Alert archive / Michigan / Flash Flood Warnings in 2011

Flash Flood Warning 3, NWS Detroit, MI

June 21, 2011Bay County, Midland County, Saginaw County, Michigan

NWS Detroit, MI issued this flash flood warning at Jun 21, 2011, 9:02 PM EDT for Bay County, Midland County, Saginaw County, Michigan. It was in force for 6 hr. 8 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: Jun 21, 2011, 9:02 PM EDT (01:02 UTC)
Expired: Jun 22, 2011, 3:00 AM EDT
In force: 6 hr
Issued by: NWS Detroit, MI
Area: Storm-based polygon
Flood severity: None

Counties Bay County, MI, Midland County, MI, Saginaw County, MI

The radar

The Detroit radar (KDTX), 115 km from the middle of the area, began a volume at 01:04 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
Jun 21, 10:45 PM EDT	FLASH FLOOD	Freeland, MI	8200 BLOCK OF GOLDFINCH ROAD IS CLOSED DUE TO STORM DRAINS BACKING UP AND 2 FEET OF WATER ON THE ROADS.
Jun 21, 10:50 PM EDT	HEAVY RAIN 1.15	5 W Saginaw, MI	2 HOUR RAINFALL TOTAL.
Jun 21, 11:16 PM EDT	FLASH FLOOD	Freeland, MI	THE INTERSECTION OF CARTER AND SARLE ROADS IS IMPASSABLE WITH WATER UP TO THE BOTTOM OF DOORS. ROADWAY DITCHES NEARBY ARE CLOSE TO BEING FULL.
Jun 21, 11:25 PM EDT	HEAVY RAIN 1.54	4 Nw Saginaw, MI	2 HOUR RAINFALL TOTAL.
Jun 22, 12:01 AM EDT	HEAVY RAIN 1.28	5 W Saginaw, MI	24 HOUR TOTAL.
Jun 22, 12:01 AM EDT	HEAVY RAIN 2.61	Midland, MI	24 HOUR TOTAL.
Jun 22, 12:15 AM EDT	HEAVY RAIN 1.28	5 W Saginaw, MI	1 HOUR RAINFALL TOTAL.
Jun 22, 1:00 AM EDT	HEAVY RAIN 3.11	Freeland, MI	24 HOUR TOTAL.

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, 1.0 hours before the alert went out and 114 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 3352 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 668 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 153 m²/s²
0-3 km storm-relative helicity: 180 m²/s²
Significant tornado parameter: 2.9
Supercell composite: 14.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

026 
WGUS53 KDTX 220102
FFWDTX
MIC017-111-145-220700-
/O.NEW.KDTX.FF.W.0003.110622T0102Z-110622T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
902 PM EDT TUE JUN 21 2011

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  BAY COUNTY IN SOUTHEAST MICHIGAN...
  MIDLAND COUNTY IN SOUTHEAST MICHIGAN...
  SAGINAW COUNTY IN SOUTHEAST MICHIGAN...

* UNTIL 300 AM EDT WEDNESDAY

* AT 855 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE
  WARNED AREA. RADAR ESTIMATES SHOW HOURLY RAINFALL UP TO 2 INCHES
  HAS ALREADY FALLEN OVER THE WARNED AREA...MAINLY BETWEEN HIGHWAYS
  20/10 AND M 46. ADDITIONAL RAINFALL OF 2 TO 3 INCHES IS POSSIBLE 
  IN THIS AREA AS WELL AS THE REST OF MIDLAND...SAGINAW...AND BAY
  COUNTIES. SPOTTERS HAVE ALSO REPORTED RAINFALL IN THE 3 TO 5 INCH
  RANGE BETWEEN ALMA...MOUNT PLEASANT...AND GRAND RAPIDS.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  AUBURN...BAY CITY...FREELAND...MIDLAND...SAGINAW...
  SANFORD...ST. CHARLES...BRIDGEPORT...ESSEXVILLE...KAWKAWLIN...
  LINWOOD...MERRILL...MUNGER..OIL CITY...PLEASANT VALLEY AND ZILWAUKEE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...
COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND
OTHER LOW LYING AREAS ARE SUBJECT TO FLOODING.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. DO
NOT ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND TO
ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN
WATER BEGINS RISING.

