Alert archive / Minnesota / Flash Flood Warnings in 2009

Flash Flood Warning 16, NWS Grand Forks, ND

July 14, 2009Wadena County, Minnesota

NWS Grand Forks, ND issued this flash flood warning at Jul 14, 2009, 5:28 PM CDT for Wadena County, Minnesota. It was in force for 14 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, 5:28 PM CDT (22:28 UTC)
Expired: Jul 15, 2009, 7:00 AM CDT
In force: 14 hr
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Flood severity: None

County Wadena County, MN

The radar

The Minneapolis radar (KMPX), 210 km from the middle of the area, began a volume at 22:29 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.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this flash flood warning; the first came 30 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.5 hours before the alert went out and 208 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: 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 KFGF 142230
FFWFGF
MNC159-151200-
/O.NEW.KFGF.FF.W.0016.090714T2230Z-090715T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
528 PM CDT TUE JUL 14 2009

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHERN WADENA COUNTY IN CENTRAL MINNESOTA...

* UNTIL 700 AM CDT WEDNESDAY

* AT 527 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  INTENSE THUNDERSTORMS PRODUCING RAINFALLS OVER 4 INCHES ACROSS
  SOUTHERN WADENA COUNTY. ADDITIONAL STRONG THUNDERSTORMS WILL
  MOVE ACROSS THE WARNING AREA THIS EVENING ADDING TO RAINFALL
  TOTALS.

* SOME LOCATIONS IN THE WARNING INCLUDE WADENA...VERNDALE...STAPLES
  AIRPORT AND BLUE GRASS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT DRIVE YOUR
VEHICLE INTO WATER OF UNKNOWN DEPTH. ONE OR TWO FEET OF WATER WILL
FLOAT MOST CARS DOWNSTREAM.

&&

LAT...LON 4655 9514 4655 9479 4639 9479 4637 9474
      4638 9515

$$

EWENS

2 follow-up statements

000 
WGUS73 KFGF 150431
FFSFGF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1131 PM CDT TUE JUL 14 2009

MNC159-151200-
/O.CON.KFGF.FF.W.0016.000000T0000Z-090715T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WADENA MN-
1131 PM CDT TUE JUL 14 2009

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 700 AM CDT WEDNESDAY
FOR SOUTHERN WADENA COUNTY...

VERY HEAVY RAINFALL FROM THUNDERSTORMS THIS EVENING HAS THE 
POTENTIAL TO PRODUCE LOCALIZED FLOODING IN SOUTHERN WADENA COUNTY. 
PUBLIC REPORTS AND DOPPLER RADAR INDICATE OVER 4 INCHES OF RAINFALL 
OCCURRED THIS EVENING. THUNDERSTORMS HAVE ENDED...AND ANY ADDITIONAL 
PRECIPITATION OVERNIGHT WILL BE MINIMAL. HOWEVER COUNTY ROADS AND 
LOW LYING AREAS ARE STILL VULNERABLE TO FLOODING. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT DRIVE YOUR
VEHICLE INTO WATER OF UNKNOWN DEPTH. ONE OR TWO FEET OF WATER WILL
FLOAT MOST CARS DOWNSTREAM.

&&

LAT...LON 4655 9514 4655 9479 4639 9479 4637 9474
      4638 9515

$$

JK

000 
WGUS73 KFGF 151158
FFSFGF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
657 AM CDT WED JUL 15 2009

MNC159-151207-
/O.EXP.KFGF.FF.W.0016.000000T0000Z-090715T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WADENA MN-
658 AM CDT WED JUL 15 2009

...THE FLASH FLOOD WARNING WILL EXPIRE AT 700 AM CDT FOR SOUTHERN
WADENA COUNTY...

AT 657 AM CDT...NO FLOODING HAS BEEN REPORTED. SO THE WARNING WILL 
BE ALLOWED TO EXPIRE AT 700 AM CDT.

STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO OR TELEVISION OR
CABLE TELEVISION FOR ADDITIONAL INFORMATION.

LAT...LON 4655 9514 4655 9479 4639 9479 4637 9474
      4638 9515

$$

HOPPES

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Grand Forks, ND wrote its last area forecast discussion before this flash flood warning went out at Jul 14, 1:23 PM CDT, 4 hours 5 minutes earlier.

Area forecast discussion, Jul 14, 1:23 PM CDT, 4 hours 5 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GRAND FORKS ND
123 PM CDT TUE JUL 14 2009

.SHORT TERM...
THE MAIN CHALLENGE WILL BE THE POTENTIAL FOR SEVERE CONVECTION
THROUGH THIS AFTERNOON/EVENING...THEN TEMPS/WIND SPEEDS BEHIND THE
COLD FRONT FOR THE REST OF THIS WEEK. MODELS ARE IN OVERALL GOOD
AGREEMENT WITH THE CURRENT SCENARIO...BUT LIKE THE NAM DEWPOINTS
AND QPF PLACEMENT TODAY.

FOR THE REST OF THIS AFTERNOON/EVENING...EXPECT SHOWERS AND STORMS
TO MOVE FROM WEST TO EAST AHEAD OF VIGOROUS SHORTWAVE. SEVERE
POTENTIAL WILL HINGE ON AREAS THAT HEAT OUT THE MOST. IF
CONVECTIVE TEMPS IN THE UPPER 70S ARE REACHED...THEN SFC BASED
SEVERE CONVECTION IS POSSIBLE. THE BEST THREAT FOR SEVERE STORMS
APPEARS TO BE IN THE FAR SOUTH INTO THE EASTERN AREAS...WHERE
MLCAPES WILL BE NEAR 1500-2000J/KG. DEEP LAYERED (0-6KM) SHEAR WILL ALSO
INCREASE TO AROUND 45KT AFTER 18Z INTO THE VALLEY...THEN MOVE INTO
EASTERN AREAS BY 00Z. THIS WILL COINCIDE WITH THE SFC BOUNDARY AND
DEWPOINTS RISING TO NEAR 70 IN THE SOUTH. SUPERCELLS WILL BE
POSSIBLE GIVEN THE INCREASING SHEAR AND STRONG LIFTING...IN
ADDITION TO ADEQUATE CAPE AND LOWERED LCL/S. CAN/T RULE OUT
ISOLATED TORNADOES EITHER...BUT HAIL AND DAMAGING WINDS WILL
LIKELY BE THE MAIN THREATS. THE SYSTEM WILL QUICKLY MOVE THROUGH
THE REGION AFTER 06Z...AND CLEARING SHOULD MOVE IN BEHIND THE
FRONT. WINDS WILL ALSO INCREASE FROM THE W/NW...AND GUST OVER 20KT
WITH COLD ADVECTION.

FOR WED/THU...UNSEASONABLY COLD AIR (850MB TEMPS AROUND +4C) WILL
MOVE IN BEHIND THE FRONT. THERE WILL BE THE THREAT FOR SOME
WRAPAROUND PRECIP MAINLY IN THE NORTH AND EAST...BUT RAIN AMOUNTS
SHOULD BE LIGHT. TEMPS WILL BE COOL WITH WINDY CONDITIONS. WINDS
MAY BE CLOSE TO ADVISORY LEVELS MAINLY WED AFTERNOON...WITH A
FAIRLY DEEP ADIABATIC LAYER.

BY FRIDAY...THE PRESSURE GRADIENT WILL RELAX AS HIGH PRESSURE
BUILDS IN. EXPECT A DRY DAY WITH TEMPS STILL BELOW NORMAL...ALTHOUGH
IT WILL BE WARMER THAN WED/THU.

