Alert archive / Missouri / Red Flag Warnings in 2014

Red Flag Warning 4, NWS St. Louis, MO

March 26, 20147 counties in Illinois; 17 counties in Missouri

NWS St. Louis, MO issued this red flag warning at Mar 26, 2014, 2:50 AM CDT for 7 counties in Illinois; 17 counties in Missouri. It took effect at Mar 26, 2014, 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
Mar 26, 2014, 2:50 AM CDT (07:50 UTC)
In effect from
Mar 26, 2014, 11:00 AM CDT
Expired
Mar 26, 2014, 7:00 PM CDT
In force
8 hr
Issued by
NWS St. Louis, MO
All 24 counties

Adams County, IL, Brown County, IL, Calhoun County, IL, Greene County, IL, Jersey County, IL, Macoupin County, IL, Pike County, IL, Audrain County, MO, Boone County, MO, Callaway County, MO, Cole County, MO, Gasconade County, MO, Knox County, MO, Lewis County, MO, Lincoln County, MO, Marion County, MO, Moniteau County, MO, Monroe County, MO, Montgomery County, MO, Osage County, MO, Pike County, MO, Ralls County, MO, Shelby County, MO, Warren County, MO

The radar

The St Louis radar (KLSX), 91 km from the middle of the area, began a volume at 07:55 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

Lincoln, IL (KILX), launched 00:00Z, 7.8 hours before the alert went out and 261 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, Lincoln, IL at 00:00Z on 2014-03-26Temperature 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, Lincoln, IL at 00:00Z on 2014-03-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 23 square meters per square second.1939587897117136156Sfc1 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
1671 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
23 m²/s²
0-3 km storm-relative helicity
95 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.

460 
WWUS83 KLSX 260750
RFWLSX

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE ST LOUIS MO
250 AM CDT WED MAR 26 2014

ILZ095-MOZ018-019-026-027-034-035-041-042-047-048-050-270000-
/O.NEW.KLSX.FW.W.0004.140326T1600Z-140327T0000Z/
ADAMS IL-AUDRAIN MO-BOONE MO-CALLAWAY MO-COLE MO-KNOX MO-LEWIS MO-
MARION MO-MONITEAU MO-MONROE MO-RALLS MO-SHELBY MO-
250 AM CDT WED MAR 26 2014

...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 7 PM CDT
THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR MUCH OF CENTRAL 
AND NORTHEAST MISSOURI AND ADAMS COUNTY IN WEST-CENTRAL ILLINOIS...

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A RED FLAG
WARNING FOR WIND AND LOW RELATIVE HUMIDITY...WHICH IS IN EFFECT
FROM 11 AM THIS MORNING TO 7 PM CDT THIS EVENING.

* AFFECTED AREA...IN ILLINOIS...FIRE WEATHER ZONE 095. IN 
  MISSOURI...FIRE WEATHER ZONES 018...019...026...027...034...
  035... 041...042...047...048 AND 050.

* 20FT WINDS...SOUTH 15 TO 20 MPH WITH GUSTS UP TO 35 MPH.

* RELATIVE HUMIDITY...AS LOW AS 20 PERCENT.

* 10HR FUELS...6 TO 8 PERCENT.

* IMPACTS...THESE CONDITIONS ARE CONDUCIVE FOR THE RAPID SPREAD 
  AND GROWTH OF UNCONTROLLED WILDFIRES.

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 DRY FUELS CAN
CONTRIBUTE TO EXTREME FIRE BEHAVIOR.

&&

$$

ILZ058-059-096>099-MOZ036-049-051-052-059-060-270000-
/O.NEW.KLSX.FW.W.0004.140326T1900Z-140327T0000Z/
BROWN IL-CALHOUN IL-GASCONADE MO-GREENE IL-JERSEY IL-LINCOLN MO-
MACOUPIN IL-MONTGOMERY MO-OSAGE MO-PIKE IL-PIKE MO-WARREN MO-
250 AM CDT WED MAR 26 2014

...RED FLAG WARNING IN EFFECT FROM 2 PM THIS AFTERNOON TO 7 PM
CDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR PARTS 
OF WEST-CENTRAL AND SOUTHWEST ILLINOIS AND PARTS OF NORTHEAST...
CENTRAL...AND EAST-CENTRAL MISSOURI...

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A RED FLAG
WARNING FOR WIND AND LOW RELATIVE HUMIDITY...WHICH IS IN EFFECT
FROM 2 PM THIS AFTERNOON TO 7 PM CDT THIS EVENING.

* AFFECTED AREA...IN ILLINOIS...FIRE WEATHER ZONES 058...059... 
  096...097...098 AND 099. IN MISSOURI...FIRE WEATHER ZONES 
  036... 049...051...052...059 AND 060.

* 20FT WINDS...SOUTH 15 TO 20 MPH WITH GUSTS UP TO 30 MPH.

* RELATIVE HUMIDITY...AS LOW AS 19 PERCENT.

* 10HR FUELS...7 TO 8 PERCENT.

* IMPACTS...THESE CONDITIONS ARE CONDUCIVE FOR THE RAPID SPREAD 
  AND GROWTH OF UNCONTROLLED WILDFIRES.

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 DRY FUELS CAN
CONTRIBUTE TO EXTREME FIRE BEHAVIOR.

&&

$$

TES
1 follow-up statement
282 
WWUS83 KLSX 262353
RFWLSX

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE ST LOUIS MO
653 PM CDT WED MAR 26 2014

ILZ095-MOZ018-019-026-027-034-035-041-042-047-048-050-270100-
/O.EXP.KLSX.FW.W.0004.000000T0000Z-140327T0000Z/
ADAMS IL-AUDRAIN MO-BOONE MO-CALLAWAY MO-COLE MO-KNOX MO-LEWIS MO-
MARION MO-MONITEAU MO-MONROE MO-RALLS MO-SHELBY MO-
653 PM CDT WED MAR 26 2014

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

RELATIVE HUMIDITY LEVELS WILL BE RISING THIS EVENING AS RAIN MOVES
IN AND MORE HUMID AIR STREAMS IN ON SOUTHERLY WIND. THIS WILL
BRING THE WILD FIRE THREAT TO AN END.

$$

ILZ058-059-096>099-MOZ036-049-051-052-059-060-270100-
/O.EXP.KLSX.FW.W.0004.000000T0000Z-140327T0000Z/
BROWN IL-CALHOUN IL-GASCONADE MO-GREENE IL-JERSEY IL-LINCOLN MO-
MACOUPIN IL-MONTGOMERY MO-OSAGE MO-PIKE IL-PIKE MO-WARREN MO-
653 PM CDT WED MAR 26 2014

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

RELATIVE HUMIDITY LEVELS WILL BE RISING THIS EVENING AS RAIN MOVES
IN AND MORE HUMID AIR STREAMS IN ON SOUTHERLY WIND. THIS WILL
BRING THE WILD FIRE THREAT TO AN END.

$$

CARNEY

Nearby

Red Flag Warnings in Missouri, 2014Red Flag Warnings in Illinois, 2014Every red flag warning in 2014

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.