 53 min |
| Aug 18, 4:33 PM EDT | Areal Flood Advisory | DTX | Tuscola | 3 hr |
| Aug 18, 5:32 PM EDT | Areal Flood Advisory | DTX | Genesee | 93 min |
| Aug 18, 7:00 PM EDT | Areal Flood Advisory | DTX | Oakland | 74 min |
| Aug 18, 7:42 PM EDT | Areal Flood Advisory | DTX | Oakland, Wayne | 101 min |
| Aug 18, 7:51 PM EDT | Special Weather Statement | DTX | Wayne | 54 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.