.LONG TERM...
ALL MODELS IN GOOD AGREEMENT FOR THE BEGINNING OF THE LONG TERM
PERIOD. STRONG UPPER LEVEL RIDGING WILL PROVIDE QUIET BUT COOLER
NORTHWESTERLY FLOW THROUGHOUT THE WEEKEND. THE NEXT CHANCE FOR PCPN
WILL BE EARLY NEXT WEEK AS A SHORTWAVE MOVES THROUGH THE 500 MB FLOW
AIDED BY A LOW PRESSURE SYSTEM SLIDING DOWN FROM CANADA. THE GFS AND
ECMWF CONTINUE TO SHOW DIFFERENCES IN TIMING WITH THE GFS 12-24 HRS
SLOWER. TEMPERATURES WILL REMAIN BELOW AVERAGE UNTIL EARLY NEXT WEEK
WITH THE POSSIBILITY OF A SLIGHT WARM UP TO MORE NORMAL TEMPERATURES.

&&

.AVIATION...
-TSRA POSSIBLE AT ALL SITES THROUGH THE EARLY AFTERNOON HOURS. MVFR
CONDITIONS LIKELY IN THE HEAVIER SHOWERS. MORE -TSRA POSSIBLE THIS
EVENING AT KGFK...KFAR...AND KDVL BUT CONFIDENCE REMAINS
QUESTIONABLE. SOUTHERLY WINDS WILL GRADUALLY SHIFT TO THE NORTHWEST
WITH PASSAGE OF A LOW PRESSURE TROUGH. WINDS WILL CONTINUE TO GUST
TO NEAR 25KTS INTO THE EVENING.

&&

.FGF WATCHES/WARNINGS/ADVISORIES...
ND...NONE.
MN...NONE.
&&

DK/HOMANN

Hazardous weather outlook, Jul 14, 12:45 PM CDT, 4 hours 43 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GRAND FORKS ND
1245 PM CDT TUE JUL 14 2009

MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024-
026>030-038-039-049-052>054-151115-
WEST POLK-NORMAN-CLAY-KITTSON-ROSEAU-LAKE OF THE WOODS-
WEST MARSHALL-EAST MARSHALL-NORTH BELTRAMI-PENNINGTON-RED LAKE-
EAST POLK-NORTH CLEARWATER-SOUTH BELTRAMI-MAHNOMEN-
SOUTH CLEARWATER-HUBBARD-WEST BECKER-EAST BECKER-WILKIN-
WEST OTTER TAIL-EAST OTTER TAIL-WADENA-GRANT-TOWNER-CAVALIER-
PEMBINA-BENSON-RAMSEY-EASTERN WALSH COUNTY-EDDY-NELSON-
GRAND FORKS-GRIGGS-STEELE-TRAILL-BARNES-CASS-RANSOM-SARGENT-
RICHLAND-WESTERN WALSH COUNTY-
1245 PM CDT TUE JUL 14 2009

...ISOLATED TO SCATTERED SEVERE THUNDERSTORMS ARE POSSIBLE OVER
THE AREA THIS AFTERNOON...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EASTERN NORTH
DAKOTA...WEST CENTRAL AND NORTHWEST MINNESOTA.

.DAY ONE...TODAY AND TONIGHT

MOISTURE WILL CONTINUE TO ADVECT NORTHWARD INTO EASTERN NORTH
DAKOTA AND NORTHWEST AND WEST CENTRAL MINNESOTA TODAY. SCATTERED
THUNDERSTORMS WILL BE POSSIBLE ANYTIME TODAY OVER THE ENTIRE
AREA. BUT AS A COLD FRONT APPROACHES FROM THE WEST A LINE OF
THUNDERSTORMS MAY DEVELOP IN THE DEVILS LAKE TO JAMESTOWN AREA
EARLY THIS AFTERNOON AND THEN MOVE INTO THE RED RIVER VALLEY LATE
THIS AFTERNOON AND INTO MINNESOTA EARLY THIS EVENING. A FEW OF
THESES STORMS MAY BECOME SEVERE WITH LARGE HAIL...HEAVY RAIN AND
DAMAGING WINDS THE MAIN THREAT...WITH A SMALL CHANCE FOR TORNADOES
IN EXTREME SOUTHEAST NORTH DAKOTA INTO WEST CENTRAL MINNESOTA ALONG
AND SOUTH OF INTERSTATE 94.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED THIS AFTERNOON AND EARLY EVENING.

