Alert archive / Minnesota / Flash Flood Warnings in 2009

Flash Flood Warning 3, NWS Twin Cities, MN

July 14, 2009Morrison County, Todd County, Minnesota

NWS Twin Cities, MN issued this flash flood warning at Jul 14, 2009, 5:48 PM CDT for Morrison County, Todd County, Minnesota. It was in force for 2 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
Jul 14, 2009, 5:48 PM CDT (22:48 UTC)
Expired
Jul 14, 2009, 7:52 PM CDT
In force
2 hr
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Flood severity
None

Counties Morrison County, MN, Todd County, MN

The radar

The Minneapolis radar (KMPX), 178 km from the middle of the area, began a volume at 22:47 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

Minneapolis, MN (KMPX), launched 12:00Z, 10.8 hours before the alert went out and 177 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-pSkew-T log-p diagram, Minneapolis, MN at 12:00Z on 2009-07-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 35 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2009-07-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 108 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
35 J/kg
Mixed-layer CIN
-90 J/kg
Mixed-layer LCL
1035 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
108 m²/s²
0-3 km storm-relative helicity
178 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KMPX 142248
FFWMPX
MNC097-153-150500-
/O.NEW.KMPX.FF.W.0003.090714T2248Z-090715T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
548 PM CDT TUE JUL 14 2009

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHERN TODD COUNTY IN CENTRAL MINNESOTA
  NORTHWESTERN MORRISON COUNTY IN CENTRAL MINNESOTA

* UNTIL MIDNIGHT CDT WEDNESDAY

* AT 544 PM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED SLOW
  MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED 
  AREA. LOCAL SHERIFF OFFICIALS IN TODD COUNTY INDICATED THAT 
  EVACUATIONS ARE OCCURRING AT STAPLES HIGH RISE APARTMENT AND WATER 
  WAS IN HOMES ALONG 5TH STREET...AS WELL AS KANSAS STREET. 

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  BERTHA...CLARISSA...CUSHING...EAGLE BEND...HEWITT...MOTLEY AND
  PHILBROOK.

AN ADDITIONAL ONE TO TWO INCHES OF RAINFALL IS POSSIBLE BEFORE IT 
ENDS THIS EVENING. RADAR HAS ESTIMATED THAT BETWEEN TWO TO THREE 
INCHES OF RAIN FELL ACROSS NORTHERN TODD AND NORTHERN MORRISON SINCE 
3 PM. 

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 4636 9464 4631 9455 4634 9442 4629 9434
      4624 9435 4623 9439 4620 9438 4607 9514
      4611 9516 4636 9515

$$

JLT
1 follow-up statement
000 
WGUS73 KMPX 150052
FFSMPX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
752 PM CDT TUE JUL 14 2009

MNC097-153-150058-
/O.CAN.KMPX.FF.W.0003.000000T0000Z-090715T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
TODD MN-MORRISON MN-
752 PM CDT TUE JUL 14 2009

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR NORTHWESTERN
MORRISON AND NORTHERN TODD COUNTIES IS CANCELLED...

AT 740 PM...THE TODD COUNTY SHERIFF REPORTED THAT THE STORM SEWERS 
WERE OPENING AND THE FLOODING THREAT WAS SUBSIDING. THE MAIN THREAT 
FOR ADDITIONAL THUNDERSTORM DEVELOPMENT HAS NOW PUSHED TO THE NORTH 
AND EAST. HOWEVER UNTIL THE MAIN SYSTEM MOVES THROUGH...THE THREAT 
FOR A SCATTERED THUNDERSTORM WILL CONTINUE THROUGH THE LATE EVENING 
HOURS. GIVEN THAT THE GROUND IS SATURATED...ANY ADDITIONAL RAINFALL 
WILL LIKELY CAUSE LOCALIZED FLOODING PROBLEMS.  

EVEN WITH THE ESTIMATED 3 TO 4 INCHES OF RAIN IN FAR NORTHWESTERN 
MORRISON COUNTY...NO FLOODING PROBLEMS WERE REPORTED.

IF FLOODING IS OCCURRING OR WAS OBSERVED PLEASE RELAY YOUR REPORT TO 
LOCAL LAW ENFORCEMENT OR TO THE NATIONAL WEATHER SERVICE IN THE TWIN 
CITIES.

LAT...LON 4636 9464 4631 9455 4634 9442 4629 9434
      4624 9435 4623 9439 4620 9438 4607 9514
      4611 9516 4636 9515

$$

DFC

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 14, 1:42 PM CDTSpecial Weather StatementMPXTodd78 min
Jul 14, 2:19 PM CDTSpecial Weather StatementMPXStearns41 min
Jul 14, 2:26 PM CDTSpecial Weather StatementMPXMorrison49 min
Jul 14, 3:06 PM CDTSpecial Weather StatementMPXPope39 min
Jul 14, 3:22 PM CDTSpecial Weather StatementMPXTodd38 min
Jul 14, 3:36 PM CDTSpecial Weather StatementMPXKandiyohi39 min
Jul 14, 3:47 PM CDTSevere Thunderstorm WarningMPXKandiyohi28 min
Jul 14, 3:49 PM CDTSevere Thunderstorm WarningMPXMorrison, Todd43 min
Jul 14, 4:11 PM CDTSpecial Weather StatementMPXPope49 min
Jul 14, 4:23 PM CDTTornado WarningMPXPope, Swift37 min
Jul 14, 4:36 PM CDTSevere Thunderstorm WarningMPXKandiyohi, Meeker, Stearns39 min
Jul 14, 4:44 PM CDTTornado WarningMPXKandiyohi, Meeker, Stearns46 min
Jul 14, 4:48 PM CDTTornado WarningMPXPope, Stearns42 min
Jul 14, 4:55 PM CDTSevere Thunderstorm WarningMPXDouglas50 min
Jul 14, 5:00 PM CDTTornado WarningMPXKandiyohi, Meeker, Stearns45 min
Jul 14, 5:13 PM CDTTornado WarningMPXDouglas47 min
Jul 14, 5:32 PM CDTTornado WarningMPXStearns28 min
Jul 14, 5:38 PM CDTSpecial Weather StatementMPXTodd37 min
Jul 14, 5:50 PM CDTSpecial Weather StatementMPXBenton25 min
Jul 14, 5:54 PM CDTSpecial Weather StatementMPXTodd66 min
Jul 14, 6:04 PM CDTSpecial Weather StatementMPXBenton26 min
Jul 14, 6:07 PM CDTSpecial Weather StatementMPXSherburne23 min
Jul 14, 6:11 PM CDTSevere Thunderstorm WarningMPXBenton, Sherburne, Stearns52 min
Jul 14, 6:18 PM CDTTornado WarningMPXBenton, Sherburne, Stearns42 min
Jul 14, 6:39 PM CDTSpecial Weather StatementMPXMorrison51 min
Jul 14, 6:41 PM CDTAreal Flood WarningMPXBenton, Stearns4 hr
Jul 14, 6:57 PM CDTSpecial Weather StatementMPXSherburne48 min

Nearby

Flash Flood Warnings in Minnesota, 2009Every flash flood warning in 2009

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.