&&

LAT...LON 4381 8461 4383 8417 4400 8417 4400 8405
      4392 8403 4391 8391 4378 8392 4375 8395
      4368 8391 4359 8367 4359 8370 4322 8369
      4322 8393 4313 8393 4313 8436 4346 8438
      4347 8461

$$

BT

4 follow-up statements

230 
WGUS73 KDTX 220216
FFSDTX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
1016 PM EDT TUE JUN 21 2011

MIC017-111-145-220700-
/O.CON.KDTX.FF.W.0003.000000T0000Z-110622T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BAY MI-MIDLAND MI-SAGINAW MI-
1016 PM EDT TUE JUN 21 2011

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR SAGINAW...MIDLAND AND
BAY COUNTIES UNTIL 300 AM EDT...

AT 1007 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. 
TRI-CITIES AIRPORT REPORTED 2.77 INCHES OF RAIN OVER THE PAST TWO 
HOURS. SPOTTERS HAVE ALSO REPORTED RAINFALL IN THE 3 TO 5 INCH
RANGE BETWEEN ALMA...MOUNT PLEASANT...AND GRAND RAPIDS. THE HEAVIEST 
RAIN IS CURRENTLY FALLING OVER EASTERN SAGINAW AND BAY COUNTY WITH 
LIGHT TO MODERATE RAIN STILL OCCURRING OVER THE REST OF THE WARNED 
AREA. ADDITIONAL RAINFALL OF 1 TO 2 INCHES IS POSSIBLE.

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE...
AUBURN...BAY CITY...BIRCH RUN...CHESANING...COLEMAN...FRANKENMUTH...
FREELAND...MIDLAND...PINCONNING...SAGINAW...SANFORD...ST. CHARLES...
BENTLEY...BRIDGEPORT...EDENVILLE...ESSEXVILLE...KAWKAWLIN...
LINWOOD...MARION SPRINGS...MERRILL...MUNGER...OAKLEY...OIL CITY...
PLEASANT VALLEY AND ZILWAUKEE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLOODING OF SMALL CREEKS
AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY ROADS
AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW LYING
AREAS ARE ALSO SUBJECT TO FLOODING.

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. TURN AROUND AND MOVE UP TO HIGHER GROUND. DO NOT
STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

&&

LAT...LON 4381 8461 4383 8417 4400 8417 4400 8405
      4392 8403 4391 8391 4378 8392 4375 8395
      4368 8391 4359 8367 4359 8370 4322 8369
      4322 8393 4313 8393 4313 8436 4346 8438
      4347 8461

$$

AGD

832 
WGUS73 KDTX 220348
FFSDTX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
1148 PM EDT TUE JUN 21 2011

MIC017-111-145-220700-
/O.CON.KDTX.FF.W.0003.000000T0000Z-110622T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BAY MI-MIDLAND MI-SAGINAW MI-
1148 PM EDT TUE JUN 21 2011

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR SAGINAW...MIDLAND AND
BAY COUNTIES UNTIL 300 AM EDT...

AT 1140 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. 
TRI-CITIES AIRPORT REPORTED OVER THREE INCHES OF RAIN IN THREE 
HOURS. LIGHT TO MODERATE RAIN IS STILL OCCURRING OVER BAY AND 
EASTERN SAGINAW COUNTY. ADDITIONAL RAINFALL AROUND A HALF AN INCH 
WILL BE POSSIBLE OVER THE NEXT HOUR ACROSS THESE AREAS.  

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE...
AUBURN...BAY CITY...BIRCH RUN...CHESANING...COLEMAN...FRANKENMUTH...
FREELAND...MIDLAND...PINCONNING...SAGINAW...SANFORD...ST. CHARLES...
BENTLEY...BRIDGEPORT...EDENVILLE...ESSEXVILLE...KAWKAWLIN...
LINWOOD...MARION SPRINGS...MERRILL...MUNGER...OAKLEY...OIL CITY...
PLEASANT VALLEY AND ZILWAUKEE.

CENTRAL DISPATCH REPORTS SEVERAL ROADS ACROSS FREELAND ARE COVERED
WITH UP TO TWO FEET OF WATER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLOODING OF SMALL CREEKS
AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY ROADS
AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW LYING
AREAS ARE ALSO SUBJECT TO FLOODING.

