Alert archive / Minnesota / Special Weather Statements in 2011
Special Weather Statement, NWS Twin Cities, MN
NWS Twin Cities, MN issued this special weather statement at Aug 6, 2011, 3:18 PM CDT for Washington County, Minnesota. It was in force for 27 min. 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
- Aug 6, 2011, 3:18 PM CDT (20:18 UTC)
- Expired
- Aug 6, 2011, 3:45 PM CDT
- In force
- 27 min
- Issued by
- NWS Twin Cities, MN
County Washington County, MN
The radar
The Minneapolis radar (KMPX), 60 km from the middle of the area, began a volume at 20:19 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 |
|---|---|---|---|
| Aug 6, 3:30 PM CDT | HAIL 0.25 | 4 Nne White Bear Lake, MN |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 8.3 hours before the alert went out and 63 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
- 690 J/kg
- Mixed-layer CIN
- -28 J/kg
- Mixed-layer LCL
- 750 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 51 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The text
As transmitted, in the capitals the NWS used until 2016.
789
WWUS83 KMPX 062018
SPSMPX
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
318 PM CDT SAT AUG 6 2011
MNZ062-063-WIZ023-062045-
RAMSEY-ST. CROIX-WASHINGTON-
318 PM CDT SAT AUG 6 2011
...THUNDERSTORMS MOVING OVER RAMSEY...WASHINGTON...AND ST. CROIX
COUNTIES THROUGH 345 PM CDT...
AT 316 PM CDT...WEATHER SERVICE RADAR WAS TRACKING STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM SHOREVIEW TO MARINE ON ST
CROIX. THESE STORMS WERE MOVING SOUTHEAST AT 25 MPH.
DIME SIZE DIAMETER HAIL AND WINDS UP TO 50 MPH ARE EXPECTED WITH
THESE STORMS. SOME OF THE WINDS MAY OCCUR BEFORE THE ACTUAL RAIN
ARRIVES.
* LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...
WHITE BEAR LAKE.
NORTH OAKS.
VADNAIS HEIGHTS.
GEM LAKE.
MAHTOMEDI.
STILLWATER.
OAK PARK HEIGHTS.
INTERSTATE 35 IN WASHINGTON COUNTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS THUNDERSTORM COULD INTENSIFY QUICKLY...SO BE READY TO ACT IF A
WARNING IS ISSUED.
&&
LAT...LON 4505 9262 4494 9272 4494 9297 4511 9314
4513 9308 4512 9303 4514 9302 4519 9284
4520 9274
TIME...MOT...LOC 2016Z 310DEG 21KT 4507 9312 4515 9283
$$The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 5, 10:55 PM CDT | Areal Flood Advisory | MPX | Kandiyohi, Meeker, Sherburne, Wright | 3 hr |
| Aug 6, 10:59 AM CDT | Areal Flood Advisory | MPX | Douglas, Mille Lacs, Morrison, Todd | 4 hr |
| Aug 6, 11:59 AM CDT | Special Weather Statement | MPX | Morrison | 61 min |
| Aug 6, 12:37 PM CDT | Severe Thunderstorm Warning | MPX | Benton, Isanti, Kanabec, Mille Lacs, Morrison | 53 min |
| Aug 6, 1:20 PM CDT | Severe Thunderstorm Warning | MPX | Chisago, Isanti, Kanabec | 31 min |
| Aug 6, 2:35 PM CDT | Special Weather Statement | MPX | Anoka | 25 min |
| Aug 6, 3:29 PM CDT | Severe Thunderstorm Warning | MPX | Ramsey, Washington | 46 min |
| Aug 6, 5:36 PM CDT | Special Weather Statement | MPX | Douglas | 24 min |
| Aug 6, 6:59 PM CDT | Special Weather Statement | MPX | Stearns | 46 min |
| Aug 6, 2:58 PM CDT | Special Weather Statement | MPX | Barron | 47 min |
| Aug 6, 4:00 PM CDT | Special Weather Statement | MPX | Saint Croix | 45 min |
| Aug 6, 5:26 PM CDT | Special Weather Statement | MPX | Eau Claire | 49 min |
Nearby
Special Weather Statements in Minnesota, 2011Every special weather statement 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.