Alert archive / Wisconsin / Red Flag Warnings in 2015

Red Flag Warning 3, NWS La Crosse, WI

April 18, 20154 counties in Wisconsin

NWS La Crosse, WI issued this red flag warning at Apr 18, 2015, 4:03 AM CDT for 4 counties in Wisconsin. It took effect at Apr 18, 2015, 11:00 AM CDT. It was in force for 8 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 18, 2015, 4:03 AM CDT (09:03 UTC)
In effect from: Apr 18, 2015, 11:00 AM CDT
Expired: Apr 18, 2015, 7:00 PM CDT
In force: 8 hr
Issued by: NWS La Crosse, WI

Counties Adams County, WI, Jackson County, WI, Juneau County, WI, Monroe County, WI

The radar

The La Crosse radar (KARX), 73 km from the middle of the area, began a volume at 09:00 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

Green Bay/Straub, WI (KGRB), launched 00:00Z, 9.1 hours before the alert went out and 184 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: 2059 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 149 m²/s²
0-3 km storm-relative helicity: 244 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.

894 
WWUS83 KARX 180903
RFWARX

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE LA CROSSE WI
403 AM CDT SAT APR 18 2015

...BREEZY CONDITIONS AND LOW RELATIVE HUMIDITY WILL CREATE
CRITICAL FIRE WEATHER CONDITIONS TODAY...

.EAST WINDS WILL INCREASE TO 14 TO 18 MPH BY LATE THIS MORNING...
WITH GUSTS APPROACHING 25 MPH AT TIMES THIS AFTERNOON. THESE
WINDS COMBINED WITH RELATIVE HUMIDITY VALUES OF 19 TO 22 PERCENT
WILL CREATE CRITICAL FIRE WEATHER CONDITIONS BETWEEN 11 AM AND 7
PM TODAY.

WIZ034-042>044-181715-
/O.NEW.KARX.FW.W.0003.150418T1600Z-150419T0000Z/
JACKSON-MONROE-JUNEAU-ADAMS-
403 AM CDT SAT APR 18 2015

...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 7 PM CDT
THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR PORTIONS OF
CENTRAL WISCONSIN...

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT FROM 11 AM THIS MORNING TO 7 PM CDT
THIS EVENING. 

* AFFECTED AREA...IN WISCONSIN...JACKSON...MONROE...JUNEAU AND
  ADAMS COUNTIES.

* TIMING...11 AM TO 7 PM. 

* WIND...EAST WINDS INCREASING TO 14 TO 18 MPH BY LATE THIS
  MORNING WITH GUSTS APPROACHING 25 MPH AT TIMES THIS AFTERNOON. 

* HUMIDITY...FALLING INTO THE 19 TO 22 PERCENT RANGE THIS
  AFTERNOON. 

* TEMPERATURES...MAXIMUM TEMPERATURES OF 65 TO 68.

* IMPACTS...ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY.
  AVOID ALL OUTDOOR BURNING TODAY.

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.

&&

$$

WETENKAMP

3 follow-up statements

593 
WWUS83 KARX 181557
RFWARX

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE LA CROSSE WI
1057 AM CDT SAT APR 18 2015

...CRITICAL FIRE WEATHER CONDITIONS TODAY...

.GUSTY EAST WINDS...LOW HUMIDITIES AND DRY CONDITIONS WILL RESULT
IN CRITICAL FIRE WEATHER CONDITIONS. ANY FIRES THE DEVELOP TODAY
WILL SPREAD QUICKLY. OUTDOOR BURNING SHOULD BE AVOIDED.

WIZ034-042>044-190000-
/O.CON.KARX.FW.W.0003.150418T1600Z-150419T0000Z/
JACKSON-MONROE-JUNEAU-ADAMS-
1057 AM CDT SAT APR 18 2015

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING
FOR GUSTY WINDS AND LOW HUMIDITY FOR PORTIONS OF CENTRAL
WISCONSIN...

* AFFECTED AREA...IN WISCONSIN...JACKSON...MONROE...JUNEAU AND 
  ADAMS COUNTIES. 

* TIMING...11 AM TO 7 PM.

* EAST WINDS 14 TO 18 MPH...GUSTS APPROACHING 25.

* LOWEST AFTERNOON HUMIDITIES NEAR 20 PERCENT.

* MAX TEMPERATURES NEAR 70.

* IMPACTS...ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY. 
  AVOID ALL OUTDOOR BURNING TODAY.

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.

&&

$$

036 
WWUS83 KARX 181931
RFWARX

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE LA CROSSE WI
231 PM CDT SAT APR 18 2015

...CRITICAL FIRE WEATHER CONDITIONS REST OF THE AFTERNOON...

.GUSTY EAST WINDS...LOW HUMIDITIES AND DRY CONDITIONS HAVE LED TO 
CRITICAL FIRE WEATHER CONDITIONS FOR PORTIONS OF CENTRAL WISCONSIN.
ANY FIRES THE DEVELOP TODAY WILL SPREAD QUICKLY. OUTDOOR BURNING
SHOULD BE AVOIDED.

WIZ034-042>044-190000-
/O.CON.KARX.FW.W.0003.000000T0000Z-150419T0000Z/
JACKSON-MONROE-JUNEAU-ADAMS-
231 PM CDT SAT APR 18 2015

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING
FOR GUSTY WINDS AND LOW HUMIDITY FOR PORTIONS OF CENTRAL
WISCONSIN...

* AFFECTED AREA...IN WISCONSIN...JACKSON...MONROE...JUNEAU AND 
  ADAMS COUNTIES. 

* TIMING...TIL 7 PM.

* EAST WINDS 14 TO 18 MPH...GUSTS APPROACHING 25.

* LOWEST HUMIDITIES NEAR 20 PERCENT.

* MAX TEMPERATURES NEAR 70.

* IMPACTS...ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY. 
  AVOID ALL OUTDOOR BURNING TODAY.

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.

&&

$$

479 
WWUS83 KARX 182358
RFWARX

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE LA CROSSE WI
658 PM CDT SAT APR 18 2015

...RED FLAG WARNING EXPIRES AT 7 PM...

.CONDITIONS NO LONGER SUPPORT THE NEED FOR A WARNING...SO IT HAS
BEEN ALLOWED TO EXPIRE. 

WIZ034-042>044-190100-
/O.EXP.KARX.FW.W.0003.000000T0000Z-150419T0000Z/
JACKSON-MONROE-JUNEAU-ADAMS-
658 PM CDT SAT APR 18 2015

...RED FLAG WARNING WILL EXPIRE AT 7 PM CDT THIS EVENING FOR
GUSTY WINDS AND LOW HUMIDITY FOR CENTRAL WISCONSIN. 

WITH THE LOSS OF DAYTIME HEATING...WIND SPEEDS ARE DIMINISHING...
AND HUMIDITY IS CLIMBING. IMPROVING CONDITIONS NO LONGER SUPPORT
THE NEED FOR A RED FLAG WARNING SO IT HAS BEEN ALLOWED TO EXPIRE. 

$$

MW

Nearby

Red Flag Warnings in Wisconsin, 2015 Every red flag 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.