Alert archive / Minnesota / Red Flag Warnings in 2010

Red Flag Warning 3, NWS Twin Cities, MN

April 10, 20109 counties in Minnesota

NWS Twin Cities, MN issued this red flag warning at Apr 10, 2010, 10:06 AM CDT for 9 counties in Minnesota. It took effect at Apr 10, 2010, 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 10, 2010, 10:06 AM CDT (15:06 UTC)
In effect from
Apr 10, 2010, 12:00 PM CDT
Expired
Apr 10, 2010, 7:00 PM CDT
In force
7 hr
Issued by
NWS Twin Cities, MN

Counties Benton County, MN, Douglas County, MN, Kanabec County, MN, Mille Lacs County, MN, Morrison County, MN, Pope County, MN, Stearns County, MN, Stevens County, MN, Todd County, MN

The radar

The Minneapolis radar (KMPX), 135 km from the middle of the area, began a volume at 15:05 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, 3.1 hours before the alert went out and 134 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 2010-04-10Temperature 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 12:00Z on 2010-04-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -338 square meters per square second.1939587897Sfc1 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
1973 m above ground
0-6 km bulk shear
71 kt
0-1 km storm-relative helicity
-338 m²/s²
0-3 km storm-relative helicity
-236 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.

756 
WWUS83 KMPX 101506
RFWMPX

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1006 AM CDT SAT APR 10 2010

...RED FLAG WARNING FROM NOON TO 7 PM THIS EVENING FOR PART OF
CENTRAL MINNESOTA...

.EXTREMELY LOW RELATIVE HUMIDITY AND GUSTY WEST WINDS WILL CREATE
VERY DANGEROUS FIRE WEATHER CONDITIONS ACROSS CENTRAL MINNESOTA
THIS AFTERNOON. RELATIVE HUMIDITY WILL DROP TO AROUND 15 PERCENT
THIS AFTERNOON. WINDS WILL ALSO BEGIN TO GUST TO AROUND 20 MPH
DURING THE AFTERNOON. WITH EXTREMELY DRY FUEL CONDITIONS...
WILDFIRES COULD GROW VERY QUICKLY. THE RED FLAG WARNING IS ROUGHLY
ALONG AND NORTH OF A MORRIS...TO SAINT CLOUD...TO MORA LINE. THIS
RED FLAG WARNING UPGRADES THE FIRE WEATHER WATCH WHICH WAS IN
EFFECT.

MNZ041>045-047>050-102315-
/O.UPG.KMPX.FW.A.0001.100410T1700Z-100411T0000Z/
/O.NEW.KMPX.FW.W.0003.100410T1700Z-100411T0000Z/
DOUGLAS-TODD-MORRISON-MILLE LACS-KANABEC-STEVENS-POPE-STEARNS-
BENTON-
1006 AM CDT SAT APR 10 2010

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

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

EXTREMELY LOW RELATIVE HUMIDITY AND GUSTY WEST WINDS WILL CREATE
VERY DANGEROUS FIRE WEATHER CONDITIONS ACROSS CENTRAL MINNESOTA
THIS AFTERNOON. RELATIVE HUMIDITY WILL DROP TO AROUND 15 PERCENT
THIS AFTERNOON. WINDS WILL ALSO BEGIN TO GUST TO AROUND 20 MPH
DURING THE AFTERNOON. WITH EXTREMELY DRY FUEL CONDITIONS...
WILDFIRES COULD GROW VERY QUICKLY. THE RED FLAG WARNING IS ROUGHLY
ALONG AND NORTH OF A MORRIS...TO SAINT CLOUD...TO MORA LINE.

&&

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

$$
BAP
2 follow-up statements
781 
WWUS83 KMPX 102217
RFWMPX

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
517 PM CDT SAT APR 10 2010

...RED FLAG WARNING CONTINUES INTO EARLY EVENING FOR PART OF
CENTRAL MINNESOTA...

.EXTREMELY LOW RELATIVE HUMIDITY AND GUSTY WEST WINDS HAVE CREATED
DANGEROUS FIRE CONDITIONS ACROSS CENTRAL MINNESOTA THIS
AFTERNOON. RELATIVE HUMIDITY HAS DROPPED TO 7 TO 15 PERCENT THIS
AFTERNOON AND ARE ONLY VERY SLOWLY RISING. WEST WINDS HAVE GUSTED
TO NEAR 20 MPH ACROSS CENTRAL MINNESOTA. WITH THE EXTREMELY DRY
FUEL CONDITIONS...ANY WILDFIRES COULD GROW VERY QUICKLY.
THEREFORE...A RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM THIS
EVENING ROUGHLY ALONG AND NORTH OF A MORRIS...TO SAINT CLOUD...TO
MORA LINE. WHILE DRY CONDITIONS WILL BE SLOW TO IMPROVE THIS
EVENING...THE WINDS ARE EXPECTED TO DROP FAIRLY QUICKLY LIKELY
ENDING THE MOST SEVERE THREAT BY 7 PM.


