Alert archive / Wisconsin / Flash Flood Warnings in 2016

Flash Flood Warning 42, NWS La Crosse, WI

September 21, 2016Adams County, Wisconsin

NWS La Crosse, WI issued this flash flood warning at Sep 21, 2016, 6:58 PM CDT for Adams County, Wisconsin. It was in force for 4 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: Sep 21, 2016, 6:58 PM CDT (23:58 UTC)
Expired: Sep 21, 2016, 11:00 PM CDT
In force: 4 hr
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Flood severity: None

County Adams County, WI

The radar

The La Crosse radar (KARX), 111 km from the middle of the area, began a volume at 00:03 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

Time	Report	Where	Remark
Sep 21, 9:30 PM CDT	FLASH FLOOD	1 Wnw Big Spring, WI	WATER OVER COUNTY ROAD G.

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

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 12.0 hours before the alert went out and 159 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1384 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 106 m²/s²
0-3 km storm-relative helicity: 174 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

372 
WGUS53 KARX 212358
FFWARX
WIC001-220400-
/O.NEW.KARX.FF.W.0042.160921T2358Z-160922T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
658 PM CDT WED SEP 21 2016

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHERN ADAMS COUNTY IN CENTRAL WISCONSIN...

* UNTIL 1100 PM CDT

* AT 656 PM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED
  THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS THE WARNED AREA.
  RAINFALL AMOUNTS OVER THE PAST 4 HOURS HAVE BEEN 2 TO AS MUCH AS 5
  INCHES...WITH ANOTHER 1 TO 2 INCHES POSSIBLE THROUGH LATE
  EVENING. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  COUNTY ROADS B AND P...BIG SPRING...COUNTY ROADS B AND K...
  PLAINVILLE...BROOKSIDE...HIGHWAYS 82 AND 13...
  HOLIDAY SHORES CAMPGROUND...WHITE CREEK...THE TOWN OF QUINCY...
  COONS DEEP LAKE CAMPGROUND...K AND L CAMPGROUND...
  HIGHWAY 82 AND COUNTY B...HIGHWAY 23 AND COUNTY B AND 
  HIGHWAY 23 AND COUNTY G.

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.

&&

LAT...LON 4364 8979 4367 8979 4368 8981 4370 8982
      4377 8985 4382 8991 4384 8992 4386 8996
      4387 8996 4387 8960 4364 8960

$$

LAWRENCE

2 follow-up statements

997 
WGUS73 KARX 220133
FFSARX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
833 PM CDT WED SEP 21 2016

WIC001-220400-
/O.CON.KARX.FF.W.0042.000000T0000Z-160922T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ADAMS WI-
833 PM CDT WED SEP 21 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1100 PM CDT FOR
SOUTHERN ADAMS COUNTY...

AT 830 PM CDT...DOPPLER RADAR INDICATED CONTINUED THUNDERSTORMS
PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. BASED ON RADAR AND RAIN
GAGE REPORTS...2 TO 5 INCHES OF RAIN HAVE OCCURRED ACROSS SOUTHERN
ADAMS COUNTY...WITH AN ADDITIONAL 1 TO 2 INCHES POSSIBLE THROUGH 11
PM.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
COUNTY ROADS B AND P...BIG SPRING...COUNTY ROADS B AND K...
PLAINVILLE...BROOKSIDE...HIGHWAYS 82 AND 13...
HOLIDAY SHORES CAMPGROUND...WHITE CREEK...THE TOWN OF QUINCY...
COONS DEEP LAKE CAMPGROUND...AND AREAS NEAR HIGHWAYS G AND B.

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.

&&

LAT...LON 4364 8979 4367 8979 4368 8981 4370 8982
      4377 8985 4382 8991 4384 8992 4386 8996
      4387 8996 4387 8960 4364 8960

$$

LAWRENCE

559 
WGUS73 KARX 220357
FFSARX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
1057 PM CDT WED SEP 21 2016

WIC001-220403-
/O.EXP.KARX.FF.W.0042.000000T0000Z-160922T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ADAMS WI-
1057 PM CDT WED SEP 21 2016

...THE FLASH FLOOD WARNING FOR SOUTHERN ADAMS COUNTY WILL EXPIRE AT
1100 PM CDT...

