Alert archive / Minnesota / Red Flag Warnings in 2008

Red Flag Warning 2, NWS Twin Cities, MN

May 17, 200812 counties in Minnesota

NWS Twin Cities, MN issued this red flag warning at May 17, 2008, 10:15 AM CDT for 12 counties in Minnesota. It took effect at May 17, 2008, 1:00 PM CDT. It was in force for 6 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
May 17, 2008, 10:15 AM CDT (15:15 UTC)
In effect from
May 17, 2008, 1:00 PM CDT
Expired
May 17, 2008, 7:00 PM CDT
In force
6 hr
Issued by
NWS Twin Cities, MN

Counties Blue Earth County, MN, Brown County, MN, Chippewa County, MN, Faribault County, MN, Lac qui Parle County, MN, Martin County, MN, Nicollet County, MN, Redwood County, MN, Renville County, MN, Sibley County, MN, Watonwan County, MN, Yellow Medicine County, MN

The radar

The Minneapolis radar (KMPX), 115 km from the middle of the area, began a volume at 15:14 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, 3.3 hours before the alert went out and 113 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 2008-05-17Temperature 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 2008-05-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -75 square meters per square second.1939587897117Sfc1 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
3112 m above ground
0-6 km bulk shear
69 kt
0-1 km storm-relative helicity
-75 m²/s²
0-3 km storm-relative helicity
122 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 171515
RFWMPX

RED FLAG WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1015 AM CDT SAT MAY 17 2008

...RED FLAG WARNING THIS AFTERNOON FOR PORTIONS OF WEST CENTRAL
INTO SOUTH CENTRAL MINESOTA...

.INCREASING NORTHWEST WINDS...COMBINED WITH VERY DRY AIR...WILL
CREATE A DANGEROUS WILDFIRE THREAT FOR WEST CENTRAL INTO SOUTH
CENTRAL THIS AFTERNOON. BY MID AFTERNOON...MUCH OF THE AREA
SHOULD SEE WIND SPEEDS OF 20 TO 25 MPH WITH STRONGER GUSTS...AND
RELATIVE HUMIDITY FROM 20 TO 25 PERCENT. HIGH TEMPERATURES IN THE
MIDDLE AND UPPER 70S ARE EXPECTED.  

DURING THE EVENING HOURS WINDS WILL REMAIN GUSTY...BUT RELATIVE
HUMIDITY VALUES WILL BEGIN TO RISE AS TEMPERATURES BEGIN TO COOL.

THESE GUSTY WINDS AND LOW HUMIDITY VALUES ARE AHEAD OF STRONG HIGH
PRESSURE MOVING INTO THE NORTHERN PLAINS.

MNZ054-056-064-065-067-073>075-082-083-091-092-172315-
/O.NEW.KMPX.FW.W.0002.080517T1800Z-080518T0000Z/
LAC QUI PARLE-CHIPPEWA-YELLOW MEDICINE-RENVILLE-SIBLEY-REDWOOD-
BROWN-NICOLLET-WATONWAN-BLUE EARTH-MARTIN-FARIBAULT-
1015 AM CDT SAT MAY 17 2008

...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. 

INCREASING NORTHWEST WINDS...COMBINED WITH VERY DRY AIR...WILL
CREATE A DANGEROUS WILDFIRE THREAT FOR WEST CENTRAL INTO SOUTH
CENTRAL THIS AFTERNOON. BY MID AFTERNOON...MUCH OF THE AREA
SHOULD SEE WIND SPEEDS OF 20 TO 25 MPH WITH STRONGER GUSTS...AND
RELATIVE HUMIDITY FROM 20 TO 25 PERCENT. HIGH TEMPERATURES IN THE
MIDDLE AND UPPER 70S ARE EXPECTED.

DURING THE EVENING HOURS WINDS WILL REMAIN GUSTY...BUT RELATIVE
HUMIDITY VALUES WILL BEGIN TO RISE AS TEMPERATURES BEGIN TO COOL.

THESE GUSTY WINDS AND LOW HUMIDITY VALUES ARE AHEAD OF STRONG HIGH
PRESSURE MOVING INTO THE NORTHERN PLAINS.

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.

$$
TDK

Nearby

Red Flag Warnings in Minnesota, 2008Every red flag 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.