Alert archive / Minnesota / Red Flag Warnings in 2007

Red Flag Warning 1, NWS Twin Cities, MN

April 29, 20079 counties in Wisconsin; 14 counties in Minnesota

NWS Twin Cities, MN issued this red flag warning at Apr 29, 2007, 5:23 AM CDT for 9 counties in Wisconsin; 14 counties in Minnesota. It took effect at Apr 29, 2007, 12:00 PM CDT. It was in force for 7 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Apr 29, 2007, 5:23 AM CDT (10:23 UTC)
In effect from
Apr 29, 2007, 12:00 PM CDT
Expired
Apr 29, 2007, 7:00 PM CDT
In force
7 hr
Issued by
NWS Twin Cities, MN
All 23 counties

Anoka County, MN, Benton County, MN, Chisago County, MN, Hennepin County, MN, Isanti County, MN, Kanabec County, MN, Mille Lacs County, MN, Morrison County, MN, Ramsey County, MN, Sherburne County, MN, Stearns County, MN, Todd County, MN, Washington County, MN, Wright County, MN, Barron County, WI, Chippewa County, WI, Dunn County, WI, Eau Claire County, WI, Pepin County, WI, Pierce County, WI, Polk County, WI, Rusk County, WI, Saint Croix County, WI

The radar

The Minneapolis radar (KMPX), 71 km from the middle of the area, began a volume at 10:24 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 00:00Z, 10.4 hours before the alert went out and 73 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 00:00Z on 2007-04-29Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 2007-04-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 43 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
3490 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
43 m²/s²
0-3 km storm-relative helicity
88 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 
WWUS83 KMPX 291023
RFWMPX

RED FLAG WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
523 AM CDT SUN APR 29 2007

...RED FLAG WARNING IN EFFECT FOR PORTIONS OF CENTRAL MINNESOTA
AND ALL OF WEST CENTRAL WISCONSIN FROM NOON TODAY UNTIL 7 PM THIS
EVENING FOR VERY DRY CONDITIONS...STRONGER NORTHERLY WINDS...AND 
WARM TEMPERATURES...

.A COLD FRONT WILL MOVE FROM NORTHWEST MINNESOTA ACROSS CENTRAL
MINNESOTA AND WESTERN WISCONSIN BY EARLY AFTERNOON. WITH THIS
WILL COME A WIND SHIFT FROM SOUTHWESTERLY TO WESTERLY AHEAD OF THE
FRONT...AND THEN A SHARP TURN TO NORTHERLY BEHIND THE FRONT. WIND
SPEEDS WILL ALSO INCREASE WITH THE FRONTAL PASSAGE...WITH
SUSTAINED LOW LEVEL WIND SPEEDS AT TIMES APPROACHING 20 MPH DURING
THE AFTERNOON. HIGHER GUSTS ARE ANTICIPATED GIVEN THE ATMOSPHERIC
SETUP. TEMPERATURES ACROSS MUCH OF THE WARNING AREA WILL CLIMB
INTO THE UPPER 70S TO LOWER 80S AS RELATIVE HUMIDITY DROPS INTO
THE 22 TO 28 PERCENT RANGE. THE COMBINATION OF ABUNDANT DRY FUELS
AND THE DRY AND WINDY WEATHER CONDITIONS WILL CREATE SEVERE
WILDFIRE CONDITIONS.

MNZ068>070-291130-
/O.CAN.KMPX.FW.A.0001.070429T1800Z-070430T0000Z/
CARVER-SCOTT-DAKOTA-
523 AM CDT SUN APR 29 2007

...FIRE WEATHER WATCH IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES/CHANHASSEN HAS
CANCELLED THE FIRE WEATHER WATCH. 

THE FIRE WEATHER WATCH HAS BEEN CANCELLED FOR THE SOUTHWEST AND
SOUTH SIDES OF THE TWIN CITY METRO AREA. HOWEVER...DRY AND
OCCASIONALLY BREEZY CONDITIONS ARE EXPECTED DURING THE LATE
MORNING AND AFTERNOON. WITH THE DRY FUELS...THIS WILL CREATE
CRITICAL FIRE WEATHER CONDITIONS.

$$

MNZ042>045-049>053-059>063-WIZ014>016-023>028-291830-
/O.UPG.KMPX.FW.A.0001.070429T1800Z-070430T0000Z/
/O.NEW.KMPX.FW.W.0001.070429T1700Z-070430T0000Z/
TODD-MORRISON-MILLE LACS-KANABEC-STEARNS-BENTON-SHERBURNE-ISANTI-
CHISAGO-WRIGHT-HENNEPIN-ANOKA-RAMSEY-WASHINGTON-POLK-BARRON-RUSK-
ST. CROIX-PIERCE-DUNN-PEPIN-CHIPPEWA-EAU CLAIRE-
523 AM CDT SUN APR 29 2007

...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 7 PM CDT THIS
EVENING...

