Alert archive / Minnesota / Flash Flood Warnings in 2008

Flash Flood Warning 2, NWS Twin Cities, MN

July 19, 2008Martin County, Minnesota

NWS Twin Cities, MN issued this flash flood warning at Jul 19, 2008, 4:11 PM CDT for Martin 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 19, 2008, 4:11 PM CDT (21:11 UTC)
Expired
Jul 19, 2008, 6:19 PM CDT
In force
2 hr
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Flood severity
None

County Martin County, MN

The radar

The Minneapolis radar (KMPX), 156 km from the middle of the area, began a volume at 21:13 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, 9.2 hours before the alert went out and 155 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 2008-07-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2008-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 34 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1477 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
34 m²/s²
0-3 km storm-relative helicity
95 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KMPX 192113
FFWMPX
MNC091-200115-
/O.NEW.KMPX.FF.W.0002.080719T2111Z-080720T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
411 PM CDT SAT JUL 19 2008

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  MARTIN COUNTY IN SOUTH CENTRAL MINNESOTA...

* UNTIL 815 PM CDT

* AT 411 PM CDT...RADAR DETECTED THUNDERSTORMS PRODUCING VERY
  HEAVY RAIN ACROSS MUCH OF THE AREA WEST OF FAIRMONT. THE STORMS
  PRODUCING THE HEAVIEST RAIN EXTENDED WEST TOWARD JACKSON.
  ESTIMATES FROM RADAR INDICATED THAT NEARLY 2 INCHES OF RAIN HAS
  FALLEN...AND ANOTHER TWO INCHES ARE POSSIBLE AS ADDITIONAL
  THUNDERSTORMS MOVE ACROSS THE WARNED AREA.

* SOME LOCATIONS THAT MAY BE AFFECTED INCLUDE...CEYLON...DUNNELL...
  FAIRMONT...GRANADA...TRIMONT...WELCOME AND EAST CHAIN.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IMMINENT.
IF YOU ARE IN THE WARNED AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY.

LAT...LON 4349 9486 4377 9488 4385 9426 4372 9424
      4370 9425 4350 9425 4349 9426 4348 9455

$$

TDK
1 follow-up statement
000 
WGUS73 KMPX 192319
FFSMPX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
616 PM CDT SAT JUL 19 2008

MNC091-192330-
/O.CAN.KMPX.FF.W.0002.000000T0000Z-080720T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MARTIN MN-
616 PM CDT SAT JUL 19 2008

...THE FLASH FLOOD WARNING FOR MARTIN COUNTY HAS BEEN CANCELLED...

HEAVY RAINS HAVE MOVED EAST OF FAIRMONT AND THE REST OF MARTIN 
COUNTY... AND NO REPORTS OF SIGNIFICANT FLOODING HAVE BEEN 
RECEIVED.  THERE HAD BEEN SOME FLOODED INTERSECTIONS IN WELCOME... 
BUT THAT HAS SINCE SUBSIDED.  THEREFORE...THE FLASH FLOOD WARNING 
FOR MARTIN COUNTY HAS BEEN CANCELLED.  

LAT...LON 4349 9486 4377 9488 4385 9426 4372 9424
      4370 9425 4350 9425 4349 9426 4348 9455

$$

TDK

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 19, 1:59 PM CDTSevere Thunderstorm WarningMPXSherburne46 min
Jul 19, 2:02 PM CDTTornado WarningMPXSherburne43 min
Jul 19, 2:16 PM CDTTornado WarningMPXIsanti, Mille Lacs44 min
Jul 19, 2:24 PM CDTSevere Thunderstorm WarningMPXAnoka, Isanti51 min
Jul 19, 2:35 PM CDTTornado WarningMPXAnoka, Isanti, Sherburne40 min
Jul 19, 2:59 PM CDTTornado WarningMPXChisago, Isanti20 min
Jul 19, 3:07 PM CDTTornado WarningMPXAnoka, Chisago, Isanti, Washington38 min
Jul 19, 6:03 PM CDTFlash Flood WarningMPXFreeborn2 hr

Nearby

Flash Flood Warnings in Minnesota, 2008Every flash flood warning in 2008

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.