Alert archive / Missouri / Red Flag Warnings in 2016

Red Flag Warning 3, NWS St. Louis, MO

April 2, 20168 counties in Missouri

NWS St. Louis, MO issued this red flag warning at Apr 2, 2016, 11:17 AM CDT for 8 counties in Missouri. It took effect at Apr 2, 2016, 12:00 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
Apr 2, 2016, 11:17 AM CDT (16:17 UTC)
In effect from
Apr 2, 2016, 12:00 PM CDT
Expired
Apr 2, 2016, 6:00 PM CDT
In force
6 hr
Issued by
NWS St. Louis, MO

Counties Crawford County, MO, Dent County, MO, Iron County, MO, Madison County, MO, Reynolds County, MO, Saint Francois County, MO, Sainte Genevieve County, MO, Washington County, MO

The radar

The St Louis radar (KLSX), 112 km from the middle of the area, began a volume at 16:17 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

Springfield, MO (KSGF), launched 12:00Z, 4.3 hours before the alert went out and 280 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, Springfield, MO at 12:00Z on 2016-04-02Temperature 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, Springfield, MO at 12:00Z on 2016-04-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 38 square meters per square second.193958Sfc1 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
1761 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
38 m²/s²
0-3 km storm-relative helicity
61 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

199 
WWUS83 KLSX 021617
RFWLSX

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE ST LOUIS MO
1117 AM CDT SAT APR 2 2016

MOZ072>075-083>085-099-022300-
/O.NEW.KLSX.FW.W.0003.160402T1700Z-160402T2300Z/
CRAWFORD MO-DENT MO-IRON MO-MADISON MO-REYNOLDS MO-
SAINT FRANCOIS MO-SAINTE GENEVIEVE MO-WASHINGTON MO-
1117 AM CDT SAT APR 2 2016

...RED FLAG WARNING IN EFFECT UNTIL 6 PM CDT THIS EVENING FOR
WIND AND LOW RELATIVE HUMIDITY FOR SOUTHEAST MISSOURI...

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A RED FLAG
WARNING FOR WIND AND LOW RELATIVE HUMIDITY...WHICH IS IN EFFECT
UNTIL 6 PM CDT THIS EVENING.

* AFFECTED AREA...IN MISSOURI...FIRE WEATHER ZONES 072...073... 
  074...075...083...084...085 AND 099.

* 20FT WINDS...WEST 15 TO 20 MPH WITH GUSTS UP TO 40 MPH.

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

* 10HR FUELS...LESS THAN 9 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.

&&

$$

TILLY
1 follow-up statement
597 
WWUS83 KLSX 022301
RFWLSX

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE ST LOUIS MO
601 PM CDT SAT APR 2 2016

MOZ072>075-083>085-099-030015-
/O.EXP.KLSX.FW.W.0003.000000T0000Z-160402T2300Z/
CRAWFORD MO-DENT MO-IRON MO-MADISON MO-REYNOLDS MO-
SAINT FRANCOIS MO-SAINTE GENEVIEVE MO-WASHINGTON MO-
601 PM CDT SAT APR 2 2016

...RED FLAG WARNING WILL EXPIRE AT 6 PM CDT THIS EVENING FOR WIND
AND LOW RELATIVE HUMIDITY FOR SOUTHEAST MISSOURI...

HUMIDITIES HAVE RISEN ABOVE 30 PERCENT IN MANY AREAS WITH
DIMINISHING WINDS. 

$$

TES

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 1, 9:11 PM CDTWind AdvisoryLSXJefferson, Lewis, Lincoln, Marion, Pike, Ralls and 3 more21 hr

Nearby

Red Flag Warnings in Missouri, 2016Every red flag warning in 2016

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.