Alert archive / Illinois / Areal Flood Warnings in 2011

Areal Flood Warning 57, NWS St. Louis, MO

June 18, 2011Macoupin County, Montgomery County, Illinois

NWS St. Louis, MO issued this areal flood warning at Jun 18, 2011, 1:06 PM CDT for Macoupin County, Montgomery County, Illinois. It was in force for 4 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: Jun 18, 2011, 1:06 PM CDT (18:06 UTC)
Expired: Jun 18, 2011, 5:00 PM CDT
In force: 4 hr
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Flood severity: None

Counties Macoupin County, IL, Montgomery County, IL

The radar

The St Louis radar (KLSX), 104 km from the middle of the area, began a volume at 18:07 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 12:00Z, 6.1 hours before the alert went out and 138 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: 833 J/kg
Mixed-layer CIN: -152 J/kg
Mixed-layer LCL: 608 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: -3 m²/s²
0-3 km storm-relative helicity: 53 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.5

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS St. Louis, MO wrote its last area forecast discussion before this areal flood warning went out at Jun 18, 12:45 PM CDT, 21 minutes earlier.

Area forecast discussion, Jun 18, 12:45 PM CDT, 21 minutes before

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Hazardous weather outlook, Jun 18, 7:50 AM CDT, 5 hours 16 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ST LOUIS MO
750 AM CDT SAT JUN 18 2011

ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027-
034>036-041-042-047>052-059>065-072>075-084-085-099-191200-
GREENE IL-MACOUPIN IL-MONTGOMERY IL-BOND IL-FAYETTE IL-CLINTON IL-
MARION IL-WASHINGTON IL-RANDOLPH IL-ADAMS IL-BROWN IL-PIKE IL-
CALHOUN IL-JERSEY IL-MADISON IL-ST. CLAIR IL-MONROE IL-KNOX MO-
LEWIS MO-SHELBY MO-MARION MO-MONROE MO-RALLS MO-PIKE MO-BOONE MO-
AUDRAIN MO-MONITEAU MO-COLE MO-OSAGE MO-CALLAWAY MO-MONTGOMERY MO-
LINCOLN MO-GASCONADE MO-WARREN MO-ST. CHARLES MO-FRANKLIN MO-
ST. LOUIS MO-ST. LOUIS CITY MO-JEFFERSON MO-CRAWFORD MO-
WASHINGTON MO-ST. FRANCOIS MO-STE. GENEVIEVE MO-IRON MO-
MADISON MO-REYNOLDS MO-
750 AM CDT SAT JUN 18 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EASTERN AND
CENTRAL MISSOURI AS WELL AS WEST CENTRAL AND SOUTHWEST ILLINOIS.

.DAY ONE...TODAY AND TONIGHT

AFTER A ROUND OF EARLY MORNING STORMS...THUNDERSTORMS ARE
EXPECTED TO REDEVELOP ACROSS THE AREA THIS AFTERNOON...AND
ESPECIALLY TONIGHT. DAMAGING WINDS AND LARGE HAIL WILL BE THE
PRIMARY THREATS...ALONG WITH VERY HEAVY RAINS.

MAJOR RIVER FLOODING IS OCCURRING AT POINTS ON THE MISSISSIPPI
RIVER NORTH OF ST LOUIS. PLEASE SEE THE MISSISSIPPI RIVER FLOOD
STATEMENT FOR FURTHER DETAILS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

THE CHANCE OF THUNDERSTORMS IS EXPECTED TO SHIFT INTO NORTHERN
MISSOURI AND CENTRAL ILLINOIS ON SUNDAY.

THUNDERSTORMS WILL OVERSPREAD THE ENTIRE AREA ONCE AGAIN EARLY
TUESDAY THROUGH WEDNESDAY NIGHT AS A COLD FRONT PUSHES INTO THE
MISSISSIPPI VALLEY.

