Alert archive / Michigan / Flash Flood Warnings in 2012
Flash Flood Warning 2, NWS Detroit, MI
NWS Detroit, MI issued this flash flood warning at Mar 15, 2012, 7:19 PM EDT for Genesee County, Lapeer County, Tuscola County, Michigan. It was in force for 5 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
- Mar 15, 2012, 7:19 PM EDT (23:19 UTC)
- Expired
- Mar 16, 2012, 12:47 AM EDT
- In force
- 5 hr
- Issued by
- NWS Detroit, MI
- Area
- Storm-based polygon
- Flood severity
- None
Counties Genesee County, MI, Lapeer County, MI, Tuscola County, MI
The radar
The Detroit radar (KDTX), 55 km from the middle of the area, began a volume at 23:22 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, 11.3 hours before the alert went out and 52 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
- 2007 J/kg
- Mixed-layer CIN
- -65 J/kg
- Mixed-layer LCL
- 802 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 78 m²/s²
- 0-3 km storm-relative helicity
- 66 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
992
WGUS53 KDTX 152319
FFWDTX
MIC049-087-157-160530-
/O.NEW.KDTX.FF.W.0002.120315T2319Z-120316T0530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
719 PM EDT THU MAR 15 2012
THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTHEASTERN GENESEE COUNTY IN SOUTHEAST MICHIGAN...
NORTHWESTERN LAPEER COUNTY IN SOUTHEAST MICHIGAN...
SOUTHERN TUSCOLA COUNTY IN SOUTHEAST MICHIGAN...
* UNTIL 130 AM EDT FRIDAY
* AT 718 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE
WARNED AREA. ESTIMATES IN EXCESS OF 4 INCHES HAVE FALLEN...WITH
ADDITIONAL RAINFALL STILL POSSIBLE.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
COLUMBIAVILLE...MAYVILLE...MILLINGTON...NORTH BRANCH...VASSAR...
CLIFFORD...LUM...MOUNT MORRIS...OTISVILLE AND OTTER LAKE.
RAINFALL ESTIMATES OF 4 INCHES HAVE FALLEN...WITH ADDITIONAL
RAINFALL POSSIBLE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.
&&
LAT...LON 4304 8312 4306 8371 4322 8372 4322 8369
4337 8370 4338 8312
$$
DRK2 follow-up statements
482
WGUS73 KDTX 160142
FFSDTX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
942 PM EDT THU MAR 15 2012
MIC049-087-157-160530-
/O.CON.KDTX.FF.W.0002.000000T0000Z-120316T0530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GENESEE MI-LAPEER MI-TUSCOLA MI-
942 PM EDT THU MAR 15 2012
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR SOUTHERN
TUSCOLA...NORTHWESTERN LAPEER...AND NORTHEASTERN GENESEE COUNTIES
UNTIL 130 AM EDT...
AT 942 PM EDT...SCATTERED THUNDERSTORMS CONTINUED OVER THE REGION
BUT COVERAGE AND INTENSITY WERE DIMINISHING. THIS WILL ALLOW RUNOFF
TO PROGRESS AND FLOODING TO GRADUALLY SUBSIDE DURING THE REST OF THE
EVENING.
DOPPLER RADAR INDICATED THE AXIS OF HEAVIEST RAINFALL FROM EARLIER
STORMS EXTENDED FROM TUSCOLA TO MILLINGTON TO COLUMBIAVILLE TO KINGS
MILL. FLASH FLOODING IMPACTS ARE ALSO POSSIBLE IN AND NEAR
MAYVILLE...NORTH BRANCH...VASSAR...CLIFFORD...LUM...MOUNT
MORRIS...OTISVILLE AND OTTER LAKE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM THE STORMS WILL CONTINUE TO CAUSE MINOR
FLOODING OF SMALL CREEKS AND STREAMS...HIGHWAYS...STREETS AND OTHER
DRAINAGE AREAS AND LOW LYING SPOTS.
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLOODING IS OBSERVED...ACT QUICKLY. DO NOT
ENTER THE WATER. DO NOT DRIVE INTO WATER OF UNKNOWN DEPTH.
&&
LAT...LON 4304 8312 4306 8371 4322 8372 4322 8369
4337 8370 4338 8312
$$
BT507
WGUS73 KDTX 160447
FFSDTX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
1247 AM EDT FRI MAR 16 2012
MIC049-087-157-160458-
/O.CAN.KDTX.FF.W.0002.000000T0000Z-120316T0530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GENESEE MI-LAPEER MI-TUSCOLA MI-
1247 AM EDT FRI MAR 16 2012
...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR SOUTHERN TUSCOLA...
NORTHWESTERN LAPEER AND NORTHEASTERN GENESEE COUNTIES IS CANCELLED...
AS OF 1245 AM...RAIN HAD ENDED OVER THE AREA. THE DRY CONDITIONS
OVER THE LAST FEW HOURS HAS ALLOWED FLASH FLOOD PRODUCING RUNOFF TO
EASE. HOWEVER...MOTORISTS SHOULD BE ALERT FOR STANDING WATER ON AND
NEAR AREA ROADS DURING THE REST OF THE NIGHT.