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES/CHANHASSEN HAS
ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM NOON TODAY TO
7 PM CDT THIS EVENING. THE FIRE WEATHER WATCH IS NO LONGER IN
EFFECT.

.A COLD FRONT WILL MOVE FROM NORTHWEST MINNESOTA ACROSS CENTRAL
MINNESOTA AND WESTERN WISCONSIN BY EARLY AFTERNOON. WITH THIS
WILL COME A WIND SHIFT FROM SOUTHWESTERLY TO WESTERLY AHEAD OF THE
FRONT...AND THEN A SHARP TURN TO NORTHERLY BEHIND THE FRONT. WIND
SPEEDS WILL ALSO INCREASE WITH THE FRONTAL PASSAGE...WITH
SUSTAINED LOW LEVEL WIND SPEEDS AT TIMES APPROACHING 20 MPH DURING
THE AFTERNOON. HIGHER GUSTS ARE ANTICIPATED GIVEN THE ATMOSPHERIC
SETUP. TEMPERATURES ACROSS MUCH OF THE WARNING AREA WILL CLIMB
INTO THE UPPER 70S TO LOWER 80S AS RELATIVE HUMIDITY DROPS INTO
THE 22 TO 28 PERCENT RANGE. THE COMBINATION OF ABUNDANT DRY FUELS
AND THE DRY AND WINDY WEATHER CONDITIONS WILL CREATE SEVERE
WILDFIRE CONDITIONS.

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF
STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL
CREATE EXPLOSIVE FIRE GROWTH POTENTIAL.

$$
1 follow-up statement
000 
WWUS83 KMPX 291746
RFWMPX

RED FLAG WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1246 PM CDT SUN APR 29 2007

...RED FLAG WARNING IN EFFECT FOR PORTIONS OF CENTRAL MINNESOTA
AND ALL OF WEST CENTRAL WISCONSIN UNTIL 7 PM THIS EVENING FOR
VERY DRY CONDITIONS...GUSTY NORTHERLY WINDS...AND WARM
TEMPERATURES...

.A COLD FRONT EXTENDED FROM HAYWARD WISCONSIN TO NEW ULM MINNESOTA 
AT NOON. BY 7 PM...IT WILL EXTEND FROM NORTHEASTERN WISCONSIN TO
SOUTHWESTERN WISCONSIN. BEHIND THE FRONT ACROSS EAST CENTRAL
MINNESOTA...AND WEST CENTRAL WISCONSIN...EXPECT NORTH OR NORTHWEST
WINDS CLOSE TO 20 MPH WITH HIGHER GUSTS. TEMPERATURES WILL BE IN
THE MIDDLE 70S TO MIDDLE 80S...AND RELATIVE HUMIDITIES WILL RANGE FROM
20 TO 28 PERCENT. THE COMBINATION OF ABUNDANT DRY FUELS AND THE
DRY AND WINDY WEATHER CONDITIONS WILL CREATE SEVERE WILDFIRE
CONDITIONS.

MNZ042>045-049>053-059>063-WIZ014>016-023>028-300000-
/O.CON.KMPX.FW.W.0001.000000T0000Z-070430T0000Z/
TODD-MORRISON-MILLE LACS-KANABEC-STEARNS-BENTON-SHERBURNE-ISANTI-
CHISAGO-WRIGHT-HENNEPIN-ANOKA-RAMSEY-WASHINGTON-POLK-BARRON-RUSK-
ST. CROIX-PIERCE-DUNN-PEPIN-CHIPPEWA-EAU CLAIRE-
1246 PM CDT SUN APR 29 2007

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS
EVENING...

A RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING.

.A COLD FRONT EXTENDED FROM HAYWARD WISCONSIN TO NEW ULM MINNESOTA 
AT NOON. BY 7 PM...IT WILL EXTEND FROM NORTHEASTERN WISCONSIN TO
SOUTHWESTERN WISCONSIN. BEHIND THE FRONT ACROSS EAST CENTRAL
MINNESOTA...AND WEST CENTRAL WISCONSIN...EXPECT NORTH OR NORTHWEST
WINDS CLOSE TO 20 MPH WITH HIGHER GUSTS. TEMPERATURES WILL BE IN
THE MIDDLE 70S TO MIDDLE 80S...AND RELATIVE HUMIDITIES WILL RANGE FROM
20 TO 28 PERCENT. THE COMBINATION OF ABUNDANT DRY FUELS AND THE
DRY AND WINDY WEATHER CONDITIONS WILL CREATE SEVERE WILDFIRE
CONDITIONS.

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF
STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL
CREATE EXPLOSIVE FIRE GROWTH POTENTIAL.

$$
RJN

Nearby

Red Flag Warnings in Minnesota, 2007Red Flag Warnings in Wisconsin, 2007Every red flag warning in 2007

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.