MNZ041>045-047>050-110000-
/O.CON.KMPX.FW.W.0003.000000T0000Z-100411T0000Z/
DOUGLAS-TODD-MORRISON-MILLE LACS-KANABEC-STEVENS-POPE-STEARNS-
BENTON-
517 PM CDT SAT APR 10 2010

...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.

EXTREMELY LOW RELATIVE HUMIDITY AND GUSTY WEST WINDS HAVE CREATED
DANGEROUS FIRE CONDITIONS ACROSS CENTRAL MINNESOTA THIS
AFTERNOON. RELATIVE HUMIDITY HAS DROPPED TO 7 TO 15 PERCENT THIS
AFTERNOON AND ARE ONLY VERY SLOWLY RISING. WEST WINDS HAVE GUSTED
TO NEAR 20 MPH ACROSS CENTRAL MINNESOTA. WITH THE EXTREMELY DRY
FUEL CONDITIONS...ANY WILDFIRES COULD GROW VERY QUICKLY.
THEREFORE...A RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM THIS
EVENING ROUGHLY ALONG AND NORTH OF A MORRIS...TO SAINT CLOUD...TO
MORA LINE. WHILE DRY CONDITIONS WILL BE SLOW TO IMPROVE THIS
EVENING...THE WINDS ARE EXPECTED TO DROP FAIRLY QUICKLY LIKELY
ENDING THE MOST SEVERE THREAT BY 7 PM.

&&

$$
017 
WWUS83 KMPX 102350
RFWMPX

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
650 PM CDT SAT APR 10 2010

...WIND SPEEDS SUBSIDING AND EASING THE FIRE DANGER THIS 
EVENING...

.THE RED FLAG WARNING IN EFFECT FOR PART OF CENTRAL MINNESOTA 
WILL EXPIRE AT 7 PM THIS EVENING. WESTERLY WINDS...WHICH WERE
GUSTING NEAR 20 MPH...ARE SLOWLY SUBSIDING AND WILL DROP QUICKLY
THROUGH MID-EVENING. THIS WILL ALLOW THE IMMEDIATE FIRE WEATHER
DANGER TO SUBSIDE. HOWEVER...DRY ATMOSPHERIC AND GROUND CONDITIONS
WILL PREVAIL INTO EARLY THIS COMING WEEK. CONTINUE TO MONITOR THE
FIRE WEATHER FORECAST FOR MORE INFORMATION.

DURING THIS AFTERNOON ACROSS CENTRAL MINNESOTA...RELATIVE
HUMIDITY FELL TO EXTREMELY DRY VALUES...PRIMARILY IN THE 7 TO 15
PERCENT RANGE ACROSS CENTRAL MINNESOTA.


MNZ041>045-047>050-110100-
/O.EXP.KMPX.FW.W.0003.000000T0000Z-100411T0000Z/
DOUGLAS-TODD-MORRISON-MILLE LACS-KANABEC-STEVENS-POPE-STEARNS-
BENTON-
650 PM CDT SAT APR 10 2010

...RED FLAG WARNING WILL EXPIRE AT 7 PM CDT THIS EVENING...

THE RED FLAG WARNING WILL EXPIRE AT 7 PM CDT THIS EVENING. 

THE RED FLAG WARNING IN EFFECT FOR PART OF CENTRAL MINNESOTA 
WILL EXPIRE AT 7 PM THIS EVENING. WESTERLY WINDS...WHICH WERE
GUSTING NEAR 20 MPH...ARE SLOWLY SUBSIDING AND WILL DROP QUICKLY
THROUGH MID-EVENING. THIS WILL ALLOW THE IMMEDIATE FIRE WEATHER
DANGER TO SUBSIDE. HOWEVER...DRY ATMOSPHERIC AND GROUND CONDITIONS
WILL PREVAIL INTO EARLY THIS COMING WEEK. CONTINUE TO MONITOR THE
FIRE WEATHER FORECAST FOR MORE INFORMATION.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 10, 6:07 AM CDTFire Weather WatchMPXBenton, Douglas, Kanabec, Mille Lacs, Morrison, Pope and 3 more4 hr

Nearby

Red Flag Warnings in Minnesota, 2010Every red flag warning in 2010

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.