MAJOR RIVER FLOODING IS FORECAST TO CONTINUE AT POINTS ON THE
MISSISSIPPI RIVER NORTH OF ST LOUIS. MAJOR RIVER FLOODING IS
FORECAST TO BEGIN ON THE ILLINOIS RIVER AT HARDIN LATE FRIDAY
NIGHT. PLEASE SEE THE APPROPRIATE FLOOD STATEMENTS FOR DETAILS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NECESSARY THIS AFTERNOON AND TONIGHT. IN
ADDITION...SPOTTERS ARE REQUESTED TO REPORT ANY FLOODING OR
RAINFALLS IN EXCESS OF ONE INCH.

TRUETT

In the hours before

Local storm report, Jun 18, 9:41 AM CDT, 3 hours 25 minutes before

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Local storm report, Jun 18, 10:28 AM CDT, 2 hours 38 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE ST LOUIS MO
1028 AM CDT SAT JUN 18 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0121 AM     TSTM WND DMG     8 W VIRDEN              39.50N  89.92W
06/18/2011                   MACOUPIN           IL   AMATEUR RADIO

            TREE LIMBS DOWN...NO SIZE AVAILABLE AT THIS TIME.

0333 AM     TSTM WND DMG     TIPTON                  38.65N  92.78W
06/18/2011                   MONITEAU           MO   LAW ENFORCEMENT

            LARGE TREE DOWN AND ROOF PARTIALLY OFF A METAL
            OUTBUILDING IN TIPTON.

0350 AM     TSTM WND DMG     COLUMBIA                38.95N  92.33W
06/18/2011                   BOONE              MO   LAW ENFORCEMENT

            TWO TREES HAVE FALLEN ONTO A HOUSE IN COLUMBIA

0400 AM     FLASH FLOOD      HILLSBORO               39.16N  89.48W
06/18/2011                   MONTGOMERY         IL   LAW ENFORCEMENT

            VIADUCT FLOODED IN TOWN.

0400 AM     FLASH FLOOD      1 N IRVING              39.22N  89.41W
06/18/2011                   MONTGOMERY         IL   LAW ENFORCEMENT

            ROUTE 16 FLOODED.

0402 AM     TSTM WND DMG     HALLSVILLE              39.12N  92.22W
06/18/2011                   BOONE              MO   LAW ENFORCEMENT

            POWER LINES DOWN...TRANSFORMER ON FIRE.

0410 AM     FLASH FLOOD      RAYMOND                 39.32N  89.57W
06/18/2011                   MONTGOMERY         IL   LAW ENFORCEMENT

            VIADUCT FLOODED IN TOWN TO A DEPTH OF 3 TO 4 FEET.

0412 AM     TSTM WND GST     TAOS                    38.50N  92.08W
06/18/2011  E40 MPH          COLE               MO   TRAINED SPOTTER

0415 AM     TSTM WND DMG     FULTON                  38.85N  91.95W
06/18/2011                   CALLAWAY           MO   LAW ENFORCEMENT

            TREES AND POWER LINES DOWN IN FULTON...TREE ALSO FELL
            ON A CAR AT WESTMINSTER COLLEGE IN FULTON. A STREET SIGN
            WAS PULLED OUT OF THE GROUND AND BLEW PAST A POLICEMAN
            JUST WEST OF FULTON.

0443 AM     TSTM WND DMG     NEW FLORENCE            38.91N  91.45W
06/18/2011                   MONTGOMERY         MO   LAW ENFORCEMENT

            SEMI FLIPPED OVER ON INTERSTATE 70 NEAR MILE MARKER
            175.

0443 AM     TSTM WND DMG     3 SE MONTGOMERY CITY    38.94N  91.47W
06/18/2011                   MONTGOMERY         MO   LAW ENFORCEMENT

            NUMEROUS TREES AND POWER LINES DOWNED ON HIGHWAY 19
            BETWEEN INTERSTATE 70 AND MONTGOMERY CITY. HIGHWAY
            PATROL NOW REPORTS AT LEAST 2 SEMIS BLOWN OVER IN
            MONTGOMERY COUNTY ALONG INTERSTATE 70. CORRECTED TIME OF
            OCCURRANCE

0452 AM     HAIL             RHINELAND               38.72N  91.52W
06/18/2011  M0.25 INCH       MONTGOMERY         MO   TRAINED SPOTTER

0511 AM     TSTM WND DMG     MONROE CITY             39.65N  91.73W
06/18/2011                   MONROE             MO   LAW ENFORCEMENT

            TREES DOWN

0511 AM     TSTM WND DMG     3 NW MONROE CITY        39.68N  91.77W
06/18/2011                   MARION             MO   FIRE DEPT/RESCUE

            *** 3 INJ *** THUNDERSTORM WIND KNOCKED MOBILE HOME OFF
            OF ITS FOUNDATION ON COUNTY ROAD 216. ONLY MINOR
            INJURIES. MOBILE HOME WAS COMPLETELY DEMOLISHED.