LAT...LON 4304 8312 4306 8371 4322 8372 4322 8369
4337 8370 4338 8312
$$
BTThe office that day
Everything else NWS Detroit, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 15, 10:35 AM EDT | Special Marine Warning | DTX | 55 min | |
| Mar 15, 10:55 AM EDT | Severe Thunderstorm Warning | DTX | Macomb, Wayne | 30 min |
| Mar 15, 12:56 PM EDT | Special Marine Warning | DTX | 94 min | |
| Mar 15, 1:56 PM EDT | Special Marine Warning | DTX | 64 min | |
| Mar 15, 3:03 PM EDT | Severe Thunderstorm Warning | DTX | Huron | 72 min |
| Mar 15, 3:06 PM EDT | Special Marine Warning | DTX | 105 min | |
| Mar 15, 3:24 PM EDT | Special Marine Warning | DTX | 2 hr | |
| Mar 15, 3:28 PM EDT | Special Marine Warning | DTX | 92 min | |
| Mar 15, 3:31 PM EDT | Severe Thunderstorm Warning | DTX | Bay | 59 min |
| Mar 15, 4:01 PM EDT | Severe Thunderstorm Warning | DTX | Huron | 48 min |
| Mar 15, 4:09 PM EDT | Severe Thunderstorm Warning | DTX | Livingston | 81 min |
| Mar 15, 4:26 PM EDT | Severe Thunderstorm Warning | DTX | Genesee, Saginaw | 30 min |
| Mar 15, 4:28 PM EDT | Severe Thunderstorm Warning | DTX | Bay | 77 min |
| Mar 15, 4:36 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee | 84 min |
| Mar 15, 4:40 PM EDT | Severe Thunderstorm Warning | DTX | Genesee, Tuscola | 95 min |
| Mar 15, 4:42 PM EDT | Severe Thunderstorm Warning | DTX | Shiawassee | 55 min |
| Mar 15, 4:53 PM EDT | Special Marine Warning | DTX | 97 min | |
| Mar 15, 4:57 PM EDT | Severe Thunderstorm Warning | DTX | Washtenaw | 93 min |
| Mar 15, 5:07 PM EDT | Tornado Warning | DTX | Livingston, Washtenaw | 53 min |
| Mar 15, 5:28 PM EDT | Special Marine Warning | DTX | 92 min | |
| Mar 15, 5:28 PM EDT | Tornado Warning | DTX | Washtenaw | 62 min |
| Mar 15, 5:33 PM EDT | Severe Thunderstorm Warning | DTX | Monroe | 87 min |
| Mar 15, 5:37 PM EDT | Severe Thunderstorm Warning | DTX | Lapeer, Tuscola | 83 min |
| Mar 15, 5:45 PM EDT | Tornado Warning | DTX | Monroe | 16 min |
| Mar 15, 6:16 PM EDT | Severe Thunderstorm Warning | DTX | Genesee, Tuscola | 29 min |
| Mar 15, 6:22 PM EDT | Special Marine Warning | DTX | 113 min | |
| Mar 15, 6:28 PM EDT | Tornado Warning | DTX | Washtenaw | 47 min |
| Mar 15, 6:33 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee | 42 min |
| Mar 15, 6:34 PM EDT | Severe Thunderstorm Warning | DTX | Tuscola | 56 min |
| Mar 15, 6:44 PM EDT | Tornado Warning | DTX | Lapeer | 34 min |
| Mar 15, 6:45 PM EDT | Severe Thunderstorm Warning | DTX | Oakland | 29 min |
| Mar 15, 6:51 PM EDT | Flash Flood Warning | DTX | Washtenaw | 3 hr |
| Mar 15, 6:57 PM EDT | Special Marine Warning | DTX | 93 min | |
| Mar 15, 6:58 PM EDT | Tornado Warning | DTX | Lenawee, Monroe | 47 min |
| Mar 15, 7:03 PM EDT | Severe Thunderstorm Warning | DTX | Wayne | 25 min |
| Mar 15, 7:06 PM EDT | Severe Thunderstorm Warning | DTX | Huron, Sanilac | 54 min |
| Mar 15, 7:12 PM EDT | Special Marine Warning | DTX | 2 hr | |
| Mar 15, 7:17 PM EDT | Severe Thunderstorm Warning | DTX | Lapeer | 73 min |
| Mar 15, 7:26 PM EDT | Severe Thunderstorm Warning | DTX | Bay | 16 min |
| Mar 15, 7:47 PM EDT | Severe Thunderstorm Warning | DTX | Monroe | 52 min |
| Mar 15, 7:52 PM EDT | Severe Thunderstorm Warning | DTX | Lapeer | 47 min |
| Mar 15, 7:55 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee | 44 min |
Nearby
Flash Flood Warnings in Michigan, 2012Every flash flood warning in 2012
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.