DTR/DK

In the hours before

Special weather statement, Jul 14, 12:00 PM CDT, 5 hours 28 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1200 PM CDT TUE JUL 14 2009

MNZ029>031-040-NDZ053-141745-
WILKIN MN-GRANT MN-EAST OTTER TAIL MN-WEST OTTER TAIL MN-RICHLAND ND-
1200 PM CDT TUE JUL 14 2009

...THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN OTTER TAIL COUNTY IN
WEST CENTRAL MINNESOTA AND NORTHWESTERN GRANT COUNTY IN WEST CENTRAL
MINNESOTA AND WILKIN COUNTY IN WEST CENTRAL MINNESOTA AND
SOUTHEASTERN RICHLAND COUNTY IN SOUTHEAST NORTH DAKOTA...

UNTIL 1245 PM CDT

AT 1155 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
CLUSTER OF TRAINING THUNDERSTORMS CAPABLE OF PRODUCING HAIL UP TO
HALF AN INCH AND HEAVY RAINFALL OF UP TO ONE AND HALF INCH PER HOUR.
THE LEAD STORM WAS LOCATED 5 MILES SOUTH OF FOXHOME...OR 13 MILES
SOUTHWEST OF FERGUS FALLS...MOVING TO THE NORTHEAST AT 35 MPH. THE
RAINFALL MAY RESULT IN THE PONDING OF WATER IN LOW LYING AREAS.

THE THUNDERSTORM WILL BE NEAR...
ELIZABETH AT 1215 PM CDT...7 MILES SOUTHEAST OF ERHARD AT 1225 PM
CDT...EDWARDS AT 1230 PM CDT...MAPLEWOOD STATE PARK AT 1235 PM CDT...

INTERSTATE 94 BETWEEN MILE MARKER 55 AROUND 1210 PM CDT...AND MILE
MARKER 49 AROUND 1215 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE PREPARED TO TAKE SHELTER IF THE STORMS INTENSIFY AND BECOME
SEVERE...OR A WARNING IS ISSUED BY THE NATIONAL WEATHER SERVICE.

&&

LAT...LON 4649 9673 4663 9617 4643 9572 4586 9603
      4588 9625 4603 9626 4603 9659 4596 9659
      4595 9723 4633 9695
TIME...MOT...LOC 1657Z 228DEG 34KT 4622 9630

G2

Special weather statement, Jul 14, 1:14 PM CDT, 4 hours 14 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
114 PM CDT TUE JUL 14 2009

MNZ031-032-141900-
WADENA MN-EAST OTTER TAIL MN-
114 PM CDT TUE JUL 14 2009

...THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN WADENA COUNTY IN CENTRAL
MINNESOTA AND SOUTHEASTERN OTTER TAIL COUNTY IN WEST CENTRAL
MINNESOTA...

UNTIL 200 PM CDT

AT 113 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
THUNDERSTORM CAPABLE OF PRODUCING WINDS UP TO 50 MPH. THE STORM WAS
LOCATED 3 MILES NORTH OF URBANK...OR 29 MILES EAST OF FERGUS FALLS...
MOVING TO THE NORTHEAST AT 35 MPH.

THE THUNDERSTORM WILL BE NEAR...
PARKERS PRAIRIE AT 120 PM CDT...ALMORA AT 125 PM CDT...WRIGHTSTOWN AT
135 PM CDT...8 MILES SOUTHEAST OF WADENA AT 150 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE PREPARED TO TAKE SHELTER IF THE STORMS INTENSIFY AND BECOME
SEVERE...OR A WARNING IS ISSUED BY THE NATIONAL WEATHER SERVICE.