THE HEAVY RAIN HAS ENDED AT THIS TIME. HOWEVER WATER REMAINS HIGH
ALONG SOME ROADS AND THIS AREA WILL HAVE TO MONITORED FOR ADDITIONAL
HEAVY RAIN TONIGHT.

LAT...LON 4364 8979 4367 8979 4368 8981 4370 8982
      4377 8985 4382 8991 4384 8992 4386 8996
      4387 8996 4387 8960 4364 8960

$$

JSB

The office that day

Everything else NWS La Crosse, WI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 20, 11:26 PM CDT	Special Weather Statement	ARX	Buffalo	109 min
Sep 21, 12:11 AM CDT	Special Weather Statement	ARX	Clark, Jackson, Trempealeau	109 min
Sep 21, 12:21 AM CDT	Severe Thunderstorm Warning	ARX	Jackson, Trempealeau	41 min
Sep 21, 1:25 AM CDT	Special Weather Statement	ARX	Adams, Buffalo, Clark, Jackson, Juneau, La Crosse and 3 more	110 min
Sep 21, 1:45 AM CDT	Severe Thunderstorm Warning	ARX	Adams	28 min
Sep 21, 2:23 AM CDT	Special Weather Statement	ARX	Crawford, La Crosse, Monroe, Richland, Vernon	67 min
Sep 21, 3:31 AM CDT	Special Weather Statement	ARX	Buffalo, Jackson, La Crosse, Trempealeau	119 min
Sep 21, 5:40 AM CDT	Flash Flood Warning	ARX	Buffalo, Trempealeau	3 hr
Sep 21, 6:44 AM CDT	Flash Flood Warning	ARX	Crawford, Vernon	6 hr
Sep 21, 8:26 AM CDT	Flash Flood Warning	ARX	Jackson, La Crosse, Monroe, Trempealeau	3 hr
Sep 21, 10:10 AM CDT	River Flood Warning	ARX	Jackson	3 days
Sep 21, 10:10 AM CDT	River Flood Warning	ARX	La Crosse, Trempealeau	6 days
Sep 21, 10:10 AM CDT	River Flood Warning	ARX	Buffalo, Trempealeau	4 days
Sep 21, 10:10 AM CDT	River Flood Warning	ARX	Buffalo, Trempealeau	7 days
Sep 21, 10:27 AM CDT	River Flood Warning	ARX	Richland, Vernon	4 days
Sep 21, 10:27 AM CDT	River Flood Warning	ARX	Vernon	5 days
Sep 21, 10:27 AM CDT	River Flood Warning	ARX	Crawford	5 days
Sep 21, 10:27 AM CDT	River Flood Warning	ARX	Crawford	7 days
Sep 21, 10:27 AM CDT	River Flood Warning	ARX	Crawford	8 days
Sep 21, 11:31 AM CDT	Flash Flood Warning	ARX	La Crosse, Monroe	3 hr
Sep 21, 12:55 PM CDT	Special Weather Statement	ARX	Trempealeau	50 min
Sep 21, 1:01 PM CDT	Special Weather Statement	ARX	Richland	44 min
Sep 21, 1:05 PM CDT	Special Weather Statement	ARX	Clark	55 min
Sep 21, 2:13 PM CDT	Flash Flood Warning	ARX	Clark	5 hr
Sep 21, 2:54 PM CDT	Special Weather Statement	ARX	Adams	21 min
Sep 21, 2:59 PM CDT	Special Weather Statement	ARX	Jackson	46 min
Sep 21, 4:43 PM CDT	River Flood Warning	ARX	Juneau	7 days
Sep 21, 5:33 PM CDT	Severe Thunderstorm Warning	ARX	Clark	42 min
Sep 21, 5:44 PM CDT	Special Weather Statement	ARX	Adams, Juneau	46 min
Sep 21, 5:57 PM CDT	Severe Thunderstorm Warning	ARX	Adams, Juneau, Monroe	48 min

Nearby

Flash Flood Warnings in Wisconsin, 2016 Every flash flood 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.