0529 AM     HAIL             3 S HANNIBAL            39.66N  91.38W
06/18/2011  E0.25 INCH       RALLS              MO   TRAINED SPOTTER

            NEAR INTERSECTION OF ROUTE M AND HIGHWAY 61.

0530 AM     FLASH FLOOD      SALEM                   38.63N  88.95W
06/18/2011                   MARION             IL   EMERGENCY MNGR

            FLOODED ROADS THROUGHOUT COUNTY...SOME WITH ONE TO TWO
            FEET OF WATER. SEVERAL CARS HAVE BEEN STRANDED IN THE
            FLOOD WATERS.

0534 AM     TSTM WND DMG     FLINT HILL              38.85N  90.86W
06/18/2011                   ST. CHARLES        MO   EMERGENCY MNGR

            A COUPLE OF THREE INCH TREE LIMBS BLOWN DOWN.

0540 AM     TSTM WND DMG     3 NNE O'FALLON          38.82N  90.70W
06/18/2011                   ST. CHARLES        MO   TRAINED SPOTTER

            TWELVE INCH DIAMETER TREE BLOWN DOWN.

0540 AM     TSTM WND DMG     1 N O'FALLON            38.80N  90.71W
06/18/2011                   ST. CHARLES        MO   EMERGENCY MNGR

            FOUR INCH TREE LIMB BLOWN DOWN ONTO A PICKUP TRUCK.

0543 AM     HEAVY RAIN       FLINT HILL              38.85N  90.86W
06/18/2011  M1.34 INCH       ST. CHARLES        MO   TRAINED SPOTTER

            FELL IN 15 MINUTES.

0545 AM     FLASH FLOOD      CARLYLE                 38.62N  89.37W
06/18/2011                   CLINTON            IL   TRAINED SPOTTER

            STREETS WERE FLOODED IN TOWN...HAS SINCE RECEEDED.

0558 AM     TSTM WND GST     ORCHARD FARMS           38.88N  90.45W
06/18/2011  E50 MPH          ST. CHARLES        MO   TRAINED SPOTTER

0600 AM     TSTM WND GST     4 NNE ORCHARD FARMS     38.93N  90.42W
06/18/2011  M60 MPH          ST. CHARLES        MO   ASOS

            AT SMART FIELD.

0600 AM     HEAVY RAIN       1 NW O'FALLON           38.79N  90.72W
06/18/2011  M1.50 INCH       ST. CHARLES        MO   TRAINED SPOTTER

            SINCE 530 AM.

0600 AM     FLASH FLOOD      VIRDEN                  39.50N  89.77W
06/18/2011                   MACOUPIN           IL   LAW ENFORCEMENT

            LOTS OF COUNTY ROADS FLOODED NEAR VIRDEN.

0622 AM     TSTM WND GST     MASCOUTAH               38.51N  89.81W
06/18/2011  M62 MPH          ST. CLAIR          IL   TRAINED SPOTTER

0624 AM     TSTM WND GST     COLUMBIA                38.46N  90.23W
06/18/2011  E70 MPH          MONROE             IL   TRAINED SPOTTER

0640 AM     HAIL             MARYVILLE               38.73N  89.96W
06/18/2011  M0.25 INCH       MADISON            IL   TRAINED SPOTTER

0653 AM     HAIL             LEBANON                 38.60N  89.81W
06/18/2011  M0.25 INCH       ST. CLAIR          IL   TRAINED SPOTTER

0654 AM     TSTM WND GST     NEW BADEN               38.54N  89.70W
06/18/2011  M54 MPH          CLINTON            IL   TRAINED SPOTTER