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. TURN AROUND AND MOVE UP TO HIGHER GROUND. DO NOT
STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

&&

LAT...LON 4381 8461 4383 8417 4400 8417 4400 8405
      4392 8403 4391 8391 4378 8392 4375 8395
      4368 8391 4359 8367 4359 8370 4322 8369
      4322 8393 4313 8393 4313 8436 4346 8438
      4347 8461

$$

AGD

768 
WGUS73 KDTX 220523
FFSDTX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
123 AM EDT WED JUN 22 2011

MIC017-111-145-220700-
/O.CON.KDTX.FF.W.0003.000000T0000Z-110622T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BAY MI-MIDLAND MI-SAGINAW MI-
123 AM EDT WED JUN 22 2011

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR SAGINAW...MIDLAND AND
BAY COUNTIES UNTIL 300 AM EDT...

AT 117 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
ANOTHER CLUSTER OF THUNDERSTORM BETWEEN MOUNT PLEASANT AND LANSING 
MOVING NORTHEAST. THIS ACTIVITY WILL BRUSH THROUGH MIDLAND...BAY... 
AND SAGINAW COUNTIES WITH A BRIEF HEAVY DOWNPOUR. THIS ADDITIONAL 
RAINFALL IS NOT EXPECTED TO WORSEN FLOODING OVER THE REGION. A 
GRADUAL IMPROVEMENT IN EARLIER FLOODING WILL TAKE PLACE DURING THE 
EARLY MORNING HOURS. 

IN THE MEANTIME...RUNOFF FROM EARLIER EXCESSIVE RAINFALL WILL 
CONTINUE TO CAUSE FLOODING TO OCCUR IN LOCATIONS LIKE AUBURN...BAY 
CITY...BIRCH RUN... CHESANING... COLEMAN... FRANKENMUTH... 
FREELAND...MIDLAND...PINCONNING...SAGINAW...SANFORD...ST. 
CHARLES...BRIDGEPORT...ESSEXVILLE...KAWKAWLIN...LINWOOD...
OAKLEY...OIL CITY...PLEASANT VALLEY AND ZILWAUKEE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLOODING OF SMALL CREEKS
AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY ROADS
AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW LYING
AREAS ARE ALSO SUBJECT TO FLOODING.

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. TURN AROUND AND MOVE UP TO HIGHER GROUND. DO NOT
STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

&&

LAT...LON 4381 8461 4383 8417 4400 8417 4400 8405
      4392 8403 4391 8391 4378 8392 4375 8395
      4368 8391 4359 8367 4359 8370 4322 8369
      4322 8393 4313 8393 4313 8436 4346 8438
      4347 8461

$$

BT

953 
WGUS73 KDTX 220703
FFSDTX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
303 AM EDT WED JUN 22 2011

MIC017-111-145-220715-
/O.EXP.KDTX.FF.W.0003.000000T0000Z-110622T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BAY MI-MIDLAND MI-SAGINAW MI-
303 AM EDT WED JUN 22 2011

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR SAGINAW...MIDLAND
AND BAY COUNTIES HAS BEEN ALLOWED TO EXPIRE...

SCATTERED SHOWERS AND THUNDERSTORMS WILL LINGER OVER THE REGION 
EARLY THIS MORNING...BUT HEAVY RAIN ENDED SHORTLY AFTER MIDNIGHT... 
GIVING STREAMS AND CREEKS A CHANCE TO RECEDE ENOUGH TO EASE THE 
FLOODING HAZARD...AND ALLOW EXPIRATION OF THE WARNING. 

LOCAL LAW ENFORCEMENT ALSO INDICATED CONSIDERABLE IMPROVEMENT IN 
ROAD CONDITIONS FROM EARLIER IN THE NIGHT. HOWEVER...MOTORISTS 
SHOULD REMAIN ALERT FOR PONDING OF WATER ON AREA ROADS.

LAT...LON 4381 8461 4383 8417 4400 8417 4400 8405
      4392 8403 4391 8391 4378 8392 4375 8395
      4368 8391 4359 8367 4359 8370 4322 8369
      4322 8393 4313 8393 4313 8436 4346 8438
      4347 8461

