Alert archive / Missouri / Flash Flood Warnings in 2017

Flash Flood Warning 13, NWS St. Louis, MO

June 15, 2017Monroe County, Pike County, Ralls County, Missouri

NWS St. Louis, MO issued this flash flood warning at Jun 15, 2017, 12:32 AM CDT for Monroe County, Pike County, Ralls County, Missouri. It was in force for 8 hr. 3 reports 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
Jun 15, 2017, 12:32 AM CDT (05:32 UTC)
Expired
Jun 15, 2017, 8:30 AM CDT
In force
8 hr
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Flood severity
None

Counties Monroe County, MO, Pike County, MO, Ralls County, MO

The radar

The St Louis radar (KLSX), 128 km from the middle of the area, began a volume at 05:34 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
Jun 15, 1:20 AM CDTFLASH FLOOD2 E Indian Creek, MONO SECONDARY OR MAJOR ROADS FLOODED. BUT SEVERAL LOW WATER CROSSINGS ARE FLOODED AROUND THE COUNTY.
Jun 15, 2:45 AM CDTFLOOD2 Nw Frankford, MOSMALL STREAM GAUGE ON SPENCER CREEK WENT ABOVE FLOOD STAGE.
Jun 15, 5:00 AM CDTHEAVY RAIN 4.33Bowling Green, MO

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

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 5.5 hours before the alert went out and 250 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, Davenport, at 00:00Z on 2017-06-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2336 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, Davenport, at 00:00Z on 2017-06-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 144 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
2336 J/kg
Mixed-layer CIN
-18 J/kg
Mixed-layer LCL
1021 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
144 m²/s²
0-3 km storm-relative helicity
213 m²/s²
Significant tornado parameter
1.4
Supercell composite
9.4

Open this sounding in Storm Lab

The text

As transmitted.

277 
WGUS53 KLSX 150532
FFWLSX
MOC137-163-173-151330-
/O.NEW.KLSX.FF.W.0013.170615T0532Z-170615T1330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service St Louis MO
1232 AM CDT THU JUN 15 2017

The National Weather Service in St Louis has issued a

* Flash Flood Warning for...
  Ralls County in northeastern Missouri...
  Monroe County in northeastern Missouri...
  Northern Pike County in northeastern Missouri...

* Until 830 AM CDT Thursday.

* At 1229 AM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Radar estimates that 2 to 
  locally 5 inches of rain has already fallen this evening across 
  portions of the area. Several roads in Ralls County were covered 
  with water. Two to three inches of additional rainfall is possible 
  through 400 am. Flash flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Hannibal, Bowling Green, Louisiana, Monroe City, Paris, Santa Fe,
  New London, Perry, Madison, Center, Clarksville, Frankford,
  Rensselaer, Curryville, Spaulding, Tarrants, Spencerburg, Woodlawn,
  Granville and Holliday.

This also includes  Union Covered Bridge Historic Site and Mark Twain
Lake Recreational Area.
 
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 3961 9230 3960 9219 3966 9218 3966 9172
      3967 9171 3969 9131 3955 9115 3951 9108
      3944 9103 3930 9080 3935 9231

$$

Glass
2 follow-up statements
430 
WGUS73 KLSX 150933
FFSLSX

Flash Flood Statement
National Weather Service St Louis MO
433 AM CDT THU JUN 15 2017

MOC137-163-173-151330-
/O.CON.KLSX.FF.W.0013.000000T0000Z-170615T1330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Ralls MO-Monroe MO-Pike MO-
433 AM CDT THU JUN 15 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 830 AM CDT FOR
RALLS...MONROE AND NORTHERN PIKE COUNTIES IN NORTHEASTERN MISSOURI...

At 429 AM CDT, the latest reports from local law enforcement 
indicated a few roads remained flooded due to heavy rainfall last 
night and early this morning. Flooding was also occuring on Spencer 
Creek in Frankford. Radar estimates storm total rainfall of 2 to 5 
inches. 

Some locations that will experience flooding include...
Hannibal, Bowling Green, Louisiana, Monroe City, Paris, Santa Fe, New
London, Perry, Madison, Center, Clarksville, Frankford, Rensselaer,
Curryville, Spaulding, Tarrants, Spencerburg, Woodlawn, Granville and
Holliday.

This also includes  Union Covered Bridge Historic Site and Mark Twain
Lake Recreational Area.
 
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 3961 9230 3960 9219 3966 9218 3966 9172
      3967 9171 3969 9131 3955 9115 3951 9108
      3944 9103 3930 9080 3935 9231

$$

Glass
911 
WGUS73 KLSX 151330
FFSLSX

Flash Flood Statement
National Weather Service St Louis MO
830 AM CDT THU JUN 15 2017

MOC137-163-173-151340-
/O.EXP.KLSX.FF.W.0013.000000T0000Z-170615T1330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Ralls MO-Monroe MO-Pike MO-
830 AM CDT THU JUN 15 2017

...THE FLASH FLOOD WARNING FOR RALLS...MONROE AND NORTHERN PIKE
COUNTIES IN NORTHEASTERN MISSOURI HAS EXPIRED...

Flood waters have receded. Flooding is no longer expected to pose a
threat. Please continue to heed any remaining road closures.

LAT...LON 3961 9230 3960 9219 3966 9218 3966 9172
      3967 9171 3969 9131 3955 9115 3951 9108
      3944 9103 3930 9080 3935 9231

$$

KD

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 14, 7:15 PM CDTAreal Flood AdvisoryLSXMarion, Pike, Ralls3 hr
Jun 14, 8:10 PM CDTSpecial Weather StatementLSXRalls50 min
Jun 14, 8:18 PM CDTSevere Thunderstorm WarningLSXPike, Ralls42 min
Jun 14, 9:11 PM CDTSpecial Weather StatementLSXPike, Ralls49 min
Jun 15, 12:17 AM CDTRiver Flood WarningLSXMarion32 hr
Jun 15, 12:26 AM CDTFlash Flood WarningLSXMarion, Shelby8 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.