0654 AM     HAIL             NEW BADEN               38.54N  89.70W
06/18/2011  M0.25 INCH       CLINTON            IL   TRAINED SPOTTER

0658 AM     TSTM WND GST     AVISTON                 38.61N  89.61W
06/18/2011  M45 MPH          CLINTON            IL   TRAINED SPOTTER

0700 AM     FLOOD            LEBANON                 38.60N  89.81W
06/18/2011                   ST. CLAIR          IL   AMATEUR RADIO

            ROADS FLOODED IN LEBANON AND SMITHTON AREAS WITH 4 TO 6
            INCHES OF WATER.

0706 AM     HAIL             GIRARD                  39.45N  89.78W
06/18/2011  E0.25 INCH       MACOUPIN           IL   TRAINED SPOTTER

0718 AM     TSTM WND GST     HOYLETON                38.45N  89.27W
06/18/2011  E60 MPH          WASHINGTON         IL   TRAINED SPOTTER

            VERY LITTLE BIT OF HAIL.

0718 AM     HAIL             HOYLETON                38.45N  89.27W
06/18/2011  E0.25 INCH       WASHINGTON         IL   TRAINED SPOTTER

            VERY LITTLE BIT OF HAIL.

0721 AM     HAIL             CARLYLE                 38.62N  89.37W
06/18/2011  E0.25 INCH       CLINTON            IL   TRAINED SPOTTER

0733 AM     TSTM WND DMG     4 S PITTSBURG           38.81N  89.21W
06/18/2011                   FAYETTE            IL   LAW ENFORCEMENT

            SEVERAL TREES BLOWN DOWN...A FEW ONTO POWER LINES.

0734 AM     HAIL             CENTRALIA               38.52N  89.13W
06/18/2011  E0.25 INCH       MARION             IL   TRAINED SPOTTER

0738 AM     TSTM WND DMG     RAMSEY                  39.14N  89.11W
06/18/2011                   FAYETTE            IL   LAW ENFORCEMENT

            TREES BLOWN DOWN...A FEW ONTO POWER LINES.

0752 AM     HEAVY RAIN       CENTRALIA               38.52N  89.13W
06/18/2011  E2.50 INCH       MARION             IL   TRAINED SPOTTER

            SINCE 3 AM. SOME FLOODING OF STREETS AND YARDS
            NORTHEAST OF AIRPORT. CORRECTED TO LOCATION.

0755 AM     HEAVY RAIN       2 NNE OAKVILLE          38.47N  90.30W
06/18/2011  M2.25 INCH       ST. LOUIS          MO   TRAINED SPOTTER

            IN LAST 20 HOURS.

0832 AM     HEAVY RAIN       MEHLVILLE               38.50N  90.32W
06/18/2011  M2.55 INCH       ST. LOUIS          MO   PUBLIC

            24 HOUR RAINFALL

0855 AM     FLASH FLOOD      HILLSBORO               39.16N  89.48W
06/18/2011                   MONTGOMERY         IL   LAW ENFORCEMENT

            NUMEROUS ROADS FLOODED IN THE NORTHERN AND EASTERN
            PORTIONS OF THE COUNTY.

&&

BYRD

Local storm report, Jun 18, 10:48 AM CDT, 2 hours 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1048 AM CDT SAT JUN 18 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1045 AM     FLASH FLOOD      CARLYLE                 38.62N  89.37W
06/18/2011                   CLINTON            IL   LAW ENFORCEMENT

            WATER STILL ON ROADWAYS...BUT IMPROVING. ONLY ONE ROAD
            CLOSED NORTH OF CARLYLE...EAST OF ILLINOIS ROUTE 127.

&&

BYRD

Local storm report, Jun 18, 10:51 AM CDT, 2 hours 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1051 AM CDT SAT JUN 18 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1048 AM     FLASH FLOOD      SALEM                   38.63N  88.95W
06/18/2011                   MARION             IL   LAW ENFORCEMENT

            WATER RECEEDING IN SALEM...THOUGH COUNTY ROADS STILL
            FLOODED.

