Alert archive / Missouri / Flash Flood Warnings in 2017

Flash Flood Warning 17, NWS St. Louis, MO

July 13, 2017Iron County, Madison County, Reynolds County, Missouri

NWS St. Louis, MO issued this flash flood warning at Jul 13, 2017, 11:16 PM CDT for Iron County, Madison County, Reynolds County, Missouri. It was in force for 6 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jul 13, 2017, 11:16 PM CDT (04:16 UTC)
Expired
Jul 14, 2017, 5:15 AM CDT
In force
6 hr
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Flood severity
None

Counties Iron County, MO, Madison County, MO, Reynolds County, MO

The radar

The St Louis radar (KLSX), 153 km from the middle of the area, began a volume at 04:20 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.

What was reported inside it

TimeReportWhereRemark
Jul 14, 1:00 AM CDTFLASH FLOODGlover, MOSOUTH LANE OF ROUTE 21/49 CLOSED AT GLOVER DUE TO FLOWING WATER OVER THE ROADWAY.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 4.3 hours before the alert went out and 281 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 00:00Z on 2017-07-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1271 joules per kilogram.LCLLFCEL10008507005003002001001 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 00:00Z on 2017-07-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -11 square meters per square second.1939Sfc1 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
1271 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
1590 m above ground
0-6 km bulk shear
3 kt
0-1 km storm-relative helicity
-11 m²/s²
0-3 km storm-relative helicity
-16 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

318 
WGUS53 KLSX 140416
FFWLSX
MOC093-123-179-141015-
/O.NEW.KLSX.FF.W.0017.170714T0416Z-170714T1015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service St Louis MO
1116 PM CDT THU JUL 13 2017

The National Weather Service in St Louis has issued a

* Flash Flood Warning for...
  Southeastern Iron County in southeastern Missouri...
  Northeastern Reynolds County in southeastern Missouri...
  Madison County in southeastern Missouri...

* Until 515 AM CDT Friday.

* At 1114 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Up to three inches of rain has 
  fallen so far. Flash flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Reynolds, Ellington, Annapolis, Marquand, Buckhorn, Glover, Saco,
  Centerville, Des Arc, Corridon, Redford, Hogan, Vulcan, Sabula,
  Chloride and Lesterville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, country roads, farmland, and other low lying
spots.

&&

LAT...LON 3725 9108 3752 9108 3751 9014 3731 9014
      3732 9055 3727 9055 3727 9074 3724 9074

$$

Byrd
1 follow-up statement
848 
WGUS73 KLSX 141013
FFSLSX

Flash Flood Statement
National Weather Service St Louis MO
513 AM CDT FRI JUL 14 2017

MOC093-123-179-141022-
/O.EXP.KLSX.FF.W.0017.000000T0000Z-170714T1015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Iron MO-Reynolds MO-Madison MO-
513 AM CDT FRI JUL 14 2017

...THE FLASH FLOOD WARNING FOR SOUTHEASTERN IRON...NORTHEASTERN
REYNOLDS AND MADISON COUNTIES IN SOUTHEASTERN MISSOURI WILL EXPIRE AT
515 AM CDT...

The heavy rain has ended. Flash flooding is no longer expected to 
pose a threat. Please continue to heed any remaining road closures.

LAT...LON 3725 9108 3752 9108 3751 9014 3731 9014
      3732 9055 3727 9055 3727 9074 3724 9074

$$

Gosselin

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 13, 8:11 PM CDTSpecial Weather StatementLSXMoniteau49 min
Jul 13, 8:21 PM CDTSpecial Weather StatementLSXMadison39 min
Jul 13, 8:50 PM CDTFlash Flood WarningLSXMadison, Sainte Genevieve, Saint Francois6 hr

Nearby

Flash Flood Warnings in Missouri, 2017Every flash flood warning in 2017

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.