$$

BT

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 21, 8:05 PM EDT	Severe Thunderstorm Warning	DTX	Monroe	55 min
Jun 21, 8:06 PM EDT	Special Marine Warning	DTX		83 min
Jun 21, 8:29 PM EDT	Severe Thunderstorm Warning	DTX	Bay, Midland, Saginaw	76 min
Jun 21, 8:36 PM EDT	Severe Thunderstorm Warning	DTX	Lenawee	22 min
Jun 21, 9:04 PM EDT	Severe Thunderstorm Warning	DTX	Shiawassee	56 min
Jun 21, 9:23 PM EDT	Special Marine Warning	DTX		97 min
Jun 21, 9:31 PM EDT	Tornado Warning	DTX	Genesee, Saginaw	33 min
Jun 21, 9:44 PM EDT	Severe Thunderstorm Warning	DTX	Bay, Genesee, Saginaw, Tuscola	76 min
Jun 21, 9:59 PM EDT	Severe Thunderstorm Warning	DTX	Shiawassee	15 min
Jun 21, 10:27 PM EDT	Flash Flood Warning	DTX	Genesee, Shiawassee	5 hr
Jun 21, 10:27 PM EDT	Special Marine Warning	DTX		45 min
Jun 21, 10:40 PM EDT	Areal Flood Advisory	DTX	Macomb, Saint Clair	4 hr
Jun 21, 10:43 PM EDT	Severe Thunderstorm Warning	DTX	Lapeer, Tuscola	42 min
Jun 21, 10:46 PM EDT	Severe Thunderstorm Warning	DTX	Saint Clair	49 min
Jun 21, 10:48 PM EDT	Special Marine Warning	DTX		87 min
Jun 22, 4:22 AM EDT	Flash Flood Watch	DTX	Bay, Genesee, Huron, Lapeer, Midland, Saginaw and 4 more	15 hr
Jun 22, 1:48 PM EDT	Severe Thunderstorm Warning	DTX	Saginaw, Shiawassee	72 min
Jun 22, 1:50 PM EDT	Severe Thunderstorm Warning	DTX	Bay, Midland	85 min
Jun 22, 1:56 PM EDT	Special Marine Warning	DTX		109 min
Jun 22, 2:06 PM EDT	Severe Thunderstorm Warning	DTX	Shiawassee	69 min
Jun 22, 2:09 PM EDT	Special Marine Warning	DTX		96 min
Jun 22, 2:15 PM EDT	Severe Thunderstorm Warning	DTX	Livingston, Washtenaw	46 min
Jun 22, 2:36 PM EDT	Severe Thunderstorm Warning	DTX	Tuscola	69 min
Jun 22, 2:41 PM EDT	Severe Thunderstorm Warning	DTX	Genesee	59 min
Jun 22, 3:12 PM EDT	Severe Thunderstorm Warning	DTX	Oakland	63 min
Jun 22, 3:15 PM EDT	Severe Thunderstorm Warning	DTX	Huron	90 min
Jun 22, 3:22 PM EDT	Severe Thunderstorm Warning	DTX	Lapeer, Tuscola	52 min
Jun 22, 3:42 PM EDT	Special Marine Warning	DTX		93 min
Jun 22, 3:42 PM EDT	Severe Thunderstorm Warning	DTX	Macomb, Saint Clair	93 min
Jun 22, 3:53 PM EDT	Severe Thunderstorm Warning	DTX	Tuscola	43 min
Jun 22, 4:00 PM EDT	Severe Thunderstorm Warning	DTX	Huron, Sanilac	45 min
Jun 22, 4:07 PM EDT	Special Marine Warning	DTX		98 min
Jun 22, 4:12 PM EDT	Tornado Warning	DTX	Macomb, Saint Clair	63 min
Jun 22, 4:44 PM EDT	Severe Thunderstorm Warning	DTX	Bay, Genesee, Saginaw	46 min
Jun 22, 4:45 PM EDT	Severe Thunderstorm Warning	DTX	Huron, Sanilac	30 min
Jun 22, 4:47 PM EDT	Special Marine Warning	DTX		58 min
Jun 22, 4:54 PM EDT	Severe Thunderstorm Warning	DTX	Lapeer, Tuscola	66 min
Jun 22, 5:15 PM EDT	Tornado Warning	DTX	Saint Clair	15 min
Jun 22, 5:22 PM EDT	Special Marine Warning	DTX		83 min
Jun 22, 5:30 PM EDT	Severe Thunderstorm Warning	DTX	Huron, Sanilac	75 min
Jun 22, 5:40 PM EDT	Severe Thunderstorm Warning	DTX	Lapeer, Macomb, Oakland, Saint Clair	80 min
Jun 22, 5:43 PM EDT	Special Marine Warning	DTX		107 min
Jun 22, 5:53 PM EDT	Special Marine Warning	DTX		97 min
Jun 22, 6:35 PM EDT	Special Marine Warning	DTX		55 min

Nearby

Flash Flood Warnings in Michigan, 2011 Every flash flood warning in 2011

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.