Alert archive / Minnesota / Flash Flood Warnings in 2015

Flash Flood Warning 1, NWS Twin Cities, MN

June 17, 2015Freeborn County, Minnesota

NWS Twin Cities, MN issued this flash flood warning at Jun 17, 2015, 5:56 PM CDT for Freeborn County, Minnesota. 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: Jun 17, 2015, 5:56 PM CDT (22:56 UTC)
Expired: Jun 17, 2015, 9:00 PM CDT
In force: 3 hr
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Flood severity: None

County Freeborn County, MN

The radar

The Minneapolis radar (KMPX), 124 km from the middle of the area, began a volume at 23:00 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, 10.9 hours before the alert went out and 124 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 3208 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 225 m²/s²
0-3 km storm-relative helicity: 238 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.

177 
WGUS53 KMPX 172256
FFWMPX
MNC047-180200-
/O.NEW.KMPX.FF.W.0001.150617T2256Z-150618T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
556 PM CDT WED JUN 17 2015

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTH CENTRAL FREEBORN COUNTY IN SOUTH CENTRAL MINNESOTA...

* UNTIL 900 PM CDT
    
* AT 555 PM CDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. UP TO THREE INCHES OF RAIN HAVE
  ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  CLARKS GROVE.

THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 15 AND 19.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT ENTER OR CROSS FLOWING WATER OR WATER OF UNKNOWN DEPTH. 

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 4378 9330 4373 9321 4370 9329 4372 9344
      4375 9345 4377 9344

$$

ADL

1 follow-up statement

492 
WGUS73 KMPX 180019
FFSMPX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
719 PM CDT WED JUN 17 2015

MNC047-180028-
/O.CAN.KMPX.FF.W.0001.000000T0000Z-150618T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
FREEBORN MN-
719 PM CDT WED JUN 17 2015

...THE FLASH FLOOD WARNING FOR NORTH CENTRAL FREEBORN COUNTY IS
CANCELLED...

THE HEAVY RAIN HAS ENDED...AND FLOODING IS NO LONGER EXPECTED TO 
POSE A THREAT. ANY AREAS OF HIGH WATER WILL STEADILY RECEDE. 
HOWEVER...CAUTION STILL BE EXERCISED IF ENCOUNTERING ANY ROADS THAT 
HAVE HIGH WATER. DO NOT DRIVE INTO FLOODED AREAS. TURN 
AROUND...DON'T DROWN.

LAT...LON 4378 9330 4373 9321 4370 9329 4372 9344
      4375 9345 4377 9344

$$

JPC

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 17, 1:15 PM CDT	Special Weather Statement	MPX	Steele	45 min
Jun 17, 2:13 PM CDT	Special Weather Statement	MPX	Waseca	47 min
Jun 17, 2:30 PM CDT	Tornado Warning	MPX	Waseca	30 min
Jun 17, 2:38 PM CDT	Severe Thunderstorm Warning	MPX	Steele	67 min
Jun 17, 3:22 PM CDT	Severe Thunderstorm Warning	MPX	Freeborn	38 min
Jun 17, 4:23 PM CDT	Special Weather Statement	MPX	Freeborn	22 min
Jun 17, 4:37 PM CDT	Severe Thunderstorm Warning	MPX	Freeborn	53 min
Jun 17, 4:50 PM CDT	Special Weather Statement	MPX	Freeborn	25 min
Jun 17, 5:19 PM CDT	Special Weather Statement	MPX	Freeborn	56 min
Jun 17, 6:07 PM CDT	Special Weather Statement	MPX	Freeborn	53 min

Nearby

Flash Flood Warnings in Minnesota, 2015 Every flash flood warning in 2015

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.