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Upper Air Sounding Locations
Purpose: to locate stations “upstream” of Northern Alabama to determine the speed of approaching storms.
Upper Air Sounding Locations | At 360 Miles | At 720 Miles | At 1080 Miles | At 1440 Miles
February 3, 2009:
“A SECOND COLD FRONT IS PROGGED TO RACE TOWARDS THE TENNESSEE VALLEY TODAY.”
Perhaps check the SKEW-T text data for “upstream” locations to determine the speed of the storm? Today...Jefferson City, MO? Perhaps get a list of the WFOs that can be checked in anticipation of the arrival of a storm in this area.
On the SKEW-T image this morning, “STM: 322/23” which would indicate that the storm is moving on a trajectory of 322° at 23 knots.
State Capitals and Corresponding Weather Stations
Where there are more than one reporting city in a state, the city marked with an asterisk * is the one closest to the 360 / 720 / 1080 / 1440 line.
Wind Speed Converter, NWS
Close In - SKEW-T Charts for Nearby Locations
At 360 Miles - SKEW-T Charts for Nearby Locations
Springfield, IL
Jefferson City, MO
Little Rock, AR
Baton Rouge, LA
SKEW-T Sites:
At 720 Miles
St. Paul, MN
Des Moines, Ia
Lincoln, NE
Topeka, KS
Oklahoma City, OK
Austin, TX
SKEW-T Sites:
International Falls MN (INL-72747)
Minneapolis MN (MPX-72649)
Norman OK
(OUN-72357)
*Amarillo
TX (AMA-72363)
Brownsville TX (BRO-72250)
*Corpus
Christi TX (CRP-72251)
Del Rio TX
(DRT-72261)
El Paso TX
(EPZ-72364)
*Fort
Worth TX (FWD-72249)
At 1080 Miles
Bismarck ND
Pierre, SD
Cheyenne, WY
Denver, CO
Santa Fe, NM
SKEW-T Sites:
AT 1440 Miles
Helena, MT
Glasgow is in the NE quadrant of Montana, while Great Falls in the NW quadrant.
Boise, ID
Salt Lake City, UT
Phoenix, AZ
SKEW-T Sites:
From Unisys, Upper Air Soundings:
http://weather.unisys.com/upper_air/skew/index.html
This directory
contains vertical sounding plots from individual balloons. These are
plots of temperature, dewpoint and winds with height. The soundings
cover most of the available sites in the US and parts of southern
Canada. There is also a listing of sounding data (in text form)
including most major indices. These data update once every 12 hours at
around 10:45 EST.
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Knots to Miles Per Hour
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The conversion table below will provide a quick conversion for winds from calm to 99 knots. The converted values are all rounded to the nearest integer. For a more accurate conversion use the following formula: 1 KNOT = 1.15155 MILES PER HOUR |
| K T S |
0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| MPH | MPH | MPH | MPH | MPH | MPH | MPH | MPH | MPH | MPH | |
| 0 | 0 | 1 | 2 | 3 | 5 | 6 | 7 | 8 | 9 | 10 |
| 10 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 20 | 21 | 22 |
| 20 | 23 | 24 | 25 | 26 | 28 | 29 | 30 | 31 | 32 | 33 |
| 30 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 43 | 44 | 45 |
| 40 | 46 | 47 | 48 | 49 | 51 | 52 | 53 | 54 | 55 | 56 |
| 50 | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 66 | 67 | 68 |
| 60 | 69 | 70 | 71 | 72 | 74 | 75 | 76 | 77 | 78 | 79 |
| 70 | 81 | 82 | 83 | 84 | 85 | 86 | 87 | 89 | 90 | 91 |
| 80 | 92 | 93 | 94 | 96 | 97 | 98 | 99 | 100 | 101 | 102 |
| 90 | 104 | 105 | 106 | 107 | 108 | 109 | 110 | 112 | 113 | 114 |
Source: Wind Chart, National Climatic Data Center (NCDC), NESDIS, NOAA.
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