&&

LAT...LON 4652 9515 4647 9492 4639 9480 4638 9518
      4612 9518 4612 9559 4637 9574
TIME...MOT...LOC 1814Z 240DEG 37KT 4617 9548

G2

Special weather statement, Jul 14, 3:26 PM CDT, 2 hours 2 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
326 PM CDT TUE JUL 14 2009

MNZ032-142100-
WADENA MN-
326 PM CDT TUE JUL 14 2009

...THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN WADENA COUNTY IN CENTRAL
MINNESOTA...

UNTIL 400 PM CDT

AT 324 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
THUNDERSTORM CAPABLE OF PRODUCING WINDS UP TO 50 MPH. THE STORM WAS
LOCATED 2 MILES SOUTHEAST OF BLUE GRASS...OR 45 MILES SOUTHEAST OF
DETROIT LAKES...MOVING TO THE EAST AT 35 MPH.

THE THUNDERSTORM WILL BE NEAR...
OYLEN AT 340 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE PREPARED TO TAKE SHELTER IF THE STORMS INTENSIFY AND BECOME
SEVERE...OR A WARNING IS ISSUED BY THE NATIONAL WEATHER SERVICE.

&&

LAT...LON 4667 9479 4638 9479 4637 9515 4661 9515
TIME...MOT...LOC 2026Z 248DEG 29KT 4652 9497

G2

Special weather statement, Jul 14, 4:27 PM CDT, 1 hour 1 minute before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
427 PM CDT TUE JUL 14 2009

MNZ040-142215-
GRANT MN-
427 PM CDT TUE JUL 14 2009

...THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY FOR GRANT COUNTY IN WEST CENTRAL
MINNESOTA...

UNTIL 515 PM CDT

AT 426 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
THUNDERSTORM CAPABLE OF PRODUCING UP TO NICKEL SIZE HAIL...AND WINDS
UP TO 50 MPH. THE STORM WAS LOCATED 3 MILES NORTH OF NORCROSS...OR 26
MILES SOUTH OF FERGUS FALLS...MOVING TO THE EAST AT 35 MPH.

THE THUNDERSTORM WILL BE ABOUT...
7 MILES SOUTH OF WENDELL AT 440 PM CDT...ELBOW LAKE AT 450 PM CDT...
BARRETT AT 455 PM CDT...ERDAHL AT 500 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE PREPARED TO TAKE SHELTER IF THE STORMS INTENSIFY AND BECOME
SEVERE...OR A WARNING IS ISSUED BY THE NATIONAL WEATHER SERVICE.

&&

LAT...LON 4610 9577 4585 9578 4579 9624 4606 9626
TIME...MOT...LOC 2127Z 259DEG 30KT 4592 9621

DK

The office that day

Everything else NWS Grand Forks, ND issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 14, 12:00 PM CDT	Special Weather Statement	FGF	Grant, Wilkin	45 min
Jul 14, 12:10 PM CDT	Areal Flood Advisory	FGF	Grant, Otter Tail, Wilkin	7 hr
Jul 14, 1:14 PM CDT	Special Weather Statement	FGF	Otter Tail	46 min
Jul 14, 3:26 PM CDT	Special Weather Statement	FGF	Wadena	34 min
Jul 14, 3:31 PM CDT	Severe Thunderstorm Warning	FGF	Wadena	44 min
Jul 14, 4:27 PM CDT	Special Weather Statement	FGF	Grant	48 min
Jul 14, 4:30 PM CDT	Areal Flood Advisory	FGF	Becker, Hubbard, Otter Tail, Wadena	5 hr
Jul 14, 4:45 PM CDT	Severe Thunderstorm Warning	FGF	Grant	39 min
Jul 14, 5:15 PM CDT	Tornado Warning	FGF	Grant	18 min

Nearby

Flash Flood Warnings in Minnesota, 2009 Every 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.