&&

BYRD

Local storm report, Jun 18, 1:04 PM CDT, 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
104 PM CDT SAT JUN 18 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1256 PM     FLOOD            VIRDEN                  39.50N  89.77W
06/18/2011                   MACOUPIN           IL   LAW ENFORCEMENT

            SEVERAL SECONDARY ROADS NEAR VIRDEN REMAIN FLOODED.

&&

BYRD

Local storm report, Jun 18, 1:06 PM CDT, 0 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
106 PM CDT SAT JUN 18 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1245 PM     HEAVY RAIN       COFFEEN                 39.09N  89.39W
06/18/2011  M3.50 INCH       MONTGOMERY         IL   TRAINED SPOTTER

            IN PAST 12 HOURS.

&&

BYRD

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 18, 3:12 AM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone, Callaway, Cole, Moniteau, Osage	63 min
Jun 18, 4:00 AM CDT	Severe Thunderstorm Warning	LSX	Audrain, Callaway, Cole, Gasconade, Montgomery, Osage	45 min
Jun 18, 4:30 AM CDT	Severe Thunderstorm Warning	LSX	Audrain, Callaway, Franklin, Gasconade, Lincoln, Montgomery and 4 more	60 min
Jun 18, 4:56 AM CDT	Tornado Warning	LSX	Lincoln, Montgomery, Saint Charles, Warren	49 min
Jun 18, 5:07 AM CDT	Tornado Warning	LSX	Lincoln, Montgomery, Pike	38 min
Jun 18, 5:10 AM CDT	Severe Thunderstorm Warning	LSX	Marion, Pike, Ralls	65 min
Jun 18, 5:18 AM CDT	Severe Thunderstorm Warning	LSX	Franklin, Jefferson, Lincoln, Pike, Saint Charles, Saint Louis and 2 more	57 min
Jun 18, 5:30 AM CDT	Tornado Warning	LSX	Lincoln, Pike, Saint Charles	19 min
Jun 18, 5:50 AM CDT	Areal Flood Advisory	LSX	Saint Charles, Saint Louis, City of Saint Louis	3 hr
Jun 18, 6:09 AM CDT	Severe Thunderstorm Warning	LSX	Saint Charles, Saint Louis	51 min
Jun 18, 7:28 AM CDT	Severe Thunderstorm Warning	LSX	Madison	16 min
Jun 18, 3:57 PM CDT	Flash Flood Watch	LSX	Audrain, Boone, Callaway, Cole, Crawford, Franklin and 17 more	15 hr
Jun 18, 12:30 AM CDT	Severe Thunderstorm Warning	LSX	Macoupin, Montgomery	45 min
Jun 18, 1:14 AM CDT	Flash Flood Warning	LSX	Macoupin, Montgomery	12 hr
Jun 18, 1:16 AM CDT	Severe Thunderstorm Warning	LSX	Macoupin, Montgomery	29 min
Jun 18, 2:51 AM CDT	Flash Flood Warning	LSX	Fayette, Montgomery	6 hr
Jun 18, 4:31 AM CDT	Flash Flood Warning	LSX	Bond, Fayette	6 hr
Jun 18, 5:01 AM CDT	Flash Flood Warning	LSX	Clinton, Marion	6 hr
Jun 18, 6:20 AM CDT	Severe Thunderstorm Warning	LSX	Clinton, Madison, Monroe, Randolph, Saint Clair, Washington	40 min
Jun 18, 6:21 AM CDT	Tornado Warning	LSX	Clinton, Monroe, Randolph, Saint Clair, Washington	39 min
Jun 18, 6:51 AM CDT	Severe Thunderstorm Warning	LSX	Bond, Clinton, Fayette, Madison, Marion, Randolph and 2 more	54 min
Jun 18, 7:24 AM CDT	Severe Thunderstorm Warning	LSX	Clinton, Marion	30 min
Jun 18, 4:49 PM CDT	River Flood Warning	LSX	Fayette	5 days
Jun 18, 5:01 PM CDT	Areal Flood Warning	LSX	Macoupin, Montgomery	23 hr

Nearby

Areal Flood Warnings in Illinois, 2011 Every areal flood warning in 2011

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.