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Severe weather analysis

Observations and analyses of the atmosphere now, from NWS, WPC and SPC. Not a forecast and not a warning: for those, see the Briefing and the Live tracker.

SPC soundings: feeds current

SPC soundings: Feed current; checked .

Checked means retrieved, not newly issued. Each graphic retains its issue, observation, initialization or valid time. Site publishing status is separate.

Soundings: what weather balloons measured

SPC’s skew-T diagram and hodograph of the sounding at Chanhassen, MN (MPX), 00Z. Its levels are in the table below.
Observed Sounding at Chanhassen, MN (MPX), for (5 h 6 min ago). SPC’s graphic; the values in its panels (CAPE, shear, the indices) are SPC’s computations from these levels. Data: NOAA/SPC.

A balloon launched about an hour before the time named, measuring as it rose and drifted with the wind: the atmosphere above one place, at one time. Model soundings, which are forecasts, are not shown here.

The levels this sounding was drawn from (35)
Chanhassen, MN (MPX): the surface first, then up through the atmosphere. Temperature and dew point in °C, as measured.
PressureHeightTemperatureDew pointWind
997 mb287 m10.6-2.4340° 4 kt
983 mb406 m9.6-6.4—
959 mb610 m7.6-7.2345° 13 kt
925 mb911 m4.6-8.4340° 16 kt
890 mb1219 m1.7-9.1345° 15 kt
857 mb1524 m-1.3-9.8340° 12 kt
850 mb1591 m-1.9-9.9340° 12 kt
825 mb1829 m-3.5-16.3355° 19 kt
810 mb1972 m-3.1-21.1—
794 mb2134 m-3.6-21.6015° 25 kt
775 mb2321 m-4.3-20.3—
764 mb2438 m-4.8-22.4020° 37 kt
741 mb2674 m-4.1-29.1—
729 mb2802 m-4.3-34.3—
707 mb3048 m-3.7-49.3345° 39 kt
700 mb3122 m-4.1-31.1340° 39 kt
689 mb3246 m-4.5-29.5—
654 mb3658 m-6.5-18.9350° 39 kt
634 mb3896 m-7.5-19.5—
609 mb4208 m-9.7-18.7—
592 mb4426 m-9.1-22.1—
581 mb4572 m-10.2-22.4350° 45 kt
558 mb4877 m-12.4-23.1355° 46 kt
536 mb5182 m-14.7-23.8000° 45 kt
522 mb5385 m-14.3-23.3—
502 mb5680 m-16.1-26.1—
500 mb5710 m-16.3-26.3000° 46 kt
475 mb6096 m-18.9-29.8350° 45 kt
458 mb6368 m-20.9-30.9—
437 mb6706 m-23.1-38.6355° 60 kt
420 mb7010 m-25.0-45.6000° 63 kt
408 mb7217 m-26.3-50.3—
400 mb7360 m-27.7-50.7005° 65 kt
386 mb7620 m-29.6—005° 66 kt
381 mb7708 m-30.3——
Every station with a sounding (78)

SPC observed soundings checked · Data: NOAA/SPC

District of Columbia briefing

Not an official warning service. Warnings and watches are the National Weather Service’s, outlooks and reports the Storm Prediction Center’s and the Weather Prediction Center’s (Data: NOAA/NWS, NOAA/SPC, NOAA/WPC). When a warning is issued for you, act on it, and use weather.gov or a NOAA Weather Radio for where you are.