Alert archive / Minnesota / Areal Flood Advisories in 2011
Areal Flood Advisory 37, NWS Twin Cities, MN
NWS Twin Cities, MN issued this areal flood advisory at Jul 27, 2011, 5:24 AM CDT for 4 counties in Minnesota. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Jul 27, 2011, 5:24 AM CDT (10:24 UTC)
- Expired
- Jul 27, 2011, 9:00 AM CDT
- In force
- 4 hr
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
Counties Blue Earth County, MN, Faribault County, MN, Martin County, MN, Watonwan County, MN
The radar
The Minneapolis radar (KMPX), 126 km from the middle of the area, began a volume at 10:26 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
Minneapolis, MN (KMPX), launched 00:00Z, 10.4 hours before the alert went out and 125 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1713 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 43 m²/s²
- 0-3 km storm-relative helicity
- 98 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
What forecasters said that day
The local office's own words before this areal flood advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Twin Cities, MN wrote its last area forecast discussion before this areal flood advisory went out at Jul 27, 4:16 AM CDT, 1 hour 8 minutes earlier.
Area forecast discussion, Jul 27, 4:16 AM CDT, 1 hour 8 minutes before
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</html>Hazardous weather outlook, Jul 27, 1:06 AM CDT, 4 hours 18 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 106 AM CDT WED JUL 27 2011 MNZ041>045-047>070-073>078-082>085-091>093-WIZ014>016-023>028- 271100- DOUGLAS-TODD-MORRISON-MILLE LACS-KANABEC-STEVENS-POPE-STEARNS- BENTON-SHERBURNE-ISANTI-CHISAGO-LAC QUI PARLE-SWIFT-CHIPPEWA- KANDIYOHI-MEEKER-WRIGHT-HENNEPIN-ANOKA-RAMSEY-WASHINGTON- YELLOW MEDICINE-RENVILLE-MCLEOD-SIBLEY-CARVER-SCOTT-DAKOTA- REDWOOD-BROWN-NICOLLET-LE SUEUR-RICE-GOODHUE-WATONWAN-BLUE EARTH- WASECA-STEELE-MARTIN-FARIBAULT-FREEBORN-POLK-BARRON-RUSK- ST. CROIX-PIERCE-DUNN-PEPIN-EAU CLAIRE- 106 AM CDT WED JUL 27 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL AND SOUTHERN MINNESOTA... AND WEST CENTRAL WISCONSIN. .DAY ONE...OVERNIGHT SEVERE THUNDERSTORMS ARE STILL POSSIBLE OVER PORTIONS OF SOUTHERN AND CENTRAL MINNESOTA OVERNIGHT AS LOW PRESSURE MOVES TOWARD WESTERN MINNESOTA. STRONG WINDS WOULD BE THE MAIN SEVERE WEATHER THREAT. IN ADDITION...HEAVY RAIN IS LIKELY WITH THE STRONGER STORMS...WHICH COULD CAUSE FLOODING. AREAS UNDER THE GREATEST THREAT OF HEAVY RAIN WOULD BE PORTIONS OF CENTRAL MINNESOTA. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. THUNDERSTORMS WILL LINGER OVER PARTS OF SOUTH CENTRAL AND EAST CENTRAL MINNESOTA AND WEST CENTRAL WISCONSIN WEDNESDAY MORNING...WITH HEAVY RAIN STILL POSSIBLE. THERE IS A SLIGHT RISK FOR SEVERE WEATHER FROM SOUTH CENTRAL MINNESOTA INTO WEST CENTRAL WISCONSIN...MAINLY DURING THE AFTERNOON AND EVENING. THE NEXT THREAT FOR THUNDERSTORMS ACROSS THE OUTLOOK AREA WILL BE SUNDAY AND MONDAY. .SPOTTER INFORMATION STATEMENT... SKYWARN SPOTTER ACTIVATION MAY BE NEEDED.
In the hours before
Special weather statement, Jul 27, 2:22 AM CDT, 3 hours 2 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
222 AM CDT WED JUL 27 2011
MNZ044-045-052-053-061-WIZ014-270745-
ANOKA-CHISAGO-ISANTI-KANABEC-MILLE LACS-POLK-
222 AM CDT WED JUL 27 2011
...HEAVY RAIN DEVELOPING OVER ANOKA...CHISAGO...ISANTI...KANABEC...
MILLE LACS AND POLK COUNTIES THROUGH 245 AM CDT...
AT 217 AM CDT...WEATHER SERVICE RADAR WAS TRACKING STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM 4 MILES NORTH OF ISLE TO
LEWIS LAKE TO 3 MILES NORTHEAST OF EAST BETHEL. THESE STORMS WERE
MOVING EAST AT 30 MPH.
WINDS UP TO 50 MPH ARE EXPECTED WITH THESE STORMS.
* LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...
BODUM.
WARMAN.
WYOMING.
QUAMBA.
HARRIS.
LAT...LON 4616 9342 4615 9304 4598 9304 4597 9313
4574 9314 4573 9287 4565 9287 4565 9284
4537 9275 4528 9329 4577 9349 4626 9359
4626 9344
TIME...MOT...LOC 0721Z 262DEG 25KT 4621 9341 4578 9335
4536 9311Local storm report, Jul 27, 2:41 AM CDT, 2 hours 43 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
241 AM CDT WED JUL 27 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0239 AM HAIL ST FRANCIS 45.38N 93.36W
07/27/2011 M0.75 INCH ANOKA MN TRAINED SPOTTER
&&
AZSpecial weather statement, Jul 27, 3:16 AM CDT, 2 hours 8 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
316 AM CDT WED JUL 27 2011
MNZ073>075-083-270915-
BLUE EARTH-BROWN-NICOLLET-REDWOOD-
316 AM CDT WED JUL 27 2011
...THUNDERSTORMS MOVING OVER BLUE EARTH...BROWN...NICOLLET AND
REDWOOD COUNTIES THROUGH 415 AM CDT...
AT 312 AM CDT...WEATHER SERVICE RADAR WAS TRACKING A CLUSTER OF
STRONG THUNDERSTORM NEAR SPRINGFIELD. THESE STORMS WERE MOVING EAST
AT 35 MPH.
ONE HALF INCH DIAMETER HAIL...WINDS UP TO 40 MPH...AND HEAVY
DOWNPOURS ARE EXPECTED WITH THESE STORMS.
* LOCATIONS IN OR NEAR THE PATH OF THES STORMS INCLUDE...
SPRINGFIELD.
MORGAN.
COBDEN.
EVAN.
SLEEPY EYE.
NEW ULM.
LAT...LON 4441 9514 4446 9432 4445 9427 4415 9432
4414 9511
TIME...MOT...LOC 0814Z 256DEG 31KT 4427 9498Special weather statement, Jul 27, 3:49 AM CDT, 1 hour 35 minutes before
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</html>The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 26, 8:56 PM CDT | Special Weather Statement | MPX | Douglas, Stevens | 64 min |
| Jul 26, 9:36 PM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Lac qui Parle, Pope, Stevens, Swift | 54 min |
| Jul 26, 10:26 PM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Douglas, Lac qui Parle, Pope, Stevens, Swift | 79 min |
| Jul 26, 11:59 PM CDT | Severe Thunderstorm Warning | MPX | Kandiyohi, Pope, Stearns, Swift | 61 min |
| Jul 27, 12:04 AM CDT | Flash Flood Watch | MPX | Anoka, Benton, Carver, Chippewa, Chisago, Dakota and 20 more | 9 hr |
| Jul 27, 2:22 AM CDT | Special Weather Statement | MPX | Chisago, Isanti, Kanabec | 23 min |
| Jul 27, 3:16 AM CDT | Special Weather Statement | MPX | Brown | 59 min |
| Jul 27, 3:49 AM CDT | Special Weather Statement | MPX | Brown, McLeod, Nicollet, Sibley | 56 min |
Nearby
Areal Flood Advisories in Minnesota, 2011Every